30CrNiMo8 - ISO 683-2-2016

Grade	30CrNiMo8
Corresponding Standard	ISO 683-2-2016 Alloy steels for quenching and tempering
Classification	Alloy Steel

30CrNiMo8 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo
Minimum Value	0.26	0.1	0.5	-	-	1.8	1.8	-	0.3
Maximum Value	0.34	0.4	0.8	0.025	0.035	2.2	2.2	0.4	0.5

30CrNiMo8 Mechanical Properties

	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	1030~1230	≥850	≥12	≥40
Bar, flat material, forging; 16<d≤40 or 8<t≤20	Quenching and Tempering	1030~1230	≥850	≥12	≥40		≥30
Bar, flat material, forging; 40<d≤100 or 20<t≤60	Quenching and Tempering	980~1180	≥800	≥12	≥45		≥35
Section steel: I-beam, angle, U-steel	Quenching and Tempering	980~1180	≥800	≥12	≥50		≥45
Section steel: I-beam, angle, U-steel	Quenching and Tempering	930~1130	≥750	≥12	≥50		≥45
Section steel: I-beam, angle, U-steel	Soft Annealing (+A)					≤248

Approximate Comparison Table

China		Japan	International Organization for Standardization	Germany		European Standard
GB	ISC	JIS	ISO	DIN EN/DIN	W-Nr.	EN	Numerical Grade
30Cr2Ni2Mo	A50300	SNCM431	30CrNiMo8	30CrNiMo8	1.6580	30CrNiMo8	1.6580

30CrNiMo8 Corresponding Standards(Same grade name, different standards)

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