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| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | 40B | GBT | China |
Chemical composition % of the ladle analysis of grade 40B
| C(％) | Si(％) | Mn(％) | B(%) |
|---|---|---|---|
| 0.37-0.44 | 0.17-0.37 | 0.60-0.90 | 0.0005-0.0035 |
| 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) |
|---|---|---|---|---|---|---|
| 729 (≥) | 827 (≥) | 21 | 14 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 221 |
| 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 |
|---|---|---|---|---|---|---|---|
| 747 (≥) | 848 (≥) | 34 | 21 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 323 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 747 | 329 | 373 |
| 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 |
|---|---|---|---|
| A 276 S44003 | GBT | China | Stainless Steel Bars and Shapes |
| A 314 S44003 | GBT | China | Stainless Steel Billets and Bars for Forging |
| A 473 S44003 | GBT | China | Stainless Steel Forgings |
| A 580 S44003 | GBT | China | Stainless Steel Wire |
| S44003 | GBT | China | Hardenable Chromium Stainless Steel |
| SUS 440B | GBT | China | Stainless steel bars |
| STS440B | GBT | China | Stainless steel bars |
| 440B | GBT | China | Stainless steel bars |
| ASTM440B | GBT | China | ASTM440B |
| AISI440B | GBT | China | AISI440B |