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Description

USA UNS HEV8 Specialsteel Steel for exhaust valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: HEV8
Category Class Grade Standard Country Application
Steel GradesSpecialsteel HEV8 UNS USA Steel for exhaust valves

Chemical composition(mass fraction)(wt.%) of the HEV8

C Si Mn P S Cr Ni Mo
0.03 -0.06 ≤0.20 ≤0.20 ≤0.015 ≤0.015 22.3 -22.9 55.0 -58.0 1.70 -2.30

Mechanical Properties of steel grade HEV8

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)
846 (≥) 455 (≥) 42 24 21 Solution and Aging, Annealing, Ausaging, Q+T,etc 341

Physical Properties of steel grade HEV8

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
24 - -     0.43 -  
641 318 - 44.3 322   -  
669 - 32 12.2   213 323

Heat Treatment of steel grade HEV8

Heat treated : 1689°C - 1884°C

Technological Curves of steel grade HEV8

Cross Reference Table (Equivalent Grade) of HEV8

Grade Standard Country Application
HEV8
SAE HEV8
SAE HEV8
N07032
UNS N07032
UNS N07032

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