34CrNiMo6 - EN ISO 683-2-2018

Grade	34CrNiMo6
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

34CrNiMo6 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.3	0.1	0.5	-	-	1.3	1.3	-	0.15
Maximum Value	0.38	0.4	0.8	0.025	0.035	1.7	1.7	0.4	0.3

34CrNiMo6 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)	1200~1400	≥1000	≥9	≥40	-	-
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering (+QT)	1100~1300	≥900	≥10	≥45	-	≥45
Bar, flat material, forging; 40<d≤100 or 20<t≤60	Quenching and Tempering (+QT)	1000~1200	≥800	≥11	≥50	-	≥45
Bars, flat products, forgings; 100<d≤160 or 60<t≤100	Quenching and Tempering (+QT)	900~1100	≥700	≥12	≥55	-	≥45
Bars, Flats, Forgings; 160<d≤250 or 100<t≤160	Quenching and Tempering (+QT)	800~950	≥600	≥13	≥55	-	≥45
Bars, flat products, forgings, semi-finished products, rebar	Soft Annealing (+A)	-	-	-	-	≤248	-

1 Approximate Comparison Table Structural Alloy Steel

China	International Organization for Standardization	European Standard
GB	ISO	EN	Numerical Grade
34Cr2Ni2Mo	34CrNiMo6	34CrNiMo6	1.6582

2 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	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
34CrNi3Mo 34CrNiMo ZG34CrNiMo	SNCM447	4340	36CrNiMo6	34CrNiMo6 GS-34CrNiMo6V	35NCD6	34CrNiMo6	1.6582	36KH2N2MFA 38KH2N2MA 40KHN2MA	2541	817M40

3 Approximate Comparison Table Cast Steel

China	Japan	United States	International Organization for Standardization	Germany	France	European Standard		Russia	Sweden	United Kingdom
GB	JIS	ASTM	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	SS	BS EN/BS
ZG34CrNiMo 34CrNi3Mo 34CrNiMo	SNCM447	4340	36CrNiMo6	GS-34CrNiMo6V 34CrNiMo6	35NCD6	34CrNiMo6	1.6582	36KH2N2MFA 38KH2N2MA 40KHN2MA	2541	817M40

4 Approximate Comparison Table Steel for Cold Heading and Cold Extrusion

International Organization for Standardization	European Standard
ISO	EN	Numerical Grade
34CrNiMo6	34CrNiMo6	1.6582

5 Approximate Comparison Table Structural Alloy Steel

6 Approximate Comparison Table Structural Alloy Steel

34CrNiMo6 Corresponding Standards(Same grade name, different standards)

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