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.