Ferro‑Titanit® WFN: High-Temperature Strength & Corrosion Resistance
Because of its 13.5% chromium and 3% molybdenum content, WFN has a high tempering resistance up to around 450 °C, as well as high-temperature hardness and good corrosion resistance. The thermal expansi- on coefficient is adjusted to that of steel through the 1% aluminium alloy addition. Lower stresses thereby occur when non-permanent and permanent joints are heated, reducing the risk of cracking.
Properties
General
| Property | Value |
|---|---|
Density | 6.5 g/cm³ |
Grain structure | Titanium carbide + martensite |
Mechanical
| Property | Value |
|---|---|
Compressive strength | 3600 MPa |
Elastic modulus | 294 GPa |
Flexural strength | 1200 MPa |
Hardness, Rockwell C | 69 [-] |
Shear modulus | 122 GPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100 °C | 1.06e-05 1/K | for 20°C to the mentioned temperature |
200 °C | 1.16e-05 1/K | for 20°C to the mentioned temperature | |
300 °C | 1.22e-05 1/K | for 20°C to the mentioned temperature | |
400 °C | 1.24e-05 1/K | for 20°C to the mentioned temperature | |
500 °C | 1.27e-05 1/K | for 20°C to the mentioned temperature | |
600 °C | 1.29e-05 1/K | for 20°C to the mentioned temperature | |
Thermal conductivity | 18.2 W/(m·K) |
Electrical
| Property | Value |
|---|---|
Electrical resistivity | 9.1e-07 Ω·m |
Magnetic
| Property | Value |
|---|---|
Coercive force | 9200 A/m |
Remanence | 0.16 T |
Saturation polarization | 0.59 T |
Chemical properties
| Property | Value | Comment | |
|---|---|---|---|
Carbon | 0.75 % | ||
Chromium | 13.5 % | ||
Iron | Balance | ||
Molybdenum | 3 % | ||
Other | 33 % | TiC | |
Technological properties
| Property | ||
|---|---|---|
| Application areas | In heat-treated, hardened condition (up to 69 HRC), Ferro-Titanit® can be used to solve many wear problems economically. | |
| General machinability | In as-delivered condition, this material can be machined by conventional methods. | |
| Heat Treatment | Soft annealing: 750°C, 10 hr (Cooling in furnace) Hardness: 51 HRC - Stress-relief-annealing: 600-650°C (cooling in Furnace) - Hardening: 1080°C and quenching in vacuum (1 bar N2) - Temepering 460°C (Hardness:69 HRC) | |
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