22Cr12NiWMoV(C-422) - DL /T 439-2018

Grade	22Cr12NiWMoV(C-422)
Corresponding Standard	DL /T 439-2018 The Technical Guide for High-Temperature Bolt of Fossil-Fired Power Plant
Classification	Alloy Steel

22Cr12NiWMoV(C-422) Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	W	V
Minimum Value	0.2	-	0.5	-	-	11	0.5	-	0.9	0.9	0.2
Maximum Value	0.25	0.5	1	0.025	0.025	12.5	1	0.25	1.25	1.25	0.3

22Cr12NiWMoV(C-422) Mechanical Properties

condition	Test Temperature	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
Bolt Material	Room Temperature	≥930	≥760	≥12	≥32	277~331	≥11

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