Cold rolled steel is made using hot rolled steel through pickling, cold rolling and heat treatment. It is relatively thin with a thickness of 0.2 mm to 2.0 mm. Cold rolled steel is highly aesthetic and easily machinable, thus widely used for premium applications in modern society. We are increasingly focused on offering value-added products as demand for highly functional, cold rolled products is rising.
We operate two plants in Pohang and four in Gwangyang to produce cold rolled steel. Cold rolled steel¡¯s applications range from home appliances including motor vehicles, washing machines and fridges to industrial and architectural uses. In addition, as new applications for this steel emerge, including steel cans and steel houses, we focus on delivering products of greater added value and expanding their applications.
Mild Steel
Mild Steel
Mild Steel has a low carbon content and is relatively soft, having a tensile strength of no greater than 340 MPa. Its good elongation and great formability make the steel popular for many applications ranging from regular to sophisticated machining.Its most common application is automotive parts.
Key Specifications
?Cold-rolled Commercial Quality grade steels are manufactured as low-carbon steels and have tensile strength of more than 270MPa. They are most widely used for automotive inner parts for general drawing processing. Products are CR, EG, GI and GA.
ApplicationsMechanical Properties
Automotive parts that require regular machiningGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | ~343 | 270~ | 33~ |
GI/GA | ~294 | 274~ | 34~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
Cold-rolled drawing quality steel is manufactured as ultra-low carbon steel(Continous annealing process), has tensile strength of more than 270MPa, and is used for inner parts and outer parts of automotive parts for general drawing processing. Products are CR, EG, GI and GA.
ApplicationsInner motor vehicle parts that require higher formability than CQ
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | ~345 | 270~ | 33~ |
GI/GA | ~200 | 270~ | 36~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
Cold-rolled Deep Drawing Quality steel is manufactured as ultra-low carbon steel(Continous annealing process), has tensile strength of more than 270MPa and elongation of more than 36%. It is used for inner parts and outer parts of automotive parts for deep drawing processing. In particular, strict surface quality is maintained for the application of outer parts. Products are CR, EG, GI and GA.
ApplicationsInner and outer motor vehicle parts including the rear floor that require high formability
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | ~294 | 270~ | 36~ |
GI/GA | ~188 | 274~ | 38~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
Cold-rolled Extra Deep Drawing Quality steel is manufactured as ultra low carbon steel, has tensile strength of more than 260MPa and elongation of more than 44%. In particular, strict surface quality is maintained for the application of outer parts. Products are CR, EG, GI and GA.
ApplicationsOuter auto parts such as doors and fenders that require high formability and surface quality
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | ~294 | 265~ | 44~ |
GI/GA | ~170 | 270~380 | 44~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
Cold-rolled Super-EDDQ steel is manufactured as ultra-low carbon steel, has a tensile strength of more than 260MPa and elongation of more than 47%. And it is used for automotive outer parts for ultra deep drawing processing. In particular, strict surface quality is maintained for the application of outer parts. Products are CR, EG, GI and GA.
ApplicationsOuter auto parts such as side outers that require higher formability and surface quality than EDDQ
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | ~294 | 260~ | 47~ |
GI/GA | ~167 | 265~ | 48~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
Featuring deep drawing and high strength, high strength steel can be classified into bake-hardening steel, solid-solution strengthening and precipitation hardening steel. It also has many variants: BH (bake-hardenable) steel, HSLA (high strength low alloy), R (rephosphorized) steel, IF (interstitial free) HSS, ATOS (AuTOmobile structural) steel and HB(Hyper Burring) steel.
Key Specifications
?BH (bake-hardenable) steel is made by adding interstitial elements to extra low carbon steel and applying hardening process for a higher yield strength. Bake-hardenable steel is easy to form during the early stage of forming and sees an increased yield strength of 30 MPa in the bake hardening effect as the process unfolds. Since it has a higher dent resistance than commercial quality steel, it maintains good dent resistance even after its thickness is reduced.
180YB provides a yield strength of over 180 MPa, which can be increased to over 210 MPa after the bake. This steel is extensively used for motor vehicles¡¯ outer panels that require high dent resistance and formability, such as hoods and door outers. Products include CR, EG, GI and GA.
ApplicationsOuter auto parts that require high dent resistance and formability, such as hoods, doors and fenders
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
BH, MPa Spec. |
---|---|---|---|---|---|
YS | CR/EG | 180~240 | 270~ | 40~ | 30~ |
GI/GA | 180~240 | 270~ | 40~ | 30~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
210YB is ideal for applications that require a higher strength than 180YB. 210YB provides a yield strength of over 210 MPa, which can be increased to over 240 MPa after the bake. It is widely used for outer auto parts, and its surface quality is strictly controlled. Products include CR, EG, GI and GA
ApplicationsOuter auto parts such as hoods, doors, fenders, etc. that require higher dent resistance than 180YB
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
BH, MPa Spec. |
---|---|---|---|---|---|
YS | CR/EG | 210~270 | 240~ | 38~ | 30~ |
GI/GA | 210~270 | 240~ | 38~ | 30~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
240YB provides a yield strength of over 240 MPa, which can be increased to over 270 MPa after the bake. It is widely used for outer auto parts, and its surface quality is strictly controlled. Products include CR, EG, GI and GA.
ApplicationsOuter auto parts such as trunks, hoods, doors, fenders, etc. that require higher dent resistance than 210YB
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
BH, MPa Spec. |
---|---|---|---|---|---|
YS | CR/EG | 240~300 | 340~450 | 36~ | 30~ |
GI/GA | 240~300 | 340~450 | 36~ | 30~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
270YB provides a yield strength of over 270 MPa, which can be increased to over 300 MPa after the bake. It is classified as high strength steel with a tensile strength of over 390 MPa. Its sub-categories include CR, EG, GI and GA.
ApplicationsInner and outer auto parts such as trunks, hoods, doors, etc. that require high strength and dent resistance
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
BH, MPa Spec. |
---|---|---|---|---|---|
YS | GI/GA | 250~330 | 390~ | 35~ | 30~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
High strength low alloy (HSLA) is made by adding precipitation enhancing elements (i.e., Ti, Nb) to low carbon steel to disperse carbonized precipitation into fine grains. Common elements contained in the precipitation that are created during this process include NbC, TiC, VC and AIN. These elements interrupt dislocation motion, improving strength and impact toughness. The smaller the precipitation, the higher the strength becomes. Affordability coupled with high strength makes the steel popular as reinforcement for impact toughness in motor vehicles.
220YC provides a yield strength of over 220 MPa. Its most common application is automotive reinforcement that require high strength, and its sub-categories include CR, EG, GI and GA.
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR | 220~330 | 340~450 | 28~ |
GI/GA | 220~340 | 340~450 | 28~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
260YC provides a yield strength of over 260 MPa. Its most common application is automotive reinforcement that requires a higher yield strength than 210YC, and its sub-categories include CR, EG, GI and GA.
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR | 260~340 | 350~430 | 28~ |
GI/GA | 260~340 | 350~430 | 28~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
300YC provides a yield strength of over 300 MPa. Its most common application is automotive reinforcement that requires a higher yield strength than 260YC, and its sub-categories include CR, EG, GI and GA.
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR | 300~380 | 380~480 | 22~ |
GI/GA | 300~380 | 380~480 | 22~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
340YC provides a yield strength of over 340 MPa. Its most common application is automotive reinforcement that requires a high tensile strength of over 410 MPa, and its sub-categories include CR, EG, GI and GA
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR | 340~440 | 410~530 | 18~ |
GI/GA | 340~440 | 410~530 | 20~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
380YC provides a yield strength of over 380 MPa. Its most common application is automotive reinforcement that requires a high tensile strength of over 460 MPa, and its sub-categories include CR, EG, GI and GA.
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR | 380~500 | 460~600 | 18~ |
GI/GA | 380~500 | 460~600 | 18~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | 42
420YC provides a yield strength of over 420 MPa. Its most common application is automotive reinforcement that requires a high tensile strength of over 490 MPa, and its sub-categories include CR, EG, GI and GA.
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR | 420~530 | 490~600 | 16~ |
GI/GA | 420~530 | 490~600 | 16~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
440YC provides a tensile strength of over 440 MPa. It is made by increasing the content of precipitation enhancing elements to meet the need for higher strength to achieve reduced weight in motor vehicles. Its most common application is automotive reinforcement that requires high strength, and its sub-categories include CR, EG, GI and GA.
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR/EG | 300~ | 440~ | 25~ |
GI/GA | - | - | - |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
With over 590 MPa, 590C has the highest tensile strength of all HSLAs. Its most common application is automotive reinforcement that requires high strength, and its sub-categories include CR, GI and GA.
ApplicationsAutomotive reinforcement that is exposed or requires high strength, such as side sills and center members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR/EG | 353~ | 588~ | 17~ |
GI/GA | - | - | - |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
Made by adding substitutional alloy elements such as P and Mn to low carbon steel. Such substitutional elements can cause grid deformation and increase internal stress, which disrupts dislocation motion and thus improves strength. In general, substitutional elements have less strength enhancing effect than interstitial atoms.
340R provides a tensile strength of over 340 MPa. Products include CR, EG, GI and GA.
ApplicationsInner automotive parts that require high strength, including cowls, wheel aprons and side front members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 187~ | 340~ | 32~ |
GI/GA | 186~330 | 440~ | 35~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
390R provides a tensile strength of over 390 MPa. Products include CR, EG, GI and GA.
ApplicationsInner automotive parts that require high strength, including cowls, wheel aprons and side front members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 236~ | 390~ | 29~ |
GI/GA | 195~ | 390~500 | 27~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
440R provides a tensile strength of 440 MPa, the highest of all cold rolled R-Class (rephosphorized) steels. Products include CR, EG, GI and GA.
ApplicationsInner automotive parts that require high strength, including cowls, wheel aprons and side front members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 275~ | 440~ | 25~ |
GI/GA | 235~ | 440~ | 26~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
This steel is intended for customers that require higher strength to achieve reduced weight for their motor vehicles. The steel¡¯s deep drawing can be achieved by adding Ti, the oxi-nitrocarburizing element, to ultra-low carbon steel while its high strength can be achieved by substitutional elements such as P and Mn to ultra-low carbon steel. B is added to minimize grain embrittlement that might be caused by segregation P.
180Y-XR (eXtra R) is intended for applications that require higher formability than 180YE. Its yield strength is over 180 MPa and elongation is over 42 percent. 180Y-XR features a very low level of interstitial elements {111} and increased density to increase insulation performance (R-value). With the highest elongation of all IF HSS steels, it can be used for parts that require high strength and deep drawability. Products include CR and GA.
ApplicationsOuter auto parts that require high formability, such as side outers
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR/EG | 180~ | 320~ | 42~ |
GI/GA | 180~ | 320~ | 42~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - |
180YE provides a yield strength of over 180 MPa and elongation of over 34%. It is widely used for parts that require high strength and deep drawability. Those intended for the exterior, in particular, are subject to strict quality assurance practices. Products include CR, EG, GI and GA.
ApplicationsInner and outer auto parts that require high formability, such as doors, fenders and floors
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR/EG | 180~240 | 340~ | 34~ |
GI/GA | 180~240 | 340 | 34~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
220YE provides a yield strength of over 220 MPa and elongation of over 32 percent. It is widely used for parts that require high strength and deep drawability. Those intended for the exterior, in particular, are subject to strict quality assurance practices. Products include CR, EG, GI and GA.
ApplicationsInner and outer auto parts that require high formability, such as doors, fenders and floors
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR/EG | 220~260 | 340~ | 32~ |
GI/GA | 220~260~ | 340~ | 32~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
260YE provides a yield strength of over 260 MPa and a tensile strength of over 390 MPa. Its most common application is automotive parts that require high strength, and its sub-categories include CR, EG, GI and GA.
ApplicationsInner and outer auto parts that require high formability and high strength, such as doors, fenders and floors
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR/EG | 260~ | 390~500 | 27~ |
GI/GA | 260~ | 390~500 | 27~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
300YE provides a yield strength of over 300 MPa and a tensile strength of over 380 MPa. Its most common application is automotive parts that require a higher yield strength than 260YE, and its sub-categories include CR, EG, GI and GA.
ApplicationsInner and outer auto parts that require high formability and high strength, such as doors, fenders and floors
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
YS | CR/EG | 300~360 | 360~480 | 22~ |
GI/GA | 300~360 | 360~480 | 22~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
340E provides a tensile strength of over 340 MPa and elongation of over 32 percent. Its most common application is automotive parts that require high strength and deep drawability, and its sub-categories include CR, EG, GI and GA.
ApplicationsInner and outer auto parts that require high formability, such as side outers, doors, fenders and floors
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 167~ | 340~ | 32~ |
GI/GA | 167~ | 340~ | 32~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
340ES provides a tensile strength of over 340 MPa and elongation of over 35 percent. With better elongation than 340E, it is extensively used for parts of the sophisticated shape. In particular, the steel used for outer parts is subject to strict quality assurance practices, and its sub-categories include CR, EG, GI and GA
ApplicationsOuter auto parts that require higher formability than 340E, such as side outers and fenders
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 180~ | 340~ | 35~ |
GI/GA | 180~ | 340~ | 35~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
390E provides a tensile strength of over 390 MPa and elongation of over 27 percent. Its most common application is automotive parts that require high strength and deep drawability, and its sub-categories include CR, EG, GI and GA.
ApplicationsInner and outer auto parts that require high strength and high formability, including members, floors and reinforced A-pillar outers
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 206~ | 390~ | 27~ |
GI/GA | 206~ | 390~ | 27~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
440E provides a tensile strength of over 440 MPa and elongation of over 27 percent. It has the highest strength of all IF HSSs, thus ideal for automotive parts that require high strength, and its sub-categories include CR, EG, GI and GA.
ApplicationsInner and outer auto parts that require high strength and high formability, including members, floors, reinforced A-pillar outers and reinforced floor side rear uppers
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 245~ | 440~ | 27~ |
GI/GA | 245~ | 440~ | 27~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
Advanced High Strength Steel is metallurgically classified as transformation toughened steel using low-temperature transformation structure. Its variants include DP (Dual Phase) steel, TRIP (TRansformation Induced Plasticity) steel, XF (eXtra Formable) steel, TWIP (TWinning Induced Plasticity) steel, CP (Complex Phase) steel, Mart (Martensitic) Steel and FB (Ferrite and Bainite) steel. Among the variants, those with a tensile strength of over 1 GPa are referred to as Giga Steel.
Key Specifications
?Dual phase (DP) steel is intended for those requiring ultra-high strength steel sheets to reduce body weight in their cars. It consists of a ferrite matrix and martensite having phase 2 structure. Featuring a low yield ratio of 0.5 to 0.6, DP steel is easy to work on and has the second highest elongation after TRIP steel. It also has good bake hardening since it is cooled quickly after being heated in an annealing furnace and goes through an overaging section at a temperature lower than Ms (to avoid hardening).
490DP provides a tensile strength of over 490 MPa, thus ideal for auto structural parts that require high strength. It also suffers no strain aging because it is rigid, with a yield strength of over 270 MPa. Thanks to these properties and the tendency towards weight reduction, the steel is increasingly used for outer auto parts. Those intended for the exterior, in particular, are subject to strict quality assurance practices. Products include CR, EG, GI and GA.
ApplicationsAutomotive structures that require high strength, such as sill side members and reinforcement roof side outers, and inner and outer parts that require dent resistance, including doors
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 270~380 | 490~ | 28~ |
GI/GA | 270~380 | 490~ | 28~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
590DP provides a tensile strength of over 590 MPa, thus ideal for auto structural parts that require high strength. With the recent tendency towards lightweight cars, we seek ways to apply 590DP having a higher yield strength than 490DP to outer parts. Those intended for the exterior, in particular, are subject to strict quality assurance practices. Products include CR, EG, GI and GA.
ApplicationsAutomotive structures that require high strength, such as sill side members and reinforcement roof side outers; impact members that require impact toughness, such as side sill side panels and underbody reinforcement parts; and outer parts that require dent resistance, such as doors
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | ~450 | 590~ | 24~ |
GI/GA | ~450 | 590~ | 24~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
780DP has a tensile strength of over 780 MPa and is commonly used for auto structural parts that require high strength. Its sub-categories include CR, GI and GA.
ApplicationsAutomotive structures that require high strength, such as sill side members and reinforcement roof side outers; impact members that require impact toughness, such as side sill panels and underbody reinforcement parts
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | ~625 | 780~ | 14~ |
GI/GA | 400~625 | 780~ | 16~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
980DP has a tensile strength of over 980 MPa, the highest of all cold rolled DP steels. POSCO 980DP is available in three types depending on customer needs: 980DP-H, 980DP-M and 980DP-EL. 980DP-H has high YR (YS/TS) and features a good HER and bending properties. 980DP-M is intended to provide improved welding properties while 980DP-EL is designed to provide higher formability. Products include CR, GI and GA.
ApplicationsGrade | Guaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|---|
980D-M | TS | CR/GI/GA | 580~750 | 980~ | 9~ |
980D-H | TS | CR/GI/GA | 650~900 | 980~ | 8~ |
980D-EL | TS | CR/GI/GA | 580~760 | 980~ | 10~ |
Grade | Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|---|
980D-M | - | |||
980D-H | - | |||
980D-EL | - | - | - |
It is a type of steel designed to provide ultra-high strength and high formability for customers to reduce the weight of their car bodies. It is basically a dual phase alloy consisting of the ferritic matrix, bainite and residual austenite. It often contains a small amount of martensite. With a yield ratio of 0.57 to 0.67, TRIP steel has good formability (elongation), thus ideal for parts that require high formability. High strength TRIP steel is hardly applicable to galvanized steel. This is because it contains Si and other elements that work against plating.
590TRIP provides a tensile strength of over 590 MPa. It features higher elongation than HSLA and DP steels having a tensile strength of 590 MPa. Its products include CR, EG and GA.
ApplicationsStructural parts of motor vehicles that require high strength and high formability, such as floor side panels
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 350~ | 590~ | 30~ |
GI/GA | 380~480 | 590~ | 27~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
690TRIP provides a tensile strength of over 690 MPa and elongation of over 21 percent.
ApplicationsStructural parts of motor vehicles that require high strength and high formability, such as members, reinforcement tunnels and tunnel hinges
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | GI/GA | 350~ | 690~ | 26~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - | - |
780TRIP provides a tensile strength of over 780 MPa and elongation of over 14 percent. They conform to VDA 239-100 CR450Y780T standards.
ApplicationsStructural parts of motor vehicles that require high strength and high formability for lightweight purposes, such as members, reinforcement tunnels and tunnel hinges
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR | ~640 | 780~ | 14~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - |
980TRIP provides a tensile strength of over 980 MPa and elongation of over 21 percent. The steel can be made into sophisticated forms using a cold rolling press. It is intended to take the place of parts that use steel sheets having a tensile strength of 590 MPa. Bainite is properly distributed to provide higher elongation and HER. In addition, carbon and phosphorous content are minimal to improve weldability. Products include CR and GA.
ApplicationsStructural parts of motor vehicles that require high strength and high formability for lightweight purposes, such as roof side rails, A/B pillar lowers, pillar hinges and side members
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 600~ | 980~ | 21~ |
GA | 550~ | 980~ | 17~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - |
1180TRIP provides a tensile strength of over 1180 MPa and elongation of over 14 percent. This steel is intended to take the place of steel made through high-temperature press forming. It has the highest strength of all TRIP steels. Its products include CR, EG and GA.
ApplicationsStructural parts of motor vehicles that require high strength and high formability for lightweight purposes, such as center pillar uppers, front pillar lowers and seat belts
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/EG | 850~ | 1180~ | 14~ |
GI/GA | 850~ | 1180~ | 14~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
It is a type of steel designed to provide ultra-high strength and high formability for customers to reduce the weight of their car bodies. Its tensile strength multiplied by elongation is over 25,000 MPa%. POSCO offers 980PosM_XF, a CR steel of 980 MPa grade. The process to make PosM_XF involves heat treatment at a temperature range where dual phases of ferrite and austenite exist and quick cooling to a tempering temperature. This allows ferrite, martensite and residual austenite to exist at room temperatures. Its fine crystal grains allow the steel to have high yield strength. The existence of residual austenite plays an important role in achieving an elongation of over 25%.
ApplicationsStructural parts of motor vehicles that require high strength and high formability for lightweight purposes, such as front pillar uppers
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR | 600~ | 980~ | 25~ |
As a single-phase austenitic steel featuring high carbon and high manganese, this steel experiences deformation twin upon machining, showing improved strain hardening ratio, strength and elongation. Photos of its microstructure taken during tensile testing provide proof of deformation twin. The greater the degree of deformation, the more twins occur.
950TWIP steel has a tensile strength of over 950 MPa and elongation of over 45 percent as well as better strain hardening than commercial steel. It can be used for parts that require high energy absorption upon impact.
ApplicationsImpact related parts of motor vehicles that are designed to absorb energy upon impact, such as bumper beams, and automotive parts that require high formability into sophisticated shapes, such as subframes
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR | 450 | 950~ | 45~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
This steel is intended for customers who require ultra-high strength steel for better vehicle safety. It contains ferrite, bainite, martensite as well as Ti or Nb precipitation. CP steel features single phase (or dual phase) rolling where it is heated and then cooled slowly. Consisting mainly of bainite and martensite, the steel has a high yield ratio and good bending workability.
980CP provides a yield strength of over 800 MPa and a tensile strength of over 980 MPa. It is intended to provide high YR (YS/TS) is widely used for automotive parts that require good impact protection.
ApplicationsStructural parts of motor vehicles that require high impact safety, such as sill side panels and underbody reinforcement parts
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR/GI | 800~ | 980~ | 5~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - |
1180CP provides a yield strength of over 850 MPa and a tensile strength of over 1180 MPa. High yield strength coupled with improved bending workability means that the steel is ideal for form and roll forming. Products include CR, GI and GA.
ApplicationsStructural parts of motor vehicles that require high impact safety, such as sill side panels
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR | 850~ | 1180~ | 6~ |
GI/GA | 825~ | 1180~ | 5~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- |
1180CP-HE steel has higher elongation than 1180CP. It is made by adding residual austenite to CP steel containing the matrix of ferrite, bainite and martensite for higher elongation through TRIP effect.
ApplicationsStructural parts of motor vehicles that require high impact safety, such as sill side panels
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR | 850~ | 1180~ | 8~ |
GA | 800~ | 1180~ | 8~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - |
This steel consists of martensite matrix and a small amount of bainite or ferrite. It has the highest tensile strength of all carbon steels, but very low ductility. Quick cooling and then appropriate tempering can improve the steel¡¯s yield strength.
1300MART provides a tensile strength of over 1,300 MPa and a yield strength of 1,000 MPa. With high strength and low ductility, it is used for parts that require roll forming. It can also be used for members to prevent deformation of the car body upon impact. Its products include CR and GI.
ApplicationsImpact members of motor vehicles that require high impact toughness, such as side sill outers and bumper beams
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR | 1,000~ | 1,300~ | 4~ |
GI | 1,000~ | 1,300~ | 4~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - |
1470MART provides a tensile strength of over 1,470 MPa and a yield strength of 1,050 MPa. It contains more alloy elements than 1300MART for higher impact safety. It can be used for impact members that prevent deformation of the car body upon impact. Products include CR and GI.
ApplicationsImpact members of motor vehicles that require high impact toughness, such as side sill outers and bumper beams
Mechanical PropertiesGuaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
TS | CR | 1,050~ | 1,470~ | 5~ |
GI | 1,050~ | 1,470~ | 5~ |
Uncoated | Electrogalvanized | Galvanized | Galvannealed |
---|---|---|---|
- | - |
Post Heat Treatment Steel allows you to define heating/cooling conditions before or after the processing of steel. Its types include HPF (Hot Press Forming) steel, Autobeam and Stab (Stabilizer).
* Autobeam and Stab are registered product names.
Key Products
HPF
HPF (hot press forming) process is also called hot stamping, press hardening or die quenching. This process involves forming using steel sheets and a press. Sheets at a high temperature are highly ductile, thus ideal for sophisticated shaped. A sheet heated during forming is cooled quickly within a mold. This allows the steel to have very high strength.
Unlike regular HPF that contains boron to increase strain hardening of steel sheets, POSCO¡¯s cold rolled 1470HPF contains manganese and no chromium. In boron-added steel, boron remains in the form of the bake to maximize quenching. To do this, it is imperative to precipitate N into TiN in the steel. In contrast, POSCO adds N to make the steel remain as bake and increase its yield strength during the baking process after painting. Products include CR and Al-Si.
ApplicationsBodies in white of motor vehicles that require highly strong reinforcement, such as A/B pillars and roof cross members
Mechanical PropertiesBefore heat treatment
Guaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
Composition | CR/AlSi | 350~550 | 500~750 | 16~ |
After heat treatment
Guaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
Composition | CR/AlSi | 1,000~ | 1,470~ | 5~ |
Uncoated | AlSi coated |
---|---|
2000HPF has more alloy elements than cold rolled 1470HPF steel to maximize yield strength and tensile strength after heat treatment. It has the highest strength of all steels.
ApplicationsBodies in white of motor vehicles that require highly strong reinforcement, such as A/B pillars and roof cross members
Mechanical PropertiesBefore heat treatment
Guaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
Composition | CR/AlSi | 300~ | 500~ | 11~ |
After heat treatment
Guaranteed Value |
Class | 0.2%YS, MPa Spec. |
TS, MPa Spec. |
El., % Spec. |
---|---|---|---|---|
Composition | CR/AlSi | 1,200~ | 1,800~ | 4~ |
Uncoated | AlSi coated |
---|---|
After plating, customers use our black plates to make diverse containers such as cans for food and powdered milk, industrial tubes, 2 piece cans, tuna cans, easy open ends and butane gas cans. tuna cans, easy open ends and butane gas cans.
Key Specifications
?This cold rolled steel is ideal for the application of enamel to improve heat resistance, abrasion resistance, chemical resistance, surface gloss and/or other attributes. After the application of enamel, the steel has a higher strength, greater resistance to heat and abrasion and unique aesthetic surface features. For this reason, it is used extensively for inner and outer panels of home appliances, building walls, kitchen appliances, bathtubs and many other applications.
Key Specifications
?Installations running on fossil fuels, such as generators at thermal power plants and boilers, are susceptible to corrosion caused by sulfur oxides (SOx) contained in the exhaust gas. Sulfuric Acid Resistant Steel steel features a good resistance to corrosion that makes it ideal for applications where sulfuric acid is abundant, such as desulfurizing systems and smoke vents. This can help you save on maintenance costs and better respond to tightening environmental regulations.
Key Specifications
?This steel is only made by cold-rolling hot rolled steel. It has a very high strength and hardness, but low flexibility. Its typical applications include bands for packaging and post-processing after galvanizing.
Key Specifications
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