37Cr4 - JIS G 7105-2000

Grade	37Cr4
Corresponding Standard	JIS G 7105-2000 Heat-Treatable Steels, Alloy Steels and Free-Cutting Steels — Part 18 : Bright Products Of Unalloyed and Low Alloy Steels
Classification	Alloy Steel
Properties	Carburizing Ability

37Cr4 Chemical Element Composition Content (%)

Component	C	Si ^*	Mn	P	S	Cr
Minimum Value	0.34	0.1	0.6	-	-	0.9
Maximum Value	0.41	0.4	0.9	0.035	0.035	1.2

◎ Steels with machinability which has been improved either by the addition of lead or by higher sulfur levels up to about 0.100 % (m/m) S (including controlled sulfide morphology) may be available on request.
* Steels may be supplied with a lower silicon content, in which case alternative means of deoxidation must be used.

37Cr4 Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
t≤16	TC	≤960
16＜t≤40	TC	≤940
40＜t≤80	TC	≤920
t≤80	TC+TA, P+TA or G+TA				≤235
t≤16	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	950~1150	≥750	≥11		KU: ≥20 KV: ≥30
16＜t≤40	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	850~1000	≥630	≥13		KU: ≥25 KV: ≥35
40＜t≤80	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	750~900	≥510	≥14		KU: ≥25 KV: ≥35

37Cr4 Corresponding Standards(Same grade name, different standards)

1	ISO 683-18-1996
	37Cr4
2	DIN 17200-1987
	37Cr4 1.7034
3	EN 10083-3-2006
	37Cr4 1.7034
4	EN 10263-4-2001
	37Cr4 1.7034
5	EN 10250-3-1999
	37Cr4 1.7034
6	VDI 2230-1-2015
	37Cr4 1.7034
7	DIN EN 10263-4-2018
	37Cr4 1.7034
8	EN 10263-4-2017
	37Cr4 1.7034
9	ISO 683-2-2016
	37Cr4
10	ISO 683-18-2014
	37Cr4
11	EN ISO 683-2-2018
	37Cr4
12	ISO 4954-2018
	37Cr4
13	NF EN 10083-3-2006
	37Cr4 1.7034 (38C4)
14	ISO 4954-1-2024
	37Cr4
15	DIN 1654-4-1989
	37Cr4 1.7034
16	JIS G 7105-2000
	37Cr4

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