Grades | Stainless Steels | 21-4N + Nb + W
UNS 21-4N + Nb + W ( Precipitation-Hardening )
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21-4N + Nb + W Application:Engine poppet valve information report
Elements | Min.(≥) | Max.(≤) | Similar | Remarks |
---|---|---|---|---|
C | - | 0.05 | ||
Si | - | 0.20 | ||
Mn | - | 0.50 | ||
P | - | - | ||
S | - | - | ||
Ni | - | remaining | ||
Cr | 15.00 | 17.00 | ||
Al | 4.00 | 5.00 | ||
Cu | - | - | ||
Ti | - | 0.50 | ||
Fe | 2.00 | 4.00 | ||
N | - | - | ||
Mo | - | 0.50 | ||
B | - | 0.006 | ||
Zr | - | 0.05 |
Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | HBW |
---|---|---|---|---|---|---|
684 (≥) | 335 (≥) | 24 | 13 | 22 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 343 |
Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
---|---|---|---|---|---|
864 (≥) | 515 (≥) | 11 | 31 | 11 | Solution and Aging, Annealing, Ausaging, Q+T,etc |
Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
- | - | - |
236 | 718 | 464 | - | - | - |
Product type | Products | Dimension | Processes | Deliver Status |
---|---|---|---|---|
Plates / Sheets | Plates / Sheets | 0.08-200mm(T)*W*L | Forging, hot rolling and cold rolling | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Steel Bar | Round Bar, Flat Bar, Square Bar | Φ8-1200mm*L | Forging, hot rolling and cold rolling, Cast | Black, Rough Turning, Shot Blasting, |
Coil / Strip | Steel Coil /Steel Strip | 0.03-16.0x1200mm | Cold-Rolled & Hot-Rolled | Annealed, Solution and Aging, Q+T, ACID-WASHED, Shot Blasting |
Pipes / Tubes | Seamless Pipes/Tubes, Welded Pipes/Tubes | OD:6-219mm x WT:0.5-20.0mm | Hot extrusion, Cold Drawn, Welded | Annealed, Solution and Aging, Q+T, ACID-WASHED |