Steel 20Н3ДМЛ
Designation
Description
20Н3ДМЛ steel is used: for the manufacture of large shaped castings high-strength complex form of diverse, loaded with details of shipbuilding with wall thickness up to 130 mm; parts operating at low temperatures.
Standards
Chemical composition
Fe is the basis.
According to OST 5R.9285-95, in the case of steel smelted in the main electric furnaces as cold-resistant (technical conditions of the order or requirements of the drawing), the sulfur and phosphorus content should not be more than 0.020% of each. As agreed by the manufacturer with the developer OST 5P.9285-95 (CRI "Prometey"), the content of sulfur and phosphorus is allowed up to 0.030% of each. Steel should be smelted in electric arc furnaces or induction furnaces with basic lining. As a charge it is allowed to use waste of high-quality steel such as AK or AL.
According to OST 5R.9285-95, in the case of steel smelted in the main electric furnaces as cold-resistant (technical conditions of the order or requirements of the drawing), the sulfur and phosphorus content should not be more than 0.020% of each. As agreed by the manufacturer with the developer OST 5P.9285-95 (CRI "Prometey"), the content of sulfur and phosphorus is allowed up to 0.030% of each. Steel should be smelted in electric arc furnaces or induction furnaces with basic lining. As a charge it is allowed to use waste of high-quality steel such as AK or AL.