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Description

USA UNS EV7 Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: EV7
Category Class Grade Standard Country Application
Steel GradesSpecialsteel EV7 UNS USA Steel for exhaust valves

Chemical composition(mass fraction)(wt.%) of the EV7

C Si Mn Cr Ni N
0.20 - ≥ 0.50 - ≥ 5.00 - ≥ 21.0 - ≥ 4.50 - ≥ 0.30 - ≥

Mechanical Properties of steel grade EV7

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)
679 (≥) 348 (≥) 31 13 14 Solution and Aging, Annealing, Ausaging, Q+T,etc 142

Physical Properties of steel grade EV7

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 - -     0.44 -  
812 885 - 11.3 314   -  
568 - 44 11.2   233 321

Heat Treatment of steel grade EV7

Heat treated : 1597°C - 1273°C

Technological Curves of steel grade EV7

Cross Reference Table (Equivalent Grade) of EV7

Grade Standard Country Application
EV7
HEV7
SAE EV7
SAE EV7
SAE HEV7
SAE HEV7
S63007
UNS S63007
UNS S63007

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