The physical properties of titanium. I. Emissivity and resistivity of the commercial metal

Walter C. Michels, Sally Wilford

The resistivity and the total emissivity of commerical titanium have been measured over the temperature range from room temperature to 1400°K. The resistivity at 20°C is 78.6 microhm cm. Above this temperature it increases to a flat maximum of 182 microhm cm at the temperature of the hexagonal-body-centered cubic transformation. The total emissivity is about 0.31 at low temperatures and there is some indication that it shows a maximum near the transition temperature. The spectral emissivity and the brightness temperature scale are also determined over the range of 1000°K-1400°K.

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Materials
Curve 1
Wavelength μ: 0.655 Temperature Range, K: 1050-1400 Geometry θ': ~0° Reported Error, %: ±3 Composition (weight percent), Specifications and Remarks: Rod (0.25 in. diameter); measured in vacuum (<10-5 mm Hg).
Curve 1
Temperature Range, K: 300-1300 Reported Error, %: ±10 Composition (weight percent), Specifications and Remarks: Commercial wire (0.0424 cm diameter); measured in vacuum (<10-5 mm Hg).