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B.S. HR240 Details
B.S. HR240 Standard Download
| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Stainless Steels | HR240 | UK - B.S. , BS HR 240 (1972) - Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy plate, sheet and strip (cobalt base Cr 20, W 15, Ni 10, Mn 1.5) BS 2HR 240 (2011) - Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy plate, sheet and strip (cobalt base Cr 20, W 15, Ni 10, Mn 1.5) |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.05 | 0.15 | ||
| Si | - | 0.40 | ||
| Mn | 1.00 | 2.00 | ||
| P | - | 0.040 | ||
| S | - | 0.030 | ||
| Cr | 19.00 | 21.00 | ||
| Ni | 9.00 | 11.00 | ||
| Mo | - | - | ||
| Co | - | remaining | ||
| Ti | - | - | ||
| Fe | - | 3.00 | ||
| W | 14.00 | 16.00 |
| 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) |
|---|---|---|---|---|---|---|
| 395 (≥) | 785 (≥) | 24 | 23 | 23 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 332 |
| 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 |
|---|---|---|---|---|---|---|---|
| 389 (≥) | 137 (≥) | 23 | 13 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 143 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 247 | 929 | 965 |
| 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 |
|---|---|---|---|
| HR240 | B.S. | UK | Specification for cobalt-chromium-tungsten-nickel-manganese heat-resisting alloy plate, sheet and strip (cobalt base Cr 20, W 15, Ni 10, Mn 1.5) |