Grade 30
Corresponding Standard GB /T 13237-2013
Cold Rolled Quality Carbon Sturctural Steel Sheets and Strips
Classification Carbon Steel
30 Chemical Element Composition Content (%)
Component C Si Mn P S Cr Ni Cu
Minimum Value 0.27 0.17 0.5 - - - - -
Maximum Value 0.34 0.37 0.8 0.035 0.035 0.25 0.3 0.25
30 Mechanical Properties
thickness
t
mm
Tensile Strength
σb
Mpa
Elongation or Extension Rate
δ
%
t ≤ 0.6 390~510 ≥ 16①
0.6<t ≤ 1 390~510 ≥ 18①
1<t ≤ 1.5 390~510 ≥ 19①
1.5<t ≤ 2 390~510 ≥ 21①
2<t ≤ 2.5 390~510 ≥ 21①
t>2.5 390~510 ≥ 22①
1 Approximate Comparison Table High-Quality Carbon Structural Steel
China Taiwan, China Japan South Korea United States International Organization for Standardization Germany France Russia United Kingdom
GB ISC CNS JIS KS ASTM/AISI UNS ISO DIN EN/DIN W-Nr. NF EN/NF GOST BS EN/BS
30 U20302 S30C S30C SM30C 1030 G10300 C30E4 C30E
Ck30
1.1178 C30E
SC32
30 C30E
080M30
2 Approximate Comparison Table Carbon Structural Steel and Engineering Steel
China Japan International Organization for Standardization
GB JIS ISO
30 S30C C30
3 Approximate Comparison Table Non-Alloy Steel for Quenching and Tempering
China Japan International Organization for Standardization
GB JIS ISO
30 S30C C30E
4 Approximate Comparison Table High-Quality Carbon Structural Steel
China Japan United States International Organization for Standardization Germany France European Standard Russia United Kingdom
GB JIS SAE ISO DIN EN/DIN W-Nr. NF EN/NF EN Numerical Grade GOST BS EN/BS
30 S30C 1030 C30
C30E4
C30
Ck30
1.0528 AF50C30
XC32
C30 1.0528 30 080M32
En5
5 Approximate Comparison Table High-Quality Carbon Structural Steel
China Japan United States International Organization for Standardization France Russia United Kingdom
GB JIS ASTM/AISI ISO NF EN/NF GOST BS EN/BS
GB/T 699-1999
30
S30C 1030 ISO 630-1:1987
C30
C30E4
C30M2
C30
XC32
30 060A30
6 Approximate Comparison Table High-Quality Carbon Structural Steel
China United Kingdom
GB BS EN/BS
30 080A32

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