FIELD: metallurgy. SUBSTANCE: the steel further comprises calcium and boron, the ratio of the components being as follows (wt %): 0.13-0.18 carbon; 0.15-0.35 silicon; 0.65-1.10 manganese; 0.5-0.8 nickel; 1.8-2.5 chromium; 0.5-0.8 molybdenum; 0.015-0.045 vanadium; 0.01-0.07 aluminium; 0.006-0.012 nitrogen; 0.0002-0.0009 calcium; 0.0002-0.003 boron; and iron, the balance. EFFECT: improved impact viscosity. 2 tbl
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Authors
Dates
1994-07-15—Published
1991-09-06—Filed