| 摘要 |
PROBLEM TO BE SOLVED: To improve the oxidizing resistance and the suitability as a carrier of exhaust gas catalyst in a heat temp. action by arranging an aluminum coated layer having a specific thickness on the one side surface of a steel strip for a carrier having a specific thickness, cold-rolling a steel adding chromium, rare earth metals or yttrium and zirconium in each specific quantity to an iron and executing a homogeneous-diffusion annealing in a specific temp. range after cold-rolling into a specific thickness. SOLUTION: The steel strip for a carrier obtd. by cold-rolling the steel adding 16-25wt.% chromium, 0.01-0.1wt.% rare earth metals or yttrium and zirconium and the ordinary impurities caused by the process to the iron and soften- annealing, is made to 0.5-2.5mm thickness. The aluminum coated layer having 0.08-0.5mm thickness, is arranged on the one side surface of the steel strip, and the coated steel strip is cold-rolled to make 30-150μm thickness of the steel strip. Thereafter, the homogeneous-diffusion annealing is applied to the coated steel strip in the temp. range of 700-1000 deg.C.
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