Metal treatment – Stock – Copper base
Patent
1996-02-09
1999-03-16
Ip, Sikyin
Metal treatment
Stock
Copper base
420472, 420473, C22C 902
Patent
active
058824421
ABSTRACT:
There is provided a phosphor bronze alloy having a grain structure that is refined by the addition of a controlled amount of iron. Direct chill cast alloys containing from 1.5% to 2.5%, by weight tin, from 1.65% to 2.65% iron, from 0.03% to 0.35% phosphorous and the remainder copper and inevitable impurities have an as-cast average crystalline grain size of less than 100 microns and are readily hot worked. When the iron content is too low, the average crystalline grain size increases and the alloy cracks during hot working. When the iron content is too high, iron stringers form, detrimentally impacting both the appearance and properties of a wrought strip.
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Brauer Dennis R.
Breedis John F.
Brenneman William
Caron Ronald N.
Tyler Derek E.
Ip Sikyin
Olin Corporation
Rosenblatt Gregory S.
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