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UNS HS 556 Details
Iron Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05La - 0.20N Solution Heat Treated
UNS HS 556 Standard Download
HS 556 Datasheet
UNS HS 556| Category | Type | Grade | Microstructure | Designations |
|---|---|---|---|---|
| Grades | Stainless Steels | HS 556 | Precipitation-Hardening | USA - UNS , SAE AMS 5877B (2002) - Iron Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05La - 0.20N Solution Heat Treated |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.05 | 0.15 | ||
| Si | 0.20 | 0.80 | ||
| Mn | 0.50 | 2.00 | ||
| Ni | 19.00 | 22.50 | ||
| Cr | 21.00 | 23.00 | ||
| Al | 0.10 | 0.50 | ||
| Cu | - | - | ||
| Ti | - | - | ||
| Fe | - | remaining | ||
| Mo | 2.50 | 4.00 | ||
| Co | 16.00 | 21.00 | ||
| W | 2.00 | 3.50 |
| Proof strength Rp0.2 (MPa) |
Tensile strength Rm (MPa) |
Impact energy KV (J) |
Elongation at fracture A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | Brinell hardness (HBW) |
|---|---|---|---|---|---|---|
| 234 (≥) | 558 (≥) | 21 | 34 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 241 |
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
Modulus of elasticity kN/mm2 |
Expansion rate |
|---|---|---|---|---|---|---|---|
| 848 (≥) | 251 (≥) | 14 | 41 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 243 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 557 | 513 | 366 |
| 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 |
| Grade | Standard | Country | Application |
|---|---|---|---|
| HS-21 | UNS | USA | Special Purpose Alloys ("Superalloys") |
| HS-31 | UNS | USA | Special Purpose Alloys ("Superalloys") |
| HS 556 | ASTM | USA | Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05Zr - 0.05La - 0.20N Solution Heat Treated |
| HS 556 | ASTM | USA | Iron Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05La - 0.20N Solution Heat Treated |
| HS 556 | ASTM | USA | Alloy, Corrosion and Heat-Resistant, Welding Wire 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta 0.30Al - 0.05Zr - 0.05La - 0.20N |
| HS 556 | UNS | USA | Alloy, Corrosion and Heat-Resistant, Sheet, Strip, and Plate 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05Zr - 0.05La - 0.20N Solution Heat Treated |
| HS 556 | UNS | USA | Iron Alloy, Corrosion and Heat-Resistant, Bars, Forgings, and Rings 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta - 0.30Al - 0.05La - 0.20N Solution Heat Treated |
| HS 556 | UNS | USA | Alloy, Corrosion and Heat-Resistant, Welding Wire 29Fe - 22Cr - 21Ni - 18.5Co - 3.2Mo - 2.8W - 0.78Ta 0.30Al - 0.05Zr - 0.05La - 0.20N |
| HS 25 | AMS | USA | Cobalt Alloy, Corrosion and Heat-Resistant, Welding Wire, 52Co - 20Cr - 10Ni - 15W |
| Alloy L605 | AMS | USA | Cobalt Alloy, Corrosion and Heat-Resistant, Welding Wire, 52Co - 20Cr - 10Ni - 15W |
| R30605 | UNS | USA | Co-Cr-Ni-W alloy |