STEEL FOR ENAMELING AND PRODUCTS MADE THEREFROM Russian patent published in 2001 - IPC

FIELD: manufacture of enameled consumer goods, sanitary products and domestic products (washing machines, electric and gas refrigerators). SUBSTANCE: Steel is capable of being enameled (high adhesion to enamel coating) and is resistant to forming fish scale defect. Claimed steel comprises, wt %: carbon, 0.04-0.09; manganese, 0.15-0.50; silicon, 0.01-0.05; copper, 0.01-0.06; aluminium, 0.02-0.06; boron, 0.008-0.0050; nitrogen, 0.0004- 0.012; calcium 0.0005-0.0100; sulfur <0.25; phosphorus <0.03, and iron and impurities; the balance. In this case, content of nitrogen is correlated with content of carbon, and content of calcium is correlated with content of boron by dependencies: . Products are made of steel of the composition indicated above. They are made either in the form of hot rolled sheet with thickness of 2.0-5.5 mm, or in the form of cold roller sheet with thickness of 0.5-2.5 mm with ferrite grain size of not greater than No. 5 and hydrogen permeability of Atel > = 10. EFFECT: improved properties of steel, namely high ability to plastic deformation. 5 cl, 1 tbl