AS 4140Enquiry|Print this page
| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | 4140 | AS | Australia |
Chemical composition%of the ladle analysis of grade4140
| C(％) | Si(％) | Mn(％) | P(％) | Cr(％) | Mo(％) |
|---|---|---|---|---|---|
| 0.38-0.43 | 0.10-0.35 | 0.75-1.00 | 0.040 0.040 | 0.80-1.10 | 0.15-0.25 |
| 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) |
|---|---|---|---|---|---|---|
| 111(≥) | 185(≥) | 22 | 12 | 42 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 232 |
| 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 |
|---|---|---|---|---|---|---|---|
| 824(≥) | 744(≥) | 24 | 43 | 31 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 222 | |
| Temp. °C/°F | Creep strain limit (10000h) (Rp1,0)N/mm2 | Creep rupture strength (10000h) (Rp1,0)N/mm2 | |||||
| 293 | 615 | 792 |
| 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 S41400 | AS | Australia | Stainless Steel Bars and Shapes |
| A 314 S41400 | AS | Australia | Stainless Steel Billets and Bars for Forging |
| A 473 S41400 | AS | Australia | Stainless Steel Forgings |
| A 580 S41400 | AS | Australia | Stainless Steel Wire |
| S41400 | AS | Australia | Martensitic Chromium Stainless Steel |
| NV7(4140) | AS | Australia | Steel for intake valves |
| H41400 | AS | Australia | Steel for intake valves |