15NiCuMoNb - NB /T 47008-2017

Grade	15NiCuMoNb
Corresponding Standard	NB /T 47008-2017 Carbon and Alloy Steel Forgings for Pressure Equipment
Classification	Alloy Steel

15NiCuMoNb Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V	Nb
Minimum Value	0.11	0.25	0.8	-	-	-	1	0.5	0.25	-	0.015
Maximum Value	0.17	0.5	1.2	0.025	0.015	0.3	1.3	0.8	0.5	0.02	0.045

15NiCuMoNb Mechanical Properties

thickness t mm	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
t≤500	N + T or Q + T (Tempering Temperature ≥640°C)	610~780	≥440	≥17	* 185~255	20°C ≥47
t≤500			≥422
			≥412
			≥402
			≥392
			≥382
			≥373
			≥343
			≥304

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