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Free Books / Reference / 20th Century Formulas Recipes Processes Vol1 / |  |
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File Alloys |
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Free Books / Reference / 20th Century Formulas Recipes Processes Vol1 / | |
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File Alloys |
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This section is from the "Henley's Twentieth Century Formulas Recipes Processes" encyclopedia, by Norman W. Henley and others.
Many copper-tin alloys are employed for the making of files which, in distinction from the steel files, are designated composition files. Such alloys have the following compositions:
I II
Copper........... 64.4 62
Tin.............. 18.0 20
Zinc.............. 10.0 10
Lead............. 7.6 8
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III |
IV |
V |
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Copper.... |
. . 57.0 |
61.5 |
73.0 |
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Tin....... |
. . 28.5 |
31.0 |
19.0 |
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.. 78.0 |
8.0 |
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Lead...... |
.. 7.0 |
8.5 |
8.0 |
Another alloy for composition files is copper, 8 parts; tin, 2; zinc, l,and lead, 1—fused under a cover of borax.
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