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B.S. 301S81 Details
Specification for stainless steel wire for mechanical springs
B.S. 301S81 Standard Download
301S81 Datasheet
B.S. 301S81| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Stainless Steels | 301S81 | UK - B.S. , BS 2056 - Specification for stainless steel wire for mechanical springs |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | - | 0.09 | ||
| Si | - | 1.00 | ||
| Mn | - | 1.00 | ||
| P | - | 0.045 | ||
| S | - | 0.030 | ||
| Cr | 16.00 | 18.00 | ||
| Mo | - | - | ||
| Ni | 6.50 | 7.75 | ||
| Al | 0.75 | 1.50 |
| 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) |
|---|---|---|---|---|---|---|
| 725 (≥) | 842 (≥) | 41 | 21 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 323 |
| 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 |
|---|---|---|---|---|---|---|---|
| 279 (≥) | 739 (≥) | 21 | 34 | 34 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 113 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 745 | 345 | 515 |
| 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 |
|---|---|---|---|
| 301S81 | B.S. | UK | Specification for stainless steel wire for mechanical springs |