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Description

USA UNS NV8 Specialsteel Steel for intake valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: NV8
Category Class Grade Standard Country Application
Steel GradesSpecialsteel NV8 UNS USA Steel for intake valves

Chemical composition(mass fraction)(wt.%) of the NV8

C Si Mn P S Cr Ni Mo Cu
0.35 -0.45 3.60 -4.20 0.20 -0.40 ≤0.030 ≤ 0.04 1.85 -2.50 ≤0.10 ≤O.25 ≤0.25

Mechanical Properties of steel grade NV8

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)
291 (≥) 247 (≥) 14 12 31 Solution and Aging, Annealing, Ausaging, Q+T,etc 131

Physical Properties of steel grade NV8

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
22 - -     0.31 -  
828 476 - 43.3 232   -  
477 - 13 44.2   432 322

Heat Treatment of steel grade NV8

Heat treated : 1199°C - 1128°C

Technological Curves of steel grade NV8

Cross Reference Table (Equivalent Grade) of NV8

Grade Standard Country Application
NV8
HNV8
SAE NV8
SAE NV8
SAE HNV8
SAE HNV8

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