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DIN 1.2745 Details
DIN 1.2745 Standard Download
1.2745 Application:Alloyed NiCr steel
| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Tool Die Steels | 1.2745 | Germany - DIN , |
Chemical composition(wt.%) of 1.2745 grade:
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.10 | 0.17 | ||
| Si | 0.20 | 0.30 | ||
| Mn | 0.30 | 0.50 | ||
| P | - | 0.030 | ||
| S | - | 0.030 | ||
| Cr | 0.90 | 1.20 | ||
| Mo | - | - | ||
| V | - | - | ||
| Ni | 4.20 | 4.70 |
Mechanical properties of grade 1.2745
| 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) |
|---|---|---|---|---|---|---|
| 699 (≥) | 645 (≥) | 42 | 23 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 122 |
Physical properties of grade 1.2745
| 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 |
|---|---|---|---|---|---|---|---|
| 342 (≥) | 737 (≥) | 12 | 11 | 13 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 412 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 381 | 314 | 117 |
1.2745 - Form of Supply
| 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 |
Cross Reference Table(Equivalent Grade)
| Grade | Standard | Country | Application |
|---|---|---|---|
| 1.2745 | DIN | Germany | Alloyed NiCr steel |
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