Ferro-Titanit® Nikro 128 – Premium Nickel Martensite Alloy with Superior Corrosion Resistance
The matrix structure consists of a highly tough, age-hardenable nickel martensite. The chromium content of 13.5 % provides good corrosion resistance. Finish-machining is performed in the solution-annealed, as- delivered condition. Subsequent age-hardening takes place at a relatively low temperature of 480 °C and can be conducted, for example, in a convection air furnace or an electrically heated chamber furnace.
Properties
General
| Property | Value |
|---|---|
Density | 6.6 g/cm³ |
Grain structure | Titanium carbide + nickel martensite |
Mechanical
| Property | Value |
|---|---|
Compressive strength | 2750 MPa |
Elastic modulus | 294 GPa |
Flexural strength | 1200 MPa |
Hardness, Rockwell C | 62 [-] |
Shear modulus | 117 GPa |
Thermal
| Property | Temperature | Value | Comment |
|---|---|---|---|
Coefficient of thermal expansion | 100 °C | 8.3e-06 1/K | for 20°C to the mentioned temperature |
200 °C | 8.9e-06 1/K | for 20°C to the mentioned temperature | |
300 °C | 9.3e-06 1/K | for 20°C to the mentioned temperature | |
400 °C | 9.6e-06 1/K | for 20°C to the mentioned temperature | |
500 °C | 9.9e-06 1/K | for 20°C to the mentioned temperature | |
600 °C | 1.02e-05 1/K | for 20°C to the mentioned temperature | |
700 °C | 9.2e-06 1/K | for 20°C to the mentioned temperature | |
800 °C | 9.5e-06 1/K | for 20°C to the mentioned temperature | |
Thermal conductivity | 100 °C | 17.1 W/(m·K) | |
150 °C | 17.8 W/(m·K) | ||
200 °C | 18.8 W/(m·K) | ||
250 °C | 19.9 W/(m·K) | ||
300 °C | 21.2 W/(m·K) | ||
350 °C | 22.6 W/(m·K) | ||
400 °C | 24.2 W/(m·K) | ||
450 °C | 25.9 W/(m·K) | ||
500 °C | 27.6 W/(m·K) | ||
550 °C | 29.5 W/(m·K) | ||
600 °C | 31.5 W/(m·K) |
Electrical
| Property | Temperature | Value |
|---|---|---|
Electrical resistivity | 20 °C | 1.1e-06 Ω·m |
100 °C | 1.12e-06 Ω·m | |
200 °C | 1.17e-06 Ω·m | |
300 °C | 1.21e-06 Ω·m | |
400 °C | 1.25e-06 Ω·m | |
500 °C | 1.31e-06 Ω·m | |
600 °C | 1.67e-06 Ω·m |
Magnetic
| Property | Value |
|---|---|
Coercive force | 3700 A/m |
Remanence | 0.19 T |
Saturation polarization | 0.74 T |
Chemical properties
| Property | Value | Comment | |
|---|---|---|---|
Chromium | 13.5 % | ||
Cobalt | 9 % | ||
Iron | Balance | ||
Molybdenum | 5 % | ||
Nickel | 4 % | ||
Other | 30 % | 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 | Annealing: 850°C, 2-4 hr in vacuum (Cooling 1-4.5 bar N2) Hardness: 53 HRC - Age-Hardening 480°C, 6-8 hr, Hardness: 62 HRC | |
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