RW 118 / RW 122 / RW 70 High Strength Hot Cutting Wires
These hot cutting wires have high strength at elevated
temperatures and are used for cutting polystyrene (EPS) and
or heat sealing woven polypropylene bags. RW 118 has the
best performance on many different machine models. Some
machines and operations prefer RW 122 or RW 70.
To achieve the best cut, adjust the wire temperature and the speed of the block through the wire. The material type and it’s density will influence the cutting speed.
Our Hot Gripper Tool is an innovative and brand new wire gripper which locks and holds wire diameters from 0.3 mm to 1.6 mm.
RW 118 / RW 122 / RW 70 Characteristics
| Alloy |
Electrical Resistivity at 20°C (µohm.cm) |
Density (g/cm3) |
Maximum Operating Temperature |
| RW 118 | 131 | 8.18 | 950°C (1740°F) |
| RW 122 | 122 | 8.28 | 700°C (1292°F) |
| RW 70 | 70 | 8.00 | 300°C (572°F) |
| Alloy | Melting Point |
Coefficient of Expansion (µ m/m. °C) at 20-100°C |
| RW 118 | 1370°C (2500°F) |
12.7 |
| RW 122 | 1430°C (2500°F) |
12.6 |
| RW 70 | 1420°C (2588°F) |
17.6 |
