U70MnSi

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China GB U70MnSi 铁路用热轧钢轨 and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: U70MnSi / U70MnSi

Category	Grade	Standard	Region/Area	Standard Content
Metals	U70MnSi	GB 2585	China	铁路用热轧钢轨

Chemical composition(mass fraction)(wt.%) of the U70MnSi

Element	Min	Max	Similar
C	0.6500	0.7700	-
Si	0.7000	1.1000	-
Mn	0.8000	1.2000	-
S	-	0.0400	-
P	-	0.0400	-
Cu	0.1000	0.4000	-

Mechanical Properties of steel grade U70MnSi

Yield R_p0.2 (MPa)	Tensile R_m (MPa)	Impact KV/Ku (J)	Elongation A (%)	Reduction in cross section on fracture Z (%)	As-Heat-Treated Condition	Brinell hardness (HBW)
317 (≥)	261 (≥)	33	21	43	Solution and Aging, Annealing, Ausaging, Q+T,etc	442

Physical Properties of steel grade U70MnSi

Temperature (°C)	Modulus of elasticity (GPa)	Mean coefficient of thermal expansion 10-6/(°C) between 20(°C) and	Thermal conductivity (W/m·°C)	Specific thermal capacity (J/kg·°C)	Specific electrical resistivity (Ω mm²/m)	Density (kg/dm³)	Poisson’s coefficient, ν
32	-	-			0.13	-
871	422	-	24.3	441		-
139	-	41	23.2			314	322

Heat Treatment of steel grade U70MnSi

Heat treated : 1653°C - 1551°C

Technological Curves of steel grade U70MnSi

No Curve

Cross Reference Table (Equivalent Grade) of U70MnSi

Grade	Standard	Country	Application
ASTM 5140
AISI 201
AISI 202
1.2767
17-4PH
AISI 1052
AISI 416Se
AISI 1330
AISI 205 Stainless Steel
AISI A10
AISI A2
AISI A3
AISI A4
1.0036
1.0037
SAE J403
UNS G10100
AMS 4924
ASTM A36
Electrode 100S-1

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