FIELD: mechanical engineering, instrument making, special ship building and drilling equipment. SUBSTANCE: steel comprises the following components used in the ratio, wt%: carbon 0.04-0.90; silicon 0.10-0.60; manganese 5.0-12.0; chromium 19-21; nickel 4.5-9.0; molybdenum 0.5-1.5; vanadium 0.10-0.55; calcium 0.005-0.010; niobium 0.03-0.30; nitrogen 0.40-0.70; inevitable admixtures and iron the balance. Concentration of alloying elements is true provided that: [Ni] +0.1[Mn]-0,01[Mn]2+18[N]+30[C]/[Cr]+1.5[Mo] +0.48[Si] +2.3[V] +1.75[Nb]=0.70-90 is met. Carbon-nitrogen content ratio is 0.05-0.15. EFFECT: improved qualities and wider range of use. 3 cl, 2 tbl, 1 ex
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Year |
Author |
Number |
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2008 |
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2000 |
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2005 |
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2008 |
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| HIGH-STRENGTH NONMAGMETIC COMPOSITION STEEL |
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RU2360029C1 |
