SM - ISO 8458-2-2002

Grade	SM
Corresponding Standard	ISO 8458-2-2002 Steel Wire for Mechanical Springs — Part 2: Patented Cold-Drawn Non-Alloy Steel Wire
Classification	Carbon Steel
Properties	High Elasticity

SM Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cu
Minimum Value	0.35	0.1	0.3	-	-	-
Maximum Value	1	0.3	1.2	0.03	0.03	0.2

1 Approximate Comparison Table High-Quality Carbon Structural Steel

China		United States		International Organization for Standardization	Germany		France	Russia	Sweden	United Kingdom
GB	ISC	ASTM/AISI	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	GOST	SS	BS EN/BS
65	U20652	1065	G10650	SL SM	Ck67	1.1231	XC65	65	1770	060A67

2 Approximate Comparison Table High-Quality Carbon Structural Steel

China		Japan	United States		International Organization for Standardization	Germany		France	Russia	United Kingdom
GB	ISC	JIS	ASTM/AISI	UNS	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	GOST	BS EN/BS
40Mn	U21402	(SWRH42B)	1039	G10390	SL SM	40Mn4	1.1157	40M5	40г	080A40

3 Approximate Comparison Table High-Quality Carbon Structural Steel

China		Japan	United States		International Organization for Standardization	France	Russia	Sweden	United Kingdom
GB	ISC	JIS	ASTM/AISI	UNS	ISO	NF EN/NF	GOST	SS	BS EN/BS
45Mn	U21452	(SWRH47B)	1046	G10460	SL SM	45M5	45г	1672	080A47

4 Approximate Comparison Table High-Quality Carbon Structural Steel

China		Japan	United States		International Organization for Standardization	Russia	Sweden	United Kingdom
GB	ISC	JIS	ASTM/AISI	UNS	ISO	GOST	SS	BS EN/BS
50Mn	U21502	(SWRH52B)	1053	G10530	SL SM	50г	1674	080A52

5 Approximate Comparison Table High-Quality Carbon Structural Steel

China		Taiwan, China	Japan	United States	International Organization for Standardization	Germany		Russia	Sweden	United Kingdom
GB	ISC	CNS	JIS	ASTM/AISI	ISO	DIN EN/DIN	W-Nr.	GOST	SS	BS EN/BS
60Mn	U21602	S58C	S58C (SWRH62B)	1062	SL SM	60Mn3	1.0642	60г	1678	080A62

SM Corresponding Standards(Same grade name, different standards)

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