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Mat.No. 1.2838/DIN 145V33
Designation by Standards
| Mat. No. | DIN | EN | AISI |
| 1.2838 | 145V33 | - | - |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 1.45 | 0.28 | 0.40 | - | - | - | 3.25 | - | - |
Applications
Dies and tools for cold and hot forging, upsetting, deep drawing, one-part nuts, stamps.
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.80
Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100°C | 20-200°C | 20-300°C | 20-400°C | 20-500°C | 20-600°C | 20-700°C |
| 12.45 | 12.78 | 13.3 | 13.78 | 14.12 | 14.50 | 14.73 |
Soft AnnealingHeat to 720-760°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 230.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx. 650°C, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Harden from a temperature of 800-880, 840-950°C followed by water or oil quenching. Hardness after quenching is 64 HRC.
Tempering
Tempering temperature: 200-350°C (quenching in water), 180-300°C (quenching in oil). Average hardness after tempering is 56-62 HRC.
Tempering Temperature (°C) vs. Hardness (HRC)
| 100°C | 200°C | 300°C | 400°C |
| 66 | 62 | 58.5 | 50.5 |
Forging
Hot forming temperature: 1100-900°C.
Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes. There is no representation that the recipient of this literature will receive updated editions as it becomes available.
Designation by Standards
| Mat. No. | DIN | EN | AISI |
| 1.2838 | 145V33 | - | - |
Chemical Composition (in weight %)
| C | Si | Mn | Cr | Mo | Ni | V | W | Others |
| 1.45 | 0.28 | 0.40 | - | - | - | 3.25 | - | - |
Applications
Dies and tools for cold and hot forging, upsetting, deep drawing, one-part nuts, stamps.
Physical properties (average values) at ambient temperature
Modulus of elasticity [103 x N/mm2]: 210
Density [g/cm3]: 7.80
Coefficient of Linear Thermal Expansion 10-6 oC-1
| 20-100°C | 20-200°C | 20-300°C | 20-400°C | 20-500°C | 20-600°C | 20-700°C |
| 12.45 | 12.78 | 13.3 | 13.78 | 14.12 | 14.50 | 14.73 |
Soft AnnealingHeat to 720-760°C, cool slowly in furnace. This will produce a maximum Brinell hardness of 230.
Stress Relieving
Stress relieving to remove machining stresses should be carried out by heating to approx. 650°C, holding for 1-2 hours at heat, followed by air cooling. This operation is performed to reduce distortion during heat treatment.
Hardening
Harden from a temperature of 800-880, 840-950°C followed by water or oil quenching. Hardness after quenching is 64 HRC.
Tempering
Tempering temperature: 200-350°C (quenching in water), 180-300°C (quenching in oil). Average hardness after tempering is 56-62 HRC.
Tempering Temperature (°C) vs. Hardness (HRC)
| 100°C | 200°C | 300°C | 400°C |
| 66 | 62 | 58.5 | 50.5 |
Forging
Hot forming temperature: 1100-900°C.
Disclaimer
The information and data presented herein are typical or average values and are not a guarantee of maximum or minimum values. Applications specifically suggested for material described herein are made solely for the purpose of illustration to enable the reader to make his own evaluation and are not intended as warranties, either express or implied, of fitness for these or other purposes. There is no representation that the recipient of this literature will receive updated editions as it becomes available.
