40Mn - GB /T 3078-2019

Grade	40Mn
Corresponding Standard	GB /T 3078-2019 Quality Structural Steel Cold Drawm Bars
Classification	Carbon Steel

40Mn Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
Delivery condition	Annealing, Bright Annealing, High-Temperature Tempering or Normalizing and Tempering	≤217
Delivery condition	Cold Drawing, Cold Drawing and Polishing	≤269

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"!