Galvanised Steel (GI)

1. Available products specification

Specification JIS G 3302
SGCC
Thickness 0.19 mm. – 3.0 mm.
Width Min. 9 mm. Max. 1219 mm.
Length Length from 300 mm. – 6000 mm. and special length available upon request

2. Meterial standard

– Chemical composition

Standard Designation Chemical Composition (%)
C
Max.
Si
Max.
Mn
Max.
P
Max.
S
Max.
Ni Cr Mo N
SGCC 0.12 0.50 0.040 0.045

 

– Mechanical property

Standard Designation Mechanical properties Reference
Tensile Test Hardness Test
Yield Strength
(N/mm2)
Min
Tensile Strength
(N/mm2)
Min
Elongation
(%)
Min
HV

Max
HRB

Max
HB

Max
SGCC Bending Test 180 No Crack JIS G 3302
Remark : Tensile test method shall comply with JIS Z 2241
Tensile test specimen shall conform to JIS Z 2201 No. 52201 No.5

 

– Camber, flatness, opposite angle, burr

  Process Width Tolerance Max.
Camber ALL 8 – 80 mm. 8.0 mm. / 2 m.
81 – 1219 mm. 4.0 mm. / 2 m.
Flatness Shear (A,S,D) 8 – 80 mm. no limitation
81 – 1000 mm. 12.0 mm
1001 – 1500 mm. 15.0 mm.
Opposite Anlge Shear (A,S,D) 4′ x 8′ 1.0 mm.
5′ x 10′ 1.5 mm.
(200-1000) W x (200-1200)L 0.5 mm.
Other 1.0 mm.
Burr ALL 0.03 mm.

3. Classification of Sheet & Coil Products

Classification Ratio of Conforming Quantiry Quality of Sheet Remark
Sheet 100% According to boundary sample F or A grade customer
97% According to boundary sample F or A grade customer
  Good area > 97% According to boundary sample