Grades | Tool Die Steels | 1.2378
DIN 1.2378
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1.2378 Application:High alloyed CrVMo steel
Chemical composition(mass fraction)(wt.%) of the 1.2378
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 2.15 | 2.30 | ||
| Si | 0.15 | 0.30 | ||
| Mn | 0.25 | 0.40 | ||
| P | - | 0.035 | ||
| S | - | 0.035 | ||
| Cr | 12.00 | 13.00 | ||
| Mo | 0.80 | 1.00 | ||
| V | 2.00 | 2.30 |
Mechanical properties of grade 1.2378
| Yield Rp0.2 (MPa) |
Tensile Rm (MPa) |
Impact KV (J) |
Elongation A (%) |
Reduction in cross section on fracture Z (%) |
As-Heat-Treated Condition | HBW |
|---|---|---|---|---|---|---|
| 936 (≥) | 847 (≥) | 32 | 34 | 44 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 412 |
Physical properties of grade 1.2378
| Property | Density kg/dm3 |
Temperature T °C/F |
Specific heat J / kgK |
Thermal conductivity W/mK |
Electric resistance µΩ·cm |
|---|---|---|---|---|---|
| 981 (≥) | 155 (≥) | 31 | 21 | 42 | Solution and Aging, Annealing, Ausaging, Q+T,etc |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
- | - | - |
| 742 | 744 | 954 | - | - | - |
1.2378 Range of products
| 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 |