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Description

USA UNS EV8 Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: EV8
Category Class Grade Standard Country Application
Steel GradesSpecialsteel EV8 UNS USA Steel for exhaust valves

Chemical composition(mass fraction)(wt.%) of the EV8

C Si Mn P S Cr Ni N
0.48 -0.58 ≤0.25 8.00 -10.0 ≤0.050 ≤0.035 20.0 -23.0 3.25 -4.50 0.38 -0.55

Mechanical Properties of steel grade EV8

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)
481 (≥) 926 (≥) 11 31 44 Solution and Aging, Annealing, Ausaging, Q+T,etc 134

Physical Properties of steel grade EV8

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
43 - -     0.33 -  
891 188 - 23.3 424   -  
514 - 11 14.2   112 341

Heat Treatment of steel grade EV8

Heat treated : 1316°C - 1916°C

Technological Curves of steel grade EV8

Cross Reference Table (Equivalent Grade) of EV8

Grade Standard Country Application
EV8
HEV8
SAE EV8
SAE EV8
SAE HEV8
SAE HEV8
S63008
UNS S63008
UNS S63008

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