| 摘要 |
This invention provides a steel alloy, for use for razor blades, the ranges of composition of which are given in the table below, the first column giving the maximum range for the alloy elements and impurities (the balance being iron), the second column giving a narrower preferred range, whilst the third column gives a particularly advantageous composition: - Maximum Preferred -Element Range Range Example -Ni% 15 to 25 17 to 22 20 -Cr% 3 to 8 3.5 to 5 4 -Ti% 2 to 5* 3 to 4.5 4 -Al% 1 to 5* 2 to 4 3 -C% less than 0.02 0.01 0.005 -Mn% less than 0.2 0.1 0.05 -Si% less than 0.2 0.1 0.05 -N% less than 0.02 0.01 0.003 -P, S% less than 0.02 0.01 0.005 -*but Ti + Al should be less than 9% -
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