◆ 일본공업규격 ( JIS Specification ) <<  이전화면 

JIS G3302 Hot-dip Zinc-coated Steel Sheet and Coil
1. Designation and Mechanical Requirements
Hot-rolled base metal used
Designation Thickness(mm) Yield Point
min.N/mm²
Tensile Strength
min.N/mm²
Elongation
min.%
Test Piece
SGHC1.6 ~ 6.0--- No.5 Cut
in Rolling
Direction
SGHC34024534020
SGHC40029540018
SGHC44033544018
SGHC49036549016
SGHC54040054016
Cold-rolled base metal used
Designation Thickness
mm
Yield Point
min.N/mm²
Tensile Strength
min.N/mm²
Elongation, min.% Test Piece
Nominal Thickness, mm
0.25 to
0.40 under
0.40 to
0.60 under
0.60 to
1.0 under
1.0 to
1.6 under
1.6 to
2.5 under
2.5 and
over
SGCC0.25~3.2 -------- No.5 Cut
in Rolling
Direction
SGCD10.40~2.3-270- 34363738-
SGCD2-270-363839 40-
SGCD30.60~2.3-270-38 404142-
SGC3400.25~3.2245340 202020202020
SGC400295400 181818181818
SGC440335440 181818181818
SGC490365490 161616161616
SGC5700.25~2.0560570 ------
 
2. Weight of Zinc Coating
Zinc Coating Designation Z08Z10Z12Z18Z20Z22 Z25Z27Z35Z45Z60
Minimum Weight of Zinc
Coating(g/m²)
80100120180200220 250275350450600
Remarks : The minimum weight of zinc coating mentioned above indicates the minimum weight of zinc coating on both sides of sheets or coils.
This expresses the average measured weight of zinc coating of triple spot test pieces cut from the test sheets.
 
3. Thickness Tolerances
Hot-rolled base metal used unit : mm  
  Width
Nominal Thickness  
1200 under1200 to
1500 under
1500 to
1800 under
1800 to 2300
and under
1.60 to 2.00 under±0.17±0.18±0.19(±0.22)
2.00 to 2.50 under±0.18±0.20±0.22(±0.26)
2.50 to 3.15 under±0.20±0.22±0.25±0.27
3.15 to 4.00 under±0.22±0.24±0.27±0.28
4.00 to 5.00 under±0.25±0.27--
5.00 to 6.00 under±0.27±0.29--
6.00±0.30±0.31--
 Remarks : ( ) Those figures shall apply up to and excluding 2000mm width.
Cold-rolled base metal used unit : mm  
  Width
Nominal Thickness  
630 under630 to
1000 under
1000 to
1250 under
1250 to
1600 under
1600 and over
under 0.25±0.04±0.04±0.04--
0.25 to 0.40 under±0.05±0.05±0.05±0.06-
0.40 to 0.60 under±0.06±0.06±0.06±0.07±0.08
0.60 to 0.80 under±0.07±0.07±0.07±0.07±0.08
0.80 to 1.00 under±0.07±0.07±0.08±0.09±0.10
1.00 to 1.25 under±0.08±0.08±0.09±0.10±0.12
1.25 to 1.60 under±0.09±0.10±0.11±0.12±0.14
1.60 to 2.00 under±0.11±0.12±0.13±0.14±0.16
2.00 to 2.50 under±0.13±0.14±0.15±0.16±0.18
2.50 to 3.15 under±0.15±0.16±0.17±0.18±0.21
3.15 and over±0.17±0.18±0.20±0.21-
 
4. Width Tolerance
unit : mm 
  Tolerances
4444 Width4444  
Hot-rolled base metal used Cold-rolled
base metal used
AB
1500 and Under+ 25
0
+ 10
0
+ 7
0
Over 1500+ 10
0
 
5. Length Tolerances
unit : mm 
Hot-rolled base metal used Cold-rolled base metal used
+ 150
+ 150


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