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America SAE NV2 Engine poppet valve information report and Mechanical Properties, Chemical Element, Cross Reference.

Datasheet for: Metals: NV2 / NV 2
Category Grade Standard Region/Area Standard Content
Metals NV 2 SAE J 775 America Engine poppet valve information report

Chemical composition(mass fraction)(wt.%) of the NV 2

Element Min Max Similar

Mechanical Properties of steel grade NV 2

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)
145 (≥) 249 (≥) 21 23 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 424

Physical Properties of steel grade NV 2

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
12 - -     0.22 -  
134 676 - 23.3 432   -  
578 - 22 41.2   131 214

Heat Treatment of steel grade NV 2

Heat treated : 1531°C - 1522°C

Technological Curves of steel grade NV 2

Cross Reference Table (Equivalent Grade) of NV 2

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