Galvanized Specifications


Galvanized Specification
DIMENSIONS
Thickness (mm)Width (mm)
0.20 - 1.20600 - 1250

TOLERANCES (THICKNESS/WIDTH)
Nominal Thickness (t)600 <= Width < 10001000 <= 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 GradesFor General Purpose Applications
Drawing GradesFor Drawing and Forming Applications
Structural GradesThese 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
SpecificationBoth Surfaces (g/m²)
ASTM 525-87 / ASTM 653-96JIS (G 3302 1994)SCB.CGLAverage Coating Mass in Spot Test on both surfacesMinimum Coating Mass in Triple Spot Test on both surfaces
G-90Z 27Z 27275234
Z 22Z 22220187
G-60Z 18Z 18180153
G-40Z 12Z 12120102

AVAILABLE DIMENSIONS
Nominal Zinc Coating Weight183214244305
SNI NoMinimal Weight-Direct measurement137168198244
07-2053-1995Minimal Weight-Indirect measurement122153183214
BJLSBase Metal Thickness (mm)Both Surfaces (g/m²)
200.20x
250.25x
300.30x
350.35x
400.40x
450.45x
500.50x
600.60x
700.70x
800.80x
900.90x
1001.00x
1101.10x
1201.20x

MECHANICAL PROPERTIES
QualityMechanical Properties
Yield Strength (Mpa)Tensile Strenght (Mpa)Elongation (%)Hardness Value Rockwell Scale
Hard Quality500 - 700570 - 7102 - 574 - 80 HR30T
(0.20 up to 0.30 mm)84 - 88 HR15T
Soft Quality270 - 370350 - 40028 - 3850 - 60 HR30T
(0.20 up to 1.20 mm)77 - 80 HR15T

KIND OF PRODUCT
SNI No. 07-2053-1995
Commercial Quality
- ASTM -
SpecificationQuality
A 526-90Commercial Quality
A 527-90Lockforming Quality
A 523-90*)Drawing Quality
A 642-90*)Drawing Quality - Special Killed
A 446-76Structural Quality
A 653-96Lockforming Quality, Commercial Steel, Type A, B, C Grade-80, Structural Steel Grade-33, Grade-37
*) These specification should be agreed upon mutual understanding between the purchaser and the manufacturer
- JIS G 3302 (1994) -
SpecificationQuality
SGCCCommercial (Soft)
SGCHCommercial Hard (Full hard)
SGCD 1-2-3*)Drawing Class 1-2-3
SGC 340Structural
SGC 400*)Structural
*) These specification should be agreed upon mutual understanding between the purchaser and the manufacturer

COATING CHEMICAL COMPOSITION
FePbAlZn
0.11%0.06%0.13%99.70%

SURFACE TREATMENT
TreatmentApplications
UnChromated and DryPhospate and Painting
Chromated and DryGeneral Purpose

COATING SURFACE FINISHED
Regular Spangle - Bright