34CrMoS4 - EN ISO 683-2-2018

Grade	34CrMoS4
Corresponding Standard	EN ISO 683-2-2018 Heat-treatable steels,alloy steels and free-cutting steels--Part 2：Alloy steels for quenching and tempering
Classification	Alloy Steel

34CrMoS4 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Cu	Mo
Minimum Value	0.3	0.1	0.6	-	0.02	0.9	-	0.15
Maximum Value	0.37	0.4	0.9	0.025	0.04	1.2	0.4	0.3

34CrMoS4 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
Bar, flat material, forging; d≤16 or t≤8	Quenching and Tempering (+QT)	1000~1200	≥800	≥11	≥45	-	-
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering (+QT)	900~1100	≥650	≥12	≥50	-	≥40
Bar, flat material, forging; 40<d≤100 or 20<t≤60	Quenching and Tempering (+QT)	800~950	≥550	≥14	≥55		≥45
Bars, flat products, forgings; 100<d≤160 or 60<t≤100	Quenching and Tempering (+QT)	750~900	≥500	≥15	≥55	-	≥45
Bars, Flats, Forgings; 160<d≤250 or 100<t≤160	Quenching and Tempering (+QT)	700~850	≥450	≥15	≥60	-	≥45
Bars, semi-finished products	Processed to improve shearability (+S)	-	-	-	-	≤255	-
Bars, flat products, forgings, semi-finished products, rebar	Soft Annealing (+A)	-	-	-	-	≤223	-

Approximate Comparison Table Alloy Steel for Quenching and Tempering

United States	International Organization for Standardization	Germany		France	European Standard
ASTM	ISO	DIN EN/DIN	W-Nr.	NF EN/NF	EN	Numerical Grade
4135	34CrMoS4	34CrMoS4	1.7226	34CD4u	34CrMoS4	1.7226

34CrMoS4 Corresponding Standards(Same grade name, different standards)

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