FIELD: metallurgy.
SUBSTANCE: steel contains the following, wt %: carbon 0.12 - 0.16, silicone 0.20 - 0.60, manganese 0.5 - 0.9, chrome 0.5 - 0.8, nickel 0.4 - 0.7, molybdenum 0.04 - 0.07, vanadium 0.03 - 0.05, copper 0.25 - 0.42, aluminium 0.04 - 0.07, phosphorus ≤ 0.02; sulphur ≤ 0.02; and iron is the rest. After normalisation annealing steel has ferritic structure with grain size of 12-16 mcm, which are combined into blocks with size of 90 - 180 mcm, which are banded with fine pearlite.
EFFECT: steel has high impact strength and good weldability at optimum combination of physical and mechanical properties and reduction of prime cost.
2 tbl
| Title | Year | Author | Number |
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| METHOD OF MAKING STRIPS FROM LOW-ALLOY STEEL | 2012 |
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| STRUCTURAL LOW-ALLOYED CAST STEEL | 2010 |
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| HOT-ROLLED SHEET OF LOW-ALLOY STEEL WITH THICKNESS FROM 15 TO 165 mm AND METHOD OF ITS PRODUCTION | 2016 |
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| HIGH-STRENGTH COLD-RESISTANT WELDED STEEL | 2012 |
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| THICK SHEET OF STRUCTURAL STEEL FOR MANUFACTURING DETAILS OF WELDED STRUCTURES AND METHOD FOR ITS PRODUCTION IN NORMALIZED CONDITION | 2016 |
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| LOW-CARBON STEEL, AND ROLLED PRODUCTS FROM LOW-CARBON STEEL OF INCREASED STABILITY TO HYDROGEN CRACKING AND INCREASED COLD RESISTANCE | 2011 |
|
RU2496906C2 |
| STRIP MANUFACTURING METHOD | 2012 |
|
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