High quality special steel supplier.Old rev.
  • Certified Company

    DNV&ABS
  • Certified Company

    ISO 9001:2008
  • R&D Production

    In China

21-4N + Nb + W


21-4N + Nb + W material is UNS SAE J 775 (2004) Engine poppet valve information report Engine poppet valve information report.

Chemical composition of 21-4N + Nb + W, 21-4N + Nb + W mechanical properties, 21-4N + Nb + W datasheet, 21-4N + Nb + W equivalent grade, Heat treatment and temperature process of 21-4N + Nb + W.


21-4N + Nb + W property sheet

21-4N + Nb + W Spec.

UNS SAE J 775 (2004)
Engine poppet valve information report

Chemical Composition of 21-4N + Nb + W

C: Max 0.05
Si: Max 0.20
Mn: Max 0.50
P: Max Min
S: Max Min
Ni: Max remaining
Cr: 15.00 17.00
Al: 4.00 5.00
Cu: Max Min
Ti: Max 0.50
Fe: 2.00 4.00
N: Max Min
Mo: Max 0.50
B: Max 0.006
Zr: Max 0.05

Mechanical Properties of 21-4N + Nb + W

Rp0.2 (MPa) 729 (≥)
Rm (MPa) 739 (≥)
AKV (J) 22
A (%) 33
Z (%) 31
Hardness HBW 322

21-4N + Nb + W shape and dimensions

21-4N + Nb + W Round bar: 1mm-800mm
21-4N + Nb + W Square bar: 10mm * 10mm-600mm *600mm
21-4N + Nb + W Flat bar: Thickness:8mm-800mm Width:10mm to 1500mm
21-4N + Nb + W Sheet or Plate: Thickness:3mm-80mm Width:1.5mm to 1500mm
21-4N + Nb + W Strip or Coil: Thickness:0.1mm-3mm Width:1.5mm-1500mm
21-4N + Nb + W Forgings: Shafts with flanks/pipes/tubes/slugs/donuts/cubes/other shapes