30CrNiMo8 1.6580 - DIN 17204-1990

Grade	30CrNiMo8
Germany W-Nr.	1.6580
Corresponding Standard	DIN 17204-1990 Seamless Circular Tubes Made from Steels for Quenching and Tempering Technical Delivery Conditions
Classification	Alloy Steel

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

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
Hot drawn, cold drawn pipes	Annealing					≤248
Pipes t≤8	Quenching + Tempering (V)	1250~1450	≥1050	≥9(long.)；≥7(tr.)	≥40
Pipes; 8< t≤20	Quenching + Tempering (V)	1250~1450	≥1050	≥9(long.)；≥7(tr.)	≥40		* ≥30
Pipes; 20< t≤50	Quenching + Tempering (V)	1100~1300	≥900	≥10(long.)；≥8(tr.)	≥45		≥35
Pipe; 50<t≤80	Quenching + Tempering (V)	1000~1200	≥800	≥11(long.)；≥9(tr.)	≥50		≥45

1 Approximate Comparison Table Alloy Steel for Quenching and Tempering

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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