– Pre Hardened –
VEGA 40
Pre hardened (40 HRC) modified tool steel for plastic applications with ESR properties. Better cleanliness, homogeneity and polishability than 2738 HH.
Chemical Composition
Special chemical composition.
Material Properties
- High hardness (Prehardened).
- Uniform hardness across the cross-section area.
- Very good homogeneity and cleanliness
- Very good Polishability.
- Very suitable for texturing.
- Good weldability.
- Good machinability even if it is prehardened up to 40 HRc.
- The recommended working hardness is the delivery hardness.
- Very good nitriding and coating ability.
- Very good dimensional stability while nitriding.
Applications
- Cavities and cores in the plastic Injection molds with surface quality up to A1 and A1+:
- Automotive interior trimming dies.
- White goods’ panels.
- Packaging molds.
- Injection molds of transparent parts.
- In extrusion dies of non-corrosive plastics.
- Machinery equipment, wearing plates.
- Plastic pressing, compression dies.
- Use nitriding if the reinforcement more than 20%
Heat Treatment
| HEAT TREATMENT | TEMPERATURE |
|---|---|
| Soft Annealing | 710-740°C |
| Stress Relieving | 550-600°C |
| Hardening | 870-900°C |
| Tempering | 560-650°C |
Physical Properties
| 20°C | 200°C | 300°C | |
|---|---|---|---|
| Elastic Modulus [kN/mm²] | 212 | 207 | 194 |
| Thermal Expansion Coefficient [10ˉ6/K] | 11 | 12,5 | 12,8 |
| Thermal Conductivity [W/mK] | 41 |
Delivery Condition and Comparison
| Hardness HB | Hardness HRc | Tensile Strength N/mm2 | |
|---|---|---|---|
| Vega 40 | 350-390 | 38-42 | 1150-1290 |
| 1.2738 HH | 320-350 | 34-38 | 1085-1200 |
| 1.2738 | 280-320 | 30-34 | 965-1085 |
Microstructural Cleanness
ASTHM E45/97 Method: A. Plate: I-R
| A (Sulphide Type) | B (Alumina Type) | C (Silica Type) | D (Globular Oxide Type) | ||||
| T (Thin) | H (Heavy) | T | H | T | H | T | H |
| 0,5 | 0,5 | 0,5 | 0,5 | 0 | 0 | 1,0 | 0,5 |
Tempering Graph
