12CrMoG A30120 - GB 5310-1995

Grade	12CrMoG
China ISC	A30120
Corresponding Standard	GB 5310-1995 Seamless Steel Tubes and Pipes for High Pressure Boiler
Classification	Alloy Steel

12CrMoG Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni ^①	Cu ^①	Mo
Minimum Value	0.08	0.17	0.4	-	-	0.4	-	-	0.4
Maximum Value	0.15	0.37	0.7	0.03	0.03	0.7	0.3	0.2	0.55

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

12CrMoG 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
Normalizing + Tempering:	410~560	≥205	long. ≥21	long. ≥35 tr. ≥27

Approximate Comparison Table Seamless Steel Tubes and Pipes for High Pressure Boiler

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

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