Galvanized Specifications

Galvanized Specification

Dimensions

Thickness (mm) Width (mm)
0.20-1.20 600-1250

Tolerances (Thickness/Width)

Nominal Thickness (t) \ Width 600 ≤ Width < 1000 1000 ≤ Width < 1219
t < 0.25 ± 0.04 ± 0.04
0.25 ≤ t < 0.40 ± 0.05 ± 0.05
0.40 ≤ t < 0.60 ± 0.06 ± 0.06
0.60 ≤ t < 0.80 ± 0.07 ± 0.07
0.80 ≤ t < 1.00 ± 0.07 ± 0.08
1.00 ≤ t < 1.25 ± 0.08 ± 0.09

Coil Specifications

I.D. (mm) ± 508
O.D. (mm) 800 - 2140
Max weight (MT) 15 MT

Dimensions

Commercial Grades For General Purpose Applications
Drawing Grades For Drawing and Forming Applications
Structural Grades These are produced with a Guaranteed Minimum Tensile Strength

MINIMUM COATING MASS ON BOTH SURFACES

SCB Galvanized Steel is produced in a range of zinc coating thickness which are specified by coating weight classes in accordance with the prescribed standard. As an example the weight of Zinc coating for JIS G3302-1994 is shown in the following table :

Coating Weight

Specification Both Surfaces (g/m²)
ASTM 525-87 JIS G Coating Mass Symbol (SCB/SNI) Minimum Average Coating Mass at Triple Sports Minimum Coating Mass at Single Spot
ASTM 653-96 3302 : 2007
G - 90 Z 27 Z 27 275 234
Z 22 Z 22 220 187
Z 20 Z 20 200 170
G - 60 Z 18 Z 18 180 153
Z 14 Z 14 140 119
G - 40 Z 12 Z 12 120 102
Z 20 Z 20 100 85

Available Dimensions

SNI Table

Nomor Tebal Nominal Logam Dasar (mm) Simbol Massa Lapisan Seng
01 0.20 - 0.25 Z10, Z12
02 0.30 - 0.35 Z14
03 0.40 - 0.50 Z18
04 0.60 - 1.20 Z20, Z22, Z27

Mechanical Properties

Symbol Tensile Test Curvature Test Hardness (HRB)
Yield Strength, Minimum (N/mm²) Tensile Strength, Minimum (N/mm²) Strain, Minimum (%) Curved Angle (*) Curb Barb (t)
SGCC - - - 180 0t Max. 65
SGCH - - - 180 0t Min. 85
G 250 250 320 25 180 0t -
G 300 300 340 20 180 1t -
G 550 550 550 2 180 2t -

Kind of Product

SNI No. 07-2053-1995
Commercial Quality

ASTM

Specification Quality
A 526-90 Commercial Quality
A 527-90 Lockforming Quality
A 523-90* Drawing Quality
A 642-90* Drawing Quality - Special Killed
A 446-76 Structural Quality
A 653-96 Lockforming Quality, Commercial Steel, Type A, B, C Grade-80, Structural Steel Grade-33, Grade-37

JIS G 3302 (1994)

Specification Quality
SGCC Commercial (Soft)
SGCH Commercial Hard (Full hard)
SGCD 1-2-3* Drawing Class 1-2-3
SGC 340 Structural
SGC 400* Structural

* These specification should be agreed upon mutual understanding between the purchaser and the manufacturer

Coating Chemical Composition

Fe Pb Al Zn
0.11% 0.06% 0.13% 99.70%

Surface Treatment

Treatment Applications
UnChromated and Dry Phospate and Painting
Chromated and Dry General Purpose

Coating Surface Finished

Regular Spangle - Bright