25Mn U21252 - GB /T 699-2015

Grade	25Mn
China ISC	U21252
Corresponding Standard	GB /T 699-2015 Quality Carbon Structure Steels
Classification	Carbon Steel
Properties	Impact Toughness Weldability Quench Hardness

25Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.22	0.17	0.7	-	-	-	-	-
Maximum Value	0.29	0.37	1	0.035	0.035	0.25	0.3	0.25

25Mn Mechanical Properties

diameter(thickness) d mm	Heat Treatment or Condition	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
d=25 (Sample size)	Normalizing + Quenching + Tempering	≥490	≥295	≥22	≥50	Unprocessed Steel ≤207	KU2 ≥71

1 Approximate Comparison Table High-Quality Carbon Structural Steel

2 Approximate Comparison Table High-Quality Carbon Structural Steel

China		United States	International Organization for Standardization	European Standard
GB	ISC	ASTM/AISI	ISO	EN	Numerical Grade
25Mn (GB/T 699-2015)	U21252	1026 (ASTM A29/A29M:2005)	C25E4 (ISO 683-18:1996)	C25E (EN 10083-1:1991+A1:1996) (EN 10084:1998)	1.1158

3 Approximate Comparison Table High-Quality Carbon Structural Steel

4 Approximate Comparison Table High-Quality Carbon Structural Steel

5 Approximate Comparison Table Structural Alloy Steel

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

Note: The data is for reference only! If you have any questions, please fill out "I want to correct it"!