FIELD: metallurgy.
SUBSTANCE: proposed composition contains the following substances, in wt %: carbon - 3.0-3.4, silicon - 0.5-1.0, manganese - 0.4-0.8, aluminium - 1.5-2.0, boron - 0.3-0.5, vanadium - 0.3-0.5, cobalt - 0.8-1.2, iron making the rest.
EFFECT: higher heat resistance.
1 tbl
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