1.2311, 40CrMnMoS8-6, 1.2312, 40CrMnMoS8-6, P20, 40CMD8 plastic mould tool steels, suitable to operate in high temperature, used mainly for plastic moulds, hydroforming tools and frames for plastic pressure dies. They are highly hardenable, resistant to tempering and strong in high temperature.
1.2311, 1.2312, 40CrMnMo7, 40CrMnMoS8-6, P20+S, UNS T51620, P20, 40Ch2GM, 35CrMo8, 40CMD8, F-5302, A681, 40Х2ГМ
| Category | Type | Grade | Designations |
|---|---|---|---|
| Grades | Tool Die Steels | 1.2311,40CrMnMoS8-6,1.2312,P20,40CMD8 | Germany - DIN , DIN 17350 (1980) | |
| Elements | Min.（≥） | Max.（≤） | Similar | Remarks |
|---|---|---|---|---|
| C | 0.35 | 0.45 | ||
| Si | 0.30 | 0.50 | ||
| Mn | 1.40 | 1.60 | ||
| P | - | 0.030 | ||
| S | 0.05 | 0.10 | ||
| Cr | 1.80 | 2.00 | ||
| Mo | 0.15 | 0.25 | ||
| V | - | - |
| 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) |
|---|---|---|---|---|---|---|
| 396 (≥) | 248 (≥) | 24 | 42 | 41 | 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 |
|---|---|---|---|---|---|---|---|
| 872 (≥) | 434 (≥) | 24 | 34 | 14 | Solution and Aging, Annealing, Ausaging, Q+T,etc | 431 | |
| Temp. °C/°F |
Creep strain limit (10000h) (Rp1,0) N/mm2 |
Creep rupture strength (10000h) (Rp1,0) N/mm2 |
|||||
| 217 | 728 | 585 |
| 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 |
|---|---|---|---|
| 1.2311 | DIN | Germany | Heat resistant materials for the extrusion processing of aluminum and aluminum alloys |
| 1.2311,40CrMnMoS8-6,1.2312,P20,40CMD8 | DIN | Germany | Tool Steels; Technical Conditions of Delivery |
| 40CrMnMoS8-6 | DIN | Germany | Tool Steels; Technical Conditions of Delivery |
| 1.2312 | DIN | Germany | Tool Steels; Technical Conditions of Delivery |
| P20 | ASTM | USA | Mold Steel |
