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| Category | Type | Steel grade | Country |
|---|---|---|---|
| Grades | Special Alloy | BP20 | UK |
Chemical composition % of the ladle analysis of grade BP20
| C(％) | Si(％) | Mn(％) | Cr(％) | Ni(％) | Mo(％) | Other(%) |
|---|---|---|---|---|---|---|
| 0.28-0.40 | 0.40-0.60 | 0.65-0.95 | 1.50-1.80 | ≤0.40 | 0.35-0.55 | Cu≤0.20,Sn≤0.05 |
| 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) |
|---|---|---|---|---|---|---|
| 665 (≥) | 185 (≥) | 22 | 43 | 21 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 331 |
| 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 |
|---|---|---|---|---|---|---|---|
| 852 (≥) | 813 (≥) | 33 | 21 | 43 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 142 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 468 | 723 | 153 |
| 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 |