Available 24/7 at contact@steel-grades.com

NV7(4140)

Description

USA UNS NV7(4140) Specialsteel Steel for intake valves and Mechanical Properties, Chemical Element, Cross Reference, Datasheet.

Datasheet for: Steel Grades:Specialsteel: NV7(4140)
Category Class Grade Standard Country Application
Steel GradesSpecialsteel NV7(4140) UNS USA Steel for intake valves

Chemical composition(mass fraction)(wt.%) of the NV7(4140)

C Si Mn P S Cr Mo
0.37 -0.44 0.15 -0.35 0.65 -1.10 ≤0.035 ≤ 0.04 0.75 -1.20 0.15 -0.25

Mechanical Properties of steel grade NV7(4140)

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)
676 (≥) 755 (≥) 14 34 24 Solution and Aging, Annealing, Ausaging, Q+T,etc 132

Physical Properties of steel grade NV7(4140)

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
21 - -     0.44 -  
732 366 - 31.3 312   -  
383 - 43 42.2   142 333

Heat Treatment of steel grade NV7(4140)

Heat treated : 1819°C - 1246°C

Technological Curves of steel grade NV7(4140)

Cross Reference Table (Equivalent Grade) of NV7(4140)


Available Suppliers

Our main peoducts of steel are many kinds of special steel, like tool steel, mould steel, alloy steel, alloy constructural steel, heat-resistant steel, high speed tool steel,spring steel and bearing steel , stainless steel and so on, which have formed 12 series and more than 350 varieties with n...

Rfq.: sales@longhaisteel.com
  • Do you supply this NV7(4140)?
  • List your company on S&G now? Join
  • Non-paying users only
Top