Mechanical Properties
 
  Table.4-1 Tensile Test of Galvanized steel sheet -Cold rolled steel- (Nisshin Standard)
‚–
Symbol
Yield
point
N/mm²
Tensile
Strength
N/mm²
Elongation (%)
Thickness (mm)
0.4 to
0.6 excl.
0.6 to
1.0 excl.

1.0 to
1.6 excl.

1.6
or more
Commercial quality
CC
-
-
-
Drawing quality
CD
-
>270
>34
>36
>37
>38
Deep drawing quality
CE
-
>270
>36
>38
>39
>40
Extra-deep drawing quality
CU
-
>270
-
>40
>41
>42
Structural
quality
340N grade
CK340
>245
>340
>20
400N grade
CK400
>295
>400
>18
440N grade
CK400
>335
>440
>18
490N grade
CK490
>365
>490
>16
   
  Table.4-2 Tensile Test of Galvanized steel sheet -Hot rolled steel- (Nisshin Standard)
‚–
Symbol
Yield point
(N/mm²)
Tensile Strength
(N/mm²)
Elongation
%
Commercial quality
HC
-
-
-
Structural
quality
340N grade
HK340
>245
>340
>20
400N grade
HK400
>295
>400
>18
440N grade
HK440
>335
>440
490N grade
HK490
>365
>490
>16
   
  Table.4-3 Tensile Test of Galvanized steel sheet -Cold rolled steel- (JIS Standard)
‚–
Symbol
Yield
point
N/mm²
Tensile
Strength
N/mm²
Elongation (%)
Thickness (mm)
0.25
to0.4 excl
0.4to
0.6
excl.
0.4to
0.6 excl.
0.6to
1.0 excl.

1.0to
1.6 excl.

1.6
or more
Commercial quality
SGCC
-
-
-
-
-
-
-
-
Drawing quality I
SGCD1
-
>270
-
>34
>36
>37
>38
-
Drawing quality II
SGCD2
-
>270
-
>36
>38
>39
>40
-
Drawing quality III
SGCD3
-
>270
-
>38
>40
>41
>42
-
Structural
quality
340N grade
SGC340
>245
>340
>20
400N grade
SGC400
>295
>400
>18
440N grade
SGC440
>335
>440
>18
490N grade
SGC490
>365
>490
>16
570N grade
SGC570
>560
>570
-
   
  Table.4-4 Tensile Test of Galvanized steel sheet -Hot rolled steel- (JIS Standard)
‚–
Symbol
Yield point
(N/mm²)
Tensile Strength
(N/mm²)
Elongation
%
Commercial quality
SGHC
-
-
-
Structural
quality
340N grade
SGH340
>245
>340
>20
400N grade
SGH400
>295
>400
>18
440N grade
SGH440
>335
>440
490N grade
SGH490
>365
>490
>16
540N grade
SGH540
>400
>540
-
   
  Table.4-5 Tensile Test of Galvanized steel sheet (ASTM Standard)
Symbol
Yield
Strength
ksi
Tensile
Strength
ksi
Elongation
%
Symbol
Yield
Strength
MPa
Tensile
Strength
MPa
Elongation
%
SQ33
>33
>45
>20
SQ230
>230
>310
>20
SQ37
>37
>52
>18
SQ255
>255
>360
>18
SQ40
>40
>55
>16
SQ275
>275
>380
>16
SQ50
>50
>65
>12
SQ340
>340
>450
>12
   
  Table.5-1 Bending Test of Galvanized steel sheet (Nisshin Standard)
‚–
Symbol
Bendability
less than
1.6 excl.
1.6 to 3.0 excl.
3.0 or more
Coating mass
Coating mass
Coating mass
Cold
Hot
less than
190 incl.
300
less than
190 incl.
300
less than
190 incl.
300
Commercial quality
CC
HC
1
2
1
2
2
2
Drawing quality
CD
-
1
-
1
-
-
-
Deep drawing quality
CE
-
0
-
0
-
-
-
Extra-deep drawing quality
CU
-
Structural
quality
340N grade
CK340
HK340
1
2
1
2
2
3
400N grade
CK400
HK400
2
2
2
2
3
3
440N grade
CK440
HK440
3
3
3
3
3
3
490N grade
CK490
HK490
Note 1.
In case of Hot rolled steel as base metal, the values in the table above adapts to the thickness 1.6mm or more.
2.
The values in the table above represent the internal space of bend, expressed by the number of sheets of same thickness.
3.
The bending test shall be done by bending a test specimen by 180º at a right angle to the rolling direction. The outside of the bend shall be free from exfoliation of the coating and from cracking and breaking of base metal. This dose not apply to those parts of the specimen that are within 7mm of either edge.
   
  Table.5-2 Bending Test of Galvanized steel sheet (JIS Standard)
‚–
Symbol
Bendability
less than
1.6 excl.
1.6 to
3.0 excl.
3.0
or more
Coating mass
Coating mass
Coating mass
Cold
Hot
less than
Z27 incl.
Z35
Z45
,Z60
less than
Z27 incl.
Z35
Z45
,Z60
less than
Z27 incl.
Z35
Z45
,Z60
Commercial quality
SGCC
SGHC
1
1
2
1
2
2
2
2
2
Drawing quality I
SGCD1
-
1
-
-
1
-
-
-
-
-
Deep drawing quality II
SGCD2
-
0
-
-
0
-
-
-
-
-
Drawing quality III
SGCD3
-
Structural
quality
340N grade
SGC340
SGH340
1
1
2
1
1
2
2
2
3
400N grade
SGC400
SGH400
2
2
2
2
2
2
3
3
3
440N grade
SGC440
SGH440
3
3
3
3
3
3
3
3
3
490N grade
SGC490
SGH490
540N grade
SGC540
-
570N grade
-
SGH570
-
-
-
-
-
-
-
-
-
Note 1.
In case of Hot rolled steel as base metal, the values in the table above adapts to the thickness 1.6mm or more.
2.
The values in the table above represent the internal space of bend, expressed by the number of sheets of same thickness.
3.
The bending test shall be done by bending a test specimen by 180º at a right angle to the rolling direction. The outside of the bend shall be free from exfoliation of the coating and from cracking and breaking of base metal. This dose not apply to those parts of the specimen that are within 7mm of either edge.
4.
The values of Z35, Z45 and Z60 in the table above is available when a party concerned makes agreements.
  Table.5-3 Bending Test of Galvanized steel sheet (ASTM Standard)
Mass
Symbol
Bendability
CQ,LFQ,DQ,DQSK
SQ grade
Specified Thickness (in.)
33
37
40
t<0.039
0.039<t<0.079
0.079<
G01
0
0
0
1.5
2
2.5
G30
0
0
0
1.5
2
2.5
G40
0
0
0
1.5
2
2.5
G60
0
0
0
1.5
2
2.5
G90
0
0
1
1.5
2
2.5
G115
0
0
1
1.5
2
2.5
G140
1
1
2
2
2
2.5
G165
2
2
2
2
2
2.5
G185
2
2
2
2
2
2.5

Mass
Symbol
Bendability
CQ,LFQ,DQ,DQSK
SQ grade
Specified Thickness (mm)
230
255
275
t<1.0
1.0<t<2.0
2.0<
Z001
0
0
0
1.5
2
2.5
Z120
0
0
0
1.5
2
2.5
Z180
0
0
0
1.5
2
2.5
Z275
0
0
1
1.5
2
2.5
Z350
0
0
1
1.5
2
2.5
Z450
1
1
2
2
2
2.5
Note 1.
The values in the table above represent the ratio of the inside diameter to thickness of the specimen.
2.
The bending test shall be done by bending a test specimen by 180º at a right angle to the rolling direction. The outside of the bend shall be free from exfoliation of the coating and from cracking and breaking of base metal.
 
001