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) | 537 (≥) | 
| Rm (MPa) | 926 (≥) | 
| AKV (J) | 21 | 
| A (%) | 22 | 
| Z (%) | 41 | 
| Hardness | HBW 114 | 
| 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 |