The POSCO Quality

Electrical Galvanized Steel

Electrical galvanized steel is made by plating steel with zinc in an electrochemical manner. Plating uses pure zinc or zinc and nickel.

Product Specification

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

Pure-Zn, Zn-Ni, 굽힘각도, 굽힘간격에 대한 정보
Category POSCO
Pure-Zn Zn-Ni Bend Test
Bend Angle Radius of Flexure
Class 1 EGSC ENSC 180° 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 -
Note)
  • *Specifications marked with * require consultation with us prior to order.
YP(MPa), TS(MPa), EL(%), JIS/KS, ASTM 에 대한 정보
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) - -
Note)
  • 1. Figures within parenthesis require prior consultation.
  • 2. Contact us for details about the high tensile steel’s specifications in the Corresponding Dimensions column.

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.

  • - For Steel Sheets: Minimum coating weights on the “top/bottom” sides (e.g., E16/E16)
  • - For Steel Coils: Minimum coating weights on the “outer /inner” surfaces of a coil (e.g., E8/E16)

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)

아연의 부착량 표시기호, 양면동일도금, 편차도금, 표준 부착량, 상당 아연두께(mm)/편면에 대한 정보
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
Note)
  • 1. Coating weight code for zinc of over 40 mg/m2 and the minimum coating weight to be agreed upon between the client and the manufacturer.
  • 2. The thickness of the coating has been rounded off to the first digit below the decimal point based on the density of zinc, 7.1g/cm³, according to KSA 0021 (Rounding-Off Method).

ASTM Standards

최소치(3)점, 최소치(1)점, 부착량(양면), oz/ft², g/m²의 대한 정보
Category Minimum Value (3) Points Minimum Value (1) Points
Coating Weight (Both Sides) Coating Weight (Both Sides)
oz/ft² g/m² oz/ft² g/m²
A - - - -
B 0.08 24 0.07 22
C 0.16 48 0.15 0.003