Abstract
1. In Kh18N12 steel separate additions of phosphorus (0.044%), copper (0.68%), molybdenum (0.61%), tungsten (2.7%), niobium (0.62–1.6%), and nitrogen (0.3–0.35%) decrease the resistance of the steel to corrosion cracking. Nitrogen (0.061%), boron (0.005%), and silicon (0.81%) have no significant effect on the resistance of the steel to corrosion cracking. Boron (0.095%) increases the corrosion resistance of Kh18N12 steel to corrosion cracking by approximately a factor of two. 2. The resistance of steel to corrosion cracking increases significantly with increasing concentrations of nickel, the amount of chromium remaining the same. 3. An increase in the amount of carbon from 0.004 to 0.20% and also additional tempering at 600\dgC for 1500 h have no significant effect on the resistance of Kh16N15M2B steel to corrosion cracking.
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