05Cr17Ni4Cu4Nb - NB /T 20008.12-2010

Grade	05Cr17Ni4Cu4Nb
Corresponding Standard	NB /T 20008.12-2010 Other Material for Pressurized Water Reactor Nuclear Power Plants-Part 12: Forged or Rolled Bars for Class 1,2,3 Bolts and Nuts
Classification	Precipitation-Hardening Stainless Steel

05Cr17Ni4Cu4Nb Chemical Element Composition Content (%)

Component	C	Si	Mn	P ^①	S ^①	Cr	Ni	Cu	Nb
Minimum Value	-	-	-	-	-	15.5	3	3	0.15
Maximum Value	0.07	1	1	0.025	0.02	17.5	5	5	0.45

05Cr17Ni4Cu4Nb Mechanical Properties

product	Test Temperature	Heat Treatment or Condition	Tensile Strength σ_b	Yield Point σ_s	Elongation or Extension Rate δ %	Hardness HBW	Impact Energy Absorption KV2 J
Bolts, Screws, Studs	Room Temperature	Solid Solution Treatment	-	-	-	HBW: ≤363 HRC: ≤38 HV: ≤382	-
Bolts, Screws, Studs	Room Temperature	Precipitation Hardening	Screw type A grade: ≥ 960	Screw type A grade: ≥ 790	Screw type A grade: ≥ 0.2d	Screw type A grade: HBW: ≥ 302 HRC: ≥ 32 HV: ≥ 318	0°C: Class A screws: ≥60 (Level 1) ≥40 (Level 2/3)
Bolts, Screws, Studs		Precipitation Hardening		Screw type A grade: ≥ 630

05Cr17Ni4Cu4Nb Corresponding Standards(Same grade name, different standards)

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