FIELD: metallurgy.
SUBSTANCE: proposed composition contains the following substances, in wt %: carbon - 2.7-3.3, silicon - 1.7-2.3, manganese - 0.5-0.7, aluminium - 4.0-4.5, nickel - 0.5-0.7, vanadium - 1.3-1.5, copper - -0.3-0.5, cobalt - 0.3-0.4, beryllium - 0.003-0.004, tungsten - 0.5-0.5, iron making the rest.
EFFECT: higher heat resistance.
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