40Mn U21402 - GB /T 699-2015

Grade	40Mn
China ISC	U21402
Corresponding Standard	GB /T 699-2015 Quality Carbon Structure Steels
Classification	Carbon Steel
Properties	Fatigue Resistance
Density	7.82 g/cm³

40Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.37	0.17	0.7	-	-	-	-	-
Maximum Value	0.44	0.37	1	0.035	0.035	0.25	0.3	0.25

40Mn Mechanical Properties

diameter(thickness) d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Hardness HBW	Impact Energy Absorption KV2 J
d=25 (Sample size)	Normalizing + Quenching + Tempering	≥590	≥355	≥17	≥45	Unprocessed Steel ≤229	KU2 ≥47
						Annealed Steel ≤207

1 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

2 Approximate Comparison Table High-Quality Carbon Structural Steel

China		Japan	United States	International Organization for Standardization	European Standard
GB	ISC	JIS	ASTM/AISI	ISO	EN	Numerical Grade
40Mn (GB/T 699-2015)	U21402	SWRH42B (JIS G3506:2004)	1043 (ASTM A29/A29M:2005)	C40E4 (ISO 683-18:1996)	C40E (EN 10083-1:1991+A1:1996) (EN 10084:1998)	1.1186

40Mn 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"!