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Description

HEV7 High Alloy and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:High Alloy: HEV7
Category Type Steel Grade Standard Country Application
Steel GradesHigh Alloy HEV7
HEV2
N07002
N07750
HEV3
N07751
N07031
HEV5
N07080
HEV6
N07090

Chemical composition(mass fraction)(wt.%) of the HEV7

C
Si
Mn
P
S
Cr Ni
0.08 0.70 1.50     14.75 26.0
Mo Al Cu Nb Ti V Ce
1.25 0.35     2.00 0.30  
N Co Pb B Other trade names  
      0.003   A-286  
             

Mechanical Properties of steel grade HEV7

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)
836 (≥) 356 (≥) 32 24 41 Solution and Aging, Annealing, Ausaging, Q+T,etc 433

Physical Properties of steel grade HEV7

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 - -     0.12 -  
583 175 - 22.3 323   -  
889 - 13 11.2   224 414

Heat Treatment of steel grade HEV7

Heat treated : 1533°C - 1546°C

Technological Curves of steel grade HEV7

Cross Reference Table (Equivalent Grade) of HEV7

Grade Standard Country Application
SAE HEV7 SAE USA precipitation hardening

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