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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.
RW 118 / RW 122 / RW 70 Characteristics
| Alloy |
Electrical Resistivity at 20°C (µohm.cm) |
Density (g/cm3) |
Maximum Operating Temperature |
Melting Point |
Coefficient of Expansion (µ m/m. °C) at 20-100°C |
| RW 118 |
118 |
8.18 |
950°C
(1740°F) |
1370°C
(2500°F) |
12.7 |
| RW 122 |
122 |
8.28 |
700°C
(1292°F) |
1430°C
(2500°F) |
12.6 |
| RW 70 |
70 |
8.00 |
300°C
(572°F) |
1420°C
(2588°F) |
17.6 |
|