Resistance wire is used as a hot cutting wire for the accurate cutting of complex shapes from polystyrene foam (EPS) and extruded polystyrene (XPS). Depending on the application, the resistance wire is generally a special nickel alloy or a stainless steel, and is heated to approximately 200°C by electrical resistance.
Hot wire cutting is used extensively in the packaging industry and for cutting shapes for R&D prototyping, modelling and architectural mouldings.
Knight Precision Wire are specialist manufacturers of Wire and Cable and can provide free quotations on your requirements. Please get in touch to arrange this.
|Material||Physical & Service Properties|
|ORW - L||Good heating characteristics and easily bent to shape for hand cutting of patterns.|
|ORW - M||Moderate strength and low electrical resistivity are utilised for low heat applications.|
|ORW - H||Good heating characteristics in a medium strength wire.|
|ORW - EH||High strength at elevated temperature, with good creep resistance. The best general purpose cutting wire.|
|ORW - S||The highest specification cutting wire. Very high strength at elevated temperatures, with high creep resistance.|
|Material||Resistivity µΩ/cm||Density g/cm³||Strength N/mm²||Max. Op. Temp.°C||Coefficient of Expansion µm/m°C|
|ORW - L||108||8.35||800||1150||17.5|
|ORW - M||70||8||1200||950||17.6|
|ORW - H||122||8.28||1300||700||12.6|
|ORW - EH||118||8.18||1400||950||12.7|
|ORW - S||131||8.25||1600||980||13.6|