20Mn U21202 - GB /T 699-2015

Grade	20Mn
China ISC	U21202
Corresponding Standard	GB /T 699-2015 Quality Carbon Structure Steels
Classification	Carbon Steel
Properties	Quench Hardness Carburizing Ability
Density	7.8 g/cm³

20Mn Chemical Element Composition Content (%)

Component	C	Si	Mn	P	S	Cr	Ni	Cu
Minimum Value	0.17	0.17	0.7	-	-	-	-	-
Maximum Value	0.23	0.37	1	0.035	0.035	0.25	0.3	0.25

20Mn 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
d=25 (Sample size)	Normalizing	≥450	≥275	≥24	≥50	Unprocessed Steel ≤197

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
20Mn (GB/T 699-2015)	U21202	1022 (ASTM A29/A29M:2005)	C20E4 (ISO 683-18:1996)	C22E (EN 10083-1:1991+A1:1996) (EN 10084:1998)	1.1151

3 Approximate Comparison Table High-Quality Carbon Structural Steel

4 Approximate Comparison Table Structural Alloy Steel

5 Approximate Comparison Table Structural Alloy Steel

6 Approximate Comparison Table Structural Alloy Steel

7 Approximate Comparison Table High-Quality Carbon Structural Steel

20Mn Corresponding Standards(Same grade name, different standards)

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