FIELD: metallurgy.
SUBSTANCE: armour heat-resistant welded martensitic steel ("БТСМ"150-200) contains carbon, silicium, manganese, chrome, nickel, molybdenum, sulphur, phosphorus, cobalt, copper and iron at the following component ratio, wt %: carbon 0.001 - 0.41, silicium 0.1 - 2.6, manganese 0.1 - 1.8, chrome 0.1 - 8.6, nickel 0.1 - 1.9, molybdenum 0.1 - 0.6, cobalt 0.05 - 4.6, copper 0.1 - 1.9, sulphur - not more than 0.004, phosphorus - not more than 0.008, and iron is the rest.
EFFECT: increasing heat resistance, weldability and armour characteristics.
3 cl, 3 tbl
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