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70Mn

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65Mn U20080
#70Mn

Description

China GBT 70Mn China structural steel and alloy steel and 70Mn Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Structure Steel: 70Mn
Category Type Steel Grade Standard Country Application
Steel GradesStructure Steel 70Mn GBT China China structural steel and alloy steel
15Mn
20Mn
25Mn
30Mn
35Mn
40Mn
45Mn
50Mn
60Mn
65Mn

Chemical composition(mass fraction)(wt.%) of the 70Mn

C(％) Si(％) Mn(％) P(％) S(％) Cr(％) Ni(％) Cu(%)
0.67-0.75 0.17-0.37 0.90-1.20 0.035 0.035 0.25 0.3 0.25

Mechanical Properties of steel grade 70Mn

Yield
Rp0.2 (MPa)		 Tensile
Rm (MPa)		 Impact
KV/Ku (J)		 Elongation
A (%)		 Reduction in cross section on fracture
Z (%)		 As-Heat-Treated Condition Brinell hardness (HBW)
833 (≥) 196 (≥) 24 42 42 Solution and Aging, Annealing, Ausaging, Q+T,etc 333

Physical Properties of steel grade 70Mn

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
12 - -     0.42 -  
585 197 - 23.3 214   -  
278 - 42 42.2   441 413

Heat Treatment of steel grade 70Mn

Heat treated : 1659°C - 1318°C

Technological Curves of steel grade 70Mn

Cross Reference Table (Equivalent Grade) of 70Mn

Grade Standard Country Application
70Mn GBT China China structural steel and alloy steel
EN 70MnMoCr8 EN Euronorm Euronorm Tool steel
ZU70Mn GBT China Cast steel rolls
ZU70Mn2 GBT China Cast steel rolls
ZU70Mn2Mo GBT China Cast steel rolls
65Mn U20080
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Jiangyou Longhai Special Steel Co.,Ltd.

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

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