20CrMoA - DL /T 439-2018

Grade	20CrMoA
Corresponding Standard	DL /T 439-2018 The technical guide for high-temperature bolt of fossil-fired power plant
Classification	Alloy Steel

20CrMoA Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Mo
Minimum Value	0.17	0.17	0.4	-	-	0.8	-	0.15
Maximum Value	0.24	0.37	0.7	0.035	0.035	1.1	0.3	0.25

20CrMoA 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	≥637	≥490	≥14	≥40	197~241	Ku ≥55

20CrMoA Corresponding Standards(Same grade name, different standards)

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