30CrNiMo8 1.6580 - DIN 1654-4-1989

30CrNiMo8 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.26	-	0.3	-	-	1.8	1.8	0.3
Maximum Value	0.34	0.4	0.6	0.035	0.035	2.2	2.2	0.5

30CrNiMo8 Mechanical Properties

diameter d mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Specified Plastic Yield Strength Rp_0.2 Mpa	Elongation or Extension Rate δ %	Reduction of Area ψ %	Impact Energy Absorption KV2 J
Steel	Spheroidizing Annealing (GKZ) or Spheroidizing Annealing + Peeling (GKZ+SH)	≤700			≥58
Steel	Cold drawing + Spheroidizing Annealing (K+GKZ)	≤680			≥60
Steel	Cold drawing + Spheroidizing annealing + Skinning (K+GKZ+K)	≤700			≥60
d≤16	Quenching and Tempering	1250~1450	≥1050	≥9	≥40	KU: ≥25 KV: ≥30
16＜d≤40	Quenching and Tempering	1250~1450	≥1050	≥9	≥40	KU: ≥25 KV: ≥30
40＜d≤100	Quenching and Tempering	1100~1300	≥900	≥10	≥45	KU: ≥29 KV: ≥35

1 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

2 Approximate Comparison Table structural alloy steel

China	Japan	International Organization for Standardization	Germany	France	European Standard		Russia	United Kingdom
GB	JIS	ISO	DIN EN/DIN	NF EN/NF	EN	Numerical Grade	GOST	BS EN/BS
30Cr2Ni2Mo	SNCM431	31CrNiMo8	30CrNiMo8	30CND8	30CrNiMo8	1.6580	3KH3M3F	823M30

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

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