21Cr12MoV - DL /T 439-2018

Grade	21Cr12MoV
Corresponding Standard	DL /T 439-2018 The technical guide for high-temperature bolt of fossil-fired power plant
Classification	Alloy Steel

21Cr12MoV Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu	Mo	V
Minimum Value	0.18	-	0.3	-	-	11	0.3	-	0.8	0.25
Maximum Value	0.24	0.5	0.8	0.03	0.025	12.5	0.6	0.25	1.2	0.35

21Cr12MoV 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	≥800	≥600	≥14	≥40	245~290	Ku ≥27

21Cr12MoV Corresponding Standards(Same grade name, different standards)

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