30 U20302 30# - GB /T 710-2008

Grade	30
China ISC	U20302
Other Names
Corresponding Standard	GB /T 710-2008 Hot-Rolled Quality Carbon Structural Steel Sheets and Strips
Classification	Carbon Steel
Properties	Impact Toughness Machinability Weldability

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

form	Mark	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Elongation or Extension Rate δ %
Plates, Steel Strips	S	Hot Rolled Condition	≥490	≥24
Plates, Steel Strips	P	Hot Rolled Condition	≥490	≥22

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

ISC

CNS

JIS

ASTM/AISI

UNS

ISO

DIN EN/DIN

W-Nr.

NF EN/NF

GOST

BS EN/BS

U20302

S30C

SM30C

1030

G10300

C30E4

C30E
Ck30

1.1178

C30E
SC32

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

30 Corresponding Standards(Same grade name, different standards)

1	GB /T 699-1999
	30 U20302 30#
2	GB /T 699-2015
	30 U20302
3	GOST 1050-1988
	30
4	GB /T 17107-1997
	30
5	GB /T 3078-2019
	30 30#
6	GB /T 710-2008
	30 U20302 30#
7	GB /T 711-2017
	30 30#
8	HB /Z 136-2000
	30
9	GB /T 13237-2013
	30
10	GB 3522-1983
	30

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!