| Screw |
KTL-404 All-Hard Alloy |
W 6.2%, Mo 5.3%, V, Cr 4.2%, Co 2% |
- High-temperature quenching: 1150–1180°C- High-temperature tempering: 580–620°C (≥4 times)- Tail annealed at high temperature |
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Excellent wear resistance and strength |
| Screw Tip Assemblies |
KTL-404 All-Hard Alloy |
W 6.2%, Mo 5.3%, V, Cr 4.2%, Co 2% |
- High-temperature quenching: 1150–1180°C- High-temperature tempering: 580–620°C (≥4 times)- Tail annealed at high temperature |
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High durability under extreme working conditions |
| Barrel |
KTL-ST30 Double Alloy (Fe-Ni Base) |
Inner alloy: Fe, Ni, Cr, C, Co, B |
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Base: HRC 26–28Inner layer: HRC 59–61 |
- Alloy layer thickness: 1–2 mm (single side)- Low thermal expansion- High resistance to high-temperature softening |
| Nozzle |
SKD61 |
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- Quenching: 1020–1050°C- Tempering: 550–570°C (≥2 times) |
HRC 50 ±2 |
Good thermal fatigue resistance |