FIELD: metallurgy. SUBSTANCE: blank is affected by cold rolling. On the final step deformation degree is 76-84%. Heat treatment is carried out by heating at rate 45-55 C/h to 780-820 C. Then sustaining at said temperature within 1.8-2.3 h followed by cooling at rate 12-18 C/h takes place. EFFECT: improves efficiency of the method. 2 tbl
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