05Cr17Ni4Cu4Nb S51740 - JB /T 6908-2020

Grade	05Cr17Ni4Cu4Nb
	S51740
Corresponding Standard	JB /T 6908-2020 Steel Forings for Displacement Compressors
Classification	Precipitation-Hardening Stainless Steel

05Cr17Ni4Cu4Nb Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Nb
Minimum Value	-	-	-	-	-	15.5	3	3	0.15
Maximum Value	0.07	1	1	0.04	0.03	17.5	5	5	0.45

05Cr17Ni4Cu4Nb Mechanical Properties

thickness or diameter 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 %	Hardness HBW	Impact Energy Absorption KV2 J
Steel:	Solid Solution	-	-	-	-	HBW：≤ 363 HRC：≤38	-
≤ 75	Precipitation hardening, aging at 480°C	1310	≥1180	≥10	≥40	HBW：≥375 HRC：≥40	-
＞ 75 ~200	Precipitation hardening, aging at 480°C	1310	≥1180	≥10	≥35	HBW：≥375 HRC：≥40	-
≤ 150	Precipitation Hardening, 620°C Aging	835	≥680	≥14	≥60	HBW：≥277 HRC：28~33	KU2：≥78

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

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