FIELD: metallurgy, in particular steel excellent in resistance to corrosion and seamless casing.
SUBSTANCE: claimed steel contains (mass %) carbon 0.07-0.30; manganese 0.35-1.50; silicium 0.15-0.70; chromium 0.05-1.00; nickel 0/05-0.50; copper 0.05-0.50; aluminium 0.01-0.05; sulfur ≤0.010; phosphorus ≤0.020; calcium 0.0008-0.0020; and balance: iron and inventible impurities including oxygen. Steel has grain number not more than 8. Content of carbon, manganese and silicium satisfies the formula: 2[C]+0.1[Mn]+0.4[Si]<0.63. Content of calcium aluminates is at most 3 inclusion/mm3; oxygen content is at most 0.3 in respect to aluminium, and sulfide number is at most 1.0. Steel of present invention is useful for production of pipe installation for transport of aggressive media.
EFFECT: steel with improved corrosion resistance, viscosity and cold resistance.
3 cl, 1 tbl
| Title | Year | Author | Number |
|---|---|---|---|
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| STEEL ROLLING OF INCREASED CORROSION RESISTANCE AND ARTICLE MADE OF IT | 2018 |
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