High hardness steel for armouring and process for the production of such a steel
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United States of America Patent
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Jun 16, 1992
Grant Date -
N/A
app pub date -
Oct 9, 1990
filing date -
Oct 9, 1989
priority date (Note) -
Expired
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Abstract
The invention relates to a high-hardness steel for armouring having the following chemical composition by weight: 0.4 to 0.7% of carbon, 0.3 to 1.5% of manganese, 0.1 to 2% of chromium, 0.5 to 1.5% of silicon, 1 to 5% of nickel, 0.2 to 1% of molybdenum, less than 0.015% of phosphorus and less than 0.005% of sulphur, the remainder being iron and residual impurities resulting from the smelting of the materials necessary for the production. The invention also relates to a process for the production of such a steel.
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