25MnG U50257 - GB 5310-1995

Grade	25MnG
China ISC	U50257
Corresponding Standard	GB 5310-1995 Seamless Steel Tubes and Pipes for High Pressure Boiler
Classification	Carbon Steel

25MnG Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr ^①	Ni ^①	Cu ^①	Mo ^①	V ^①
Minimum Value	0.22	0.17	0.7	-	-	-	-	-	-	-
Maximum Value	0.3	0.37	1	0.03	0.03	0.25	0.25	0.2	0.15	0.08

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

25MnG 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	≥485	≥275	long. ≥20	long. ≥35 tr. ≥27

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

25MnG Corresponding Standards(Same grade name, different standards)

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