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Description

Spain UNE C70U Spain structural alloy steel and C70U Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Tool Steel And Hard Alloy: C70U
Category Type Steel Grade Standard Country Application
Steel GradesTool Steel And Hard Alloy C70U UNE Spain Spain structural alloy steel
Rp10
Rp11
RUL1
RU12
RU11v
RU12v
RU13v
55SiMoX
C51U
C61U

Chemical composition(mass fraction)(wt.%) of the C70U

C(%) Si(%) Mn(%) P(%) S(%) Cr(%) Ni(%)
0.6S~0.74 0.15-0.35 0.15-0.35 0.02S 0.020 Max 0.25 Max 0.25

Mechanical Properties of steel grade C70U

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)
967 (≥) 177 (≥) 13 42 13 Solution and Aging, Annealing, Ausaging, Q+T,etc 213

Physical Properties of steel grade C70U

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
11 - -     0.43 -  
348 976 - 31.3 423   -  
638 - 42 22.2   142 144

Heat Treatment of steel grade C70U

Heat treated : 1231°C - 1652°C

Technological Curves of steel grade C70U

Cross Reference Table (Equivalent Grade) of C70U

Grade Standard Country Application
C70U ISO ISO Carbide for cutting tools
C70U ISO ISO Carbide for cutting tools
C70U UNE Spain Spain structural alloy steel
EN C70U EN Euronorm Euronorm Tool steel

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