34Cr4 - JIS G 7105-2000

Grade	34Cr4
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

34Cr4 Chemical Element Composition Content (%)

Component	C	Si ^*	Mn	P	S	Cr
Minimum Value	0.3	0.1	0.6	-	-	0.9
Maximum Value	0.37	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.

34Cr4 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	≤940
16＜t≤40	TC	≤920
40＜t≤80	TC	≤900
t≤80	TC+TA, P+TA or G+TA				≤223
t≤16	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	900~1100	≥700	≥12		KU: ≥25 KV: ≥35
16＜t≤40	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	800~950	≥590	≥14		KU: ≥30 KV: ≥40
40＜t≤80	TC+TQ+TT℗, P+TQ+TT or G+TQ+TT	700~850	≥460	≥15		KU: ≥30 KV: ≥40

34Cr4 Corresponding Standards(Same grade name, different standards)

1	ISO 683-18-1996
	34Cr4
2	DIN 17200-1987
	34Cr4 1.7033
3	EN 10083-3-2006
	34Cr4 1.7033
4	EN 10263-4-2001
	34Cr4 1.7033
5	EN 10250-3-1999
	34Cr4 1.7033
6	DIN EN 10263-4-2018
	34Cr4 1.7033
7	EN 10263-4-2017
	34Cr4 1.7033
8	ISO 683-2-2016
	34Cr4
9	ISO 683-18-2014
	34Cr4
10	EN ISO 683-2-2018
	34Cr4
11	ISO 4954-2018
	34Cr4
12	NF EN 10083-3-2006
	34Cr4 1.7033 (32C4)
13	ISO 4954-1-2024
	34Cr4
14	DIN 1654-4-1989
	34Cr4 1.7033
15	JIS G 7105-2000
	34Cr4

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