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Specifications
Description:
Mat.No. 1.2767, DIN X45NiCrMo4
Designation by Standards
| Mat. No. | DIN | EN | AISI |
| 1.2767 | X45NiCrMo4 | 40NiCrMoV16 | - |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 0.45 | 0.25 | 0.35 | 1.35 | 0.25 | 4.05 | - | - | - |
Description:
Nickel cold work tool steel. Good hardenability and toughness. Ability for polishing, photoetching and erosion treatment.
Applications:
Forging tools, dies of all sort, shapes and sizes, hot forging and pressing tools for steel and metal. Moulds, bushings, piercers, etc.
Physical properties (average values) at ambient temperature
Density [g/cm3]: 7.84
Thermal conductivity [W/m.K]: 28.0
Coefficient of Linear Thermal Expansion 10ˉ6 oCˉ1
| 20-100°C | 20-200°C | 20-300°C | 20-400°C | 20-500°C | 20-600°C |
| 11.7 | 12.5 | 13.0 | 13.4 | 13.7 | 13.8 |
Soft Annealing:
Heat to 610-850°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 262.
Stress Relieving:
Stress relieving to remove machining stresses should be carried out by heating to 650°C, holding for one hour at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening:
Harden from a temperature of 840-870°C followed by oil. air or warm bath (180-220°C) quenching. Hardness after quenching is 56 HRC.
Tempering:
Tempering temperature: 150-400°C.
Tempering Temperature (°C) vs. Hardness (HRC)
| 100°C | 200°C | 300°C | 400°C | 500°C | 600°C |
| 56 | 54 | 50 | 46 | 42 | 38 |
| Item | Dimension (mm) | Process | Delivery condition |
| Round Bar | DIA1.0 - 30 | Cold-drawing / Centerless grinding | Bright & Anneal |
| DIA20 - 80 | Peeling | Bright & Anneal | |
| DIA 13-180 | Hot Rolled | Black surface & Anneal | |
| DIA 70 - 400 | Hot Rolled&Hot Forged | Black surface & Anneal | |
| Flat Bar | T 3.0-20 X W 20-100 | Hot Rolled | Black surface & Anneal |
| Block | T 20-200 X 300-800 | Hot Rolled & Hot Forged | Black surface /Machine & Anneal |
| Wire Rod | DIA 5.5 - 13 | Hot Rolled | Black surface & Anneal |
| Sheets | T1.0 - 2.5 | Cold Rolled | Black surface & Anneal |
| T 2.5 - 8.0 | Hot Rolled | Black surface & Anneal |
