FIELD: metallurgy.
SUBSTANCE: invention relates to metallurgy, specifically to air hardenable steel alloy, used in making components of protection against shock wave. Alloy contains following, wt%: from 0.18-0.26 of carbon, from 3.50 to 4.00 nickel, from 1.60 to 2.00, chromium, from 0 to 0.50 molybdenum, from 0.80 to 1.20 manganese, from 0.25 to 0.45 silicon, from 0 to less than 0.005 titanium, from 0 to less than 0.020 phosphorus, from 0 to 0.005 boron, from 0 up to 0.003 sulphur, balance is iron and unavoidable impurities. Alloy has Brinell hardness ranging from 352 HBW to 460 HBW.
EFFECT: achieving combination of high strength, medium hardness and impact strength.
21 cl, 7 dwg, 6 tbl, 7 ex
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