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NV7(4140)


NV7(4140) material is Steel for intake valves.

Chemical composition of NV7(4140), NV7(4140) mechanical properties, NV7(4140) datasheet, NV7(4140) equivalent grade, Heat treatment and temperature process of NV7(4140).


NV7(4140) property sheet

NV7(4140) Spec.

Chemical Composition of NV7(4140)

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

Mechanical Properties of NV7(4140)

Rp0.2 (MPa) 938 (≥)
Rm (MPa) 669 (≥)
AKV (J) 14
A (%) 21
Z (%) 22
Hardness HBW 333

NV7(4140) shape and dimensions

NV7(4140) Round bar: 1mm-800mm
NV7(4140) Square bar: 10mm * 10mm-600mm *600mm
NV7(4140) Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
NV7(4140) Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
NV7(4140) Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
NV7(4140) Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes