40CrMnMo - GB /T 3078-2019

Grade	40CrMnMo
Corresponding Standard	GB /T 3078-2019 Quality structural steel cold drawm bars
Classification	Alloy Steel

40CrMnMo Mechanical Properties

condition	Heat Treatment or Condition	Hardness HBW
Delivery condition	Annealing, Bright Annealing, High-Temperature Tempering or Normalizing and Tempering	≤241
Delivery condition	Cold Drawing, Cold Drawing and Polishing	≤269

1 Approximate Comparison Table structural alloy steel

China		Japan	South Korea	United States		International Organization for Standardization	Germany		Russia	United Kingdom
GB	ISC	JIS	KS	ASTM/AISI	UNS	ISO	DIN EN/DIN	W-Nr.	GOST	BS EN/BS
40CrMnMo	A34402	SCM440	SCM440	4142 4140	G41420	42CrMo4	42CrMo4	1.7225	40ХГМ	708A42

2 Approximate Comparison Table structural alloy steel

40CrMnMo Corresponding Standards(Same grade name, different standards)

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