The Cr-Al-Fe type alloy for electric resisting material has been needed for electric resistor because of its long service life under relatively high temperature, oxidation resistance and also lower cost.
Its cold workability, however, is poor since it contains much Al. Therefore, the authors investigated this problem through the experiment of impact properties.
(1) It is possible to let the impact value under room temperature higher if we make Al about 3%, and C less than 0.07% at 15% chromium considering its specific resistance.
(2) It is desirable to be cold-rolled with 40% reduction for annealing.
(3) Anisotrophy of specific resistance for direction of rolling of its cold rolled alloy is slightly recognized.
