Kanthal Wire Data Shape: Round Heat treatment: Annealed (soft) Max. operating temp: 1400°C (2550°F) Ohms 5.27 per foot at room temperature. Diameter 0.0126in /0.32mm Chemical composition C % Si % Mn % Cr % Al % Fe % Nominal composition 5.8 Bal. Min - - - 20.5 - Max 0.08 0.7 0.4 23.5 - Mechanical properties Wire size Yield strength Tensile strength Elongation Hardness Ø Rp0.2 Rm A mm MPa MPa % Hv 1.0 545 760 20 240 4.0 475 680 18 230 Temperature °C 900 1000 1100 1200 1300 Mechanical properties at elevated temperatureMPa 34 18 10 6 4 Ultimate tensile strength - deformation rate 6.2 x 10-2/min Temperature °C 800 1000 Creep strength - 1% elongation in 1000 hMPa 1.2 0.5 Physical properties Density g/cm3 7.10 Electrical resistivity at 20°C Ω mm2/m 1.45 Poisson's ratio 0.30 Temperature °C 20 100 200 400 600 800 1000 Young's modulusGPa 220 210 205 190 170 150 130 Temperature°C 100 200 300 400 500 600 700 800 900 1000 1100 1200 1300 1400 Temperature factor of resistivityCt 1.00 1.00 1.00 1.00 1.01 1.02 1.02 1.03 1.03 1.04 1.04 1.04 1.04 1.05 Temperature °C Thermal Expansion x 10-6/K Coefficient of thermal expansion20 - 250 11 20 - 500 12 20 - 750 14 20 - 1000 15 Temperature °C 50 600 800 1000 1200 1400 Thermal conductivityW m-1 K-1 11 20 22 26 27 35 Temperature °C 20 200 400 600 800 1000 1200 1400 Specific heat capacitykJ kg-1 K-1 0.46 0.56 0.63 0.75 0.71 0.72 0.74 0.80 Melting point °C 1500 Max continuous operating temperature in air °C 1400 Magnetic properties The material is magnetic up to approximately 600°C (Curie point). Emissivity - fully oxidized material 0.70
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