45 - DL /T 439-2018

Grade	45
Corresponding Standard	DL /T 439-2018 The technical guide for high-temperature bolt of fossil-fired power plant
Classification	Carbon Steel

45 Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni
Minimum Value	0.42	0.17	0.5	-	-	-	-
Maximum Value	0.5	0.37	0.8	0.035	0.035	0.25	0.25

45 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	≥353	≥16	≥40	187~229	Ku ≥39

45 Corresponding Standards(Same grade name, different standards)

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