37Cr4 1.7034 38C4 - NF EN 10083-3-2006

Grade	37Cr4
	1.7034
Old Grade
Corresponding Standard	NF EN 10083-3-2006 Tempered alloy structural steel
Classification	Alloy Steel

37Cr4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S ^①	Cr
Minimum Value	0.34	-	0.6	-	-	0.9
Maximum Value	0.41	0.4	0.9	0.025	0.035	1.2

37Cr4 Mechanical Properties

condition	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
Steel: d ≤ 16mm; t ≤ 8mm	Quenching + Tempering (+QT)	950~1150	≥750	≥11	≥35	HRC ① ≥51
Steel: 16mm ≤ d ≤ 40mm; 8mm ≤ t ≤ 20mm	Quenching + Tempering (+QT)	850~1000	≥630	≥13	≥40	HRC ① ≥51	≥35
Steel: 40mm ≤ d ≤ 100mm; 20mm ≤ t ≤ 60mm	Quenching + Tempering (+QT)	750~900	≥510	≥14	≥40	HRC ① ≥51	≥35
Steel:	Processed to a Certain Shearability (+S)					≤255
Steel:	Softening Annealing (+A)					≤235

Approximate Comparison Table structural alloy steel

China	Japan	United States	International Organization for Standardization	Germany		France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
35Cr	SCr435H	Gr.5135	37Cr4	37Cr4	1.7034	37Cr4 38C4	37Cr4	1.7034	38KHA 40KH	2245	530A36 530M36

37Cr4 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"!