GBT 40BEnquiry|Print this page
| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | 40B | GBT | China |
Chemical composition%of the ladle analysis of grade40B
| 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) |
|---|---|---|---|---|---|---|
| 913(≥) | 621(≥) | 43 | 14 | 32 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 224 |
| 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 |
|---|---|---|---|---|---|---|---|
| 245(≥) | 864(≥) | 31 | 31 | 33 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 434 | |
| Temp. °C/°F | Creep strain limit (10000h) (Rp1,0)N/mm2 | Creep rupture strength (10000h) (Rp1,0)N/mm2 | |||||
| 595 | 345 | 323 |
| 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 |
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