AISI CU-4Enquiry|Print this page
| Category | Type | Steel grade | Standard | Country |
|---|---|---|---|---|
| Grades | Special Alloy | CU-4 | AISI | USA |
Chemical composition%of the ladle analysis of gradeCU-4
| C(％) | W(%) | Co(%) | Nb(%) | Ta(%) |
|---|---|---|---|---|
| 4.7 | 71.7 | 20.0 | 0.9 | 2.7 |
Density / (g/cm ^ 3) : 13.40
Hardness HRC: 86.5
σ bb/MPa: 2670
Grain size/μ m: 1 ~ 3
Use for example: can be used in the manufacture of medium and strong impact under the mould
| 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) |
|---|---|---|---|---|---|---|
| 416(≥) | 929(≥) | 14 | 44 | 43 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 322 |
| 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 |
|---|---|---|---|---|---|---|---|
| 514(≥) | 322(≥) | 14 | 13 | 32 | Solution and Aging,Annealing,Ausaging,Q+T,etc | 443 | |
| Temp. °C/°F | Creep strain limit (10000h) (Rp1,0)N/mm2 | Creep rupture strength (10000h) (Rp1,0)N/mm2 | |||||
| 697 | 594 | 988 |
| 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 |