12Cr1MoVG A31128 - GB 5310-1995

Grade	12Cr1MoVG
China ISC	A31128
Corresponding Standard	GB 5310-1995 Seamless Steel Tubes and Pipes for High Pressure Boiler
Classification	Alloy Steel

12Cr1MoVG Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni ^①	Cu ^①	Mo	V
Minimum Value	0.08	0.17	0.4	-	-	0.9	-	-	0.25	0.15
Maximum Value	0.15	0.37	0.7	0.03	0.03	1.2	0.3	0.2	0.35	0.3

• Steel produced by oxygen converter and secondary refining outside the furnace has a nitrogen content not exceeding 0.008%

12Cr1MoVG Mechanical Properties

	Heat Treatment or Condition	Tensile Strength σ_b Mpa	Yield Point σ_s Mpa	Elongation or Extension Rate δ %	Impact Energy Absorption KV2 J
Longitudinal	Normalizing + Tempering Quenching + Tempering	470~640	≥255	≥21	≥35
Transverse	Normalizing + Tempering Quenching + Tempering	≥440	≥255	≥19	≥27

12Cr1MoVG Corresponding Standards(Same grade name, different standards)

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