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Description

HF-70 Carbon Steel and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Carbon Steel: HF-70

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

C
Si
Mn
P
S
Cr Ni
 0.15    1.4        
Mo Al Cu Nb Ti V Ce
             
N Co Pb B Other    
    ≥0.005         
             

Mechanical Properties of steel grade HF-70

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)
383 (≥) 487 (≥) 33 44 32 Solution and Aging, Annealing, Ausaging, Q+T,etc 322

Physical Properties of steel grade HF-70

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
14 - -     0.23 -  
238 512 - 13.3 422   -  
856 - 13 24.2   244 334

Heat Treatment of steel grade HF-70

Heat treated : 1845°C - 1986°C

Technological Curves of steel grade HF-70


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