Certified Company
DNV&ABSCertified Company
DNV&ABSCertified Company
ISO 9001:2008R&D Production
In China21-4N + 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.
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 |
Rp0.2 (MPa) | 729 (≥) |
Rm (MPa) | 739 (≥) |
AKV (J) | 22 |
A (%) | 33 |
Z (%) | 31 |
Hardness | HBW 322 |
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 |