Electrical galvanized steel is made by plating steel with zinc in an electrochemical manner. Plating uses pure zinc or zinc and nickel.
This product specification is subject to change, so please check the latest specifications when ordering or consult with the person in charge.
KS Specifications - Chemical Composition
Category | POSCO | |||
---|---|---|---|---|
Pure-Zn | Zn-Ni | Bend Test | ||
Bend Angle | Radius of Flexure | |||
Class 1 | EGSC | ENSC | 180¡Æ | Completely contact |
Class 2 | EGSP | ENSD | ||
Class 3 | EGSD | ENSP | ||
EGSN | ENSN | |||
EGSE | ENSE | |||
Structural Quality* | EG37 | EN37 | 2.0 times the sheet thickness | |
High Tensile Steel* | EGCHSP60TR | ENCHSP60TR | 1.0 time the sheet thickness | |
EGCHSP35R | ENCHSP35R | Completely contactc | ||
EGCHSP40R | ENCHSP40R | |||
EGCHSP35E | ENCHSP35E | |||
EGCHSP38E | - |
POSCO | Corresponding Dimensions | ||||
---|---|---|---|---|---|
Category | Remarks | JIS/KS | ASTM | ||
YP(MPa) | TS(MPa) | EL(%) | |||
- | 270~ | 37~ | Shallow drawing quality | SECC | A591-CQ |
- | 270~ | 28~ | Drawing | SECD | A591-DQ |
- | 270~ | 40~ | Deep drawing | - | - |
- | 270~ | 40~ | Non-aging deep drawing | SECE(N) | A591-DQSK |
- | 270 | 46 | Non-aging extra deep drawing | - | - |
(270) | 360~ | 20~ | Structural quality (37 kg grade) | - | - |
350~ | 590~ | 17~ | Commercial quality (60 kg grade) | - | - |
180~ | 340~ | 34~ | Drawing quality (35 kg grade) | - | - |
220~ | 390~ | 31~ | Drawing quality (40 kg grade) | - | - |
160~ | 340~ | 34~ | Deep drawing quality (35 kg grade) | - | - |
200~ | 370~ | 33~ | Deep drawing quality (38 kg grade) | - | - |
KS & JIS Specifications
Two types of zinc coating weights?the same weight on both sides and differentiated weights on each side?are applied to the steel sheets and steel coils. The standard and minimum Zn coating weights are marked with a code combining the coating weight of each side. The marking methods are as follows.
When attaching a label indicating an application of ¡°differentiated coating weights¡± on two sides of the steel sheets or coils, a letter ¡°D¡± is written after the minimum coating weight code on the surface with the label. (e.g., E8/E16D)
Zn Coating Weight Code | Minimum Zn Coating Weight (One Side) | Standard Coating Weight | Corresponding Zinc Thickness (mm) / One Side | |
---|---|---|---|---|
Both-Sided Coating | Differential Galvanizing | |||
E8 | 2.5 | - | 3 | 0 |
E8 | 8.5 | 8.0 | 10 | 0.001 |
E16 | 17.0 | 16.0 | 20 | 0.003 |
E24 | 25.5 | 24.0 | 30 | 0.004 |
E32 | 34.0 | 32.0 | 40 | 0.005 |
E40 | 42.5 | 40.0 | 50 | 0.006 |
ASTM Standards
Category | Minimum Value (3) Points | Minimum Value (1) Points | ||
---|---|---|---|---|
Coating Weight (Both Sides) | Coating Weight (Both Sides) | |||
oz/ft©÷ | g/m©÷ | oz/ft©÷ | g/m©÷ | |
A | - | - | - | - |
B | 0.08 | 24 | 0.07 | 22 |
C | 0.16 | 48 | 0.15 | 0.003 |