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Conversion tables

Content: Wire gauge conversion table Temperature conversion table Interpolation table Miscellaneous conversion factors Wire gauge conversion table Gauge AWG or B&S SWG no. mm in mm in 4-0 11.684 0.4600 10.1600 0.4000 3-0 10.404 0.4096 9.4488 0.3720 2-0 9.266 0.3648 8.8392 0.3480 0 8.252

Design calculations for heating elements

In this section an element is defined as the combination of heating wire and any supporting and connecting materials. Electrical appliances equipped with heating elements are being used in domestic as well as industrial applications. Domestic applications are e.g. cooking, heating of fluids,

Symbols, formulas and definitions

List of symbols Unit for calculation Symbol Meaning Metric Imperial AC Surface area of heating conductor cm2 in2 b Width (ribbon or strip) mm in Ct Temperature factor (ratio of resistivity at operating temperature to resistivity at room temperature) d Wire diameter mm in D Outer coil diameter mm

Terminals (resistance and weight data)

Kanthal® A-1 and Kanthal® APM Dimension, mm Resistance, Ω/m Weight, g/m 8 0.0288 357 10 0.0185 558 12 0.0128 803 16 0.0072 1428 20 (Kanthal® APM only) 0.0046 2231 30 (Kanthal® A-1 only) 0.0021 5019 39 (Kanthal® APM only) 0.0012 8922 Kanthal® D Dimension, mm Resistance,

Strip

Content: Kanthal® A-1 and Kanthal® APM Kanthal® AF Kanthal® D Nikrothal® 80 Nikrothal® 70 Kanthal® A-1 and Kanthal® APM Resistivity 1.45 Ω mm2 m-1. Density 7.1 g cm-3. To obtain resistivity at working temperature, multiply by factor Ct in following table.

Ribbon

Content: Kanthal® A, Kanthal® AF and Kanthal® AE Kanthal® D Alkrothal® Nikrothal® 80, Nikrothal® 60 and Nikrothal® 40 Cuprothal® 49 Kanthal® A, Kanthal® AF and Kanthal® AE Ribbon dimensions and properties Resistivity 1.39 Ω mm2/m (836 Ω/cmf).

Wire

Content: Kanthal® A-1 and Kanthal® APM Kanthal® A, Kanthal® AF and Kanthal® AE Kanthal® D Alkrothal® Nikrothal® 80, Nikrothal® TE and Nikrothal® 70 Nikrothal® 60 Nikrothal® 40 and Nikrothal® 20 Nifethal® 70 Nifethal® 52 Cuprothal®

Product varieties

Rod Wire Strip Ribbon Welded tubes Extruded tubes Straightened wire Kanthal® APM • • • • • Kanthal® A-1 • • • • Kanthal® A • • • Kanthal® D • • • • • Kanthal® DT • • • • • Kanthal® AF • • • • • Kanthal® AE • • • Alkrothal® • • • • • Nikrothal® 80 • •

How electric heating can help foam glass manufacturers reach their full potential

With recycled materials and an environmentally friendly process, the foam glass manufacturing process contributes to a more sustainable world.