Copper and copper alloy density measurements
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Copper and Copper Alloy Density Measurements
w h e r e p is in g / c m 3 (10-3kg/m3), a and b a r e c o n s t a n t s , and T and T m a r e the t e m p e r a t u r e of the liquid m e t a l and the m e l t i n g (or liquidus) t e m p e r a t u r e in K, r e s p e c tively. The v a l u e s for this study a r e found to fall b e tween the two obtained by the m a x i m u m bubble p r e s s u r e method. 3'4 The s t a n d a r d d e v i a t i o n f o r this l a b o r a t o r y ' s pure c o p p e r data is ~:0.0014 g / c m 3 (10 s k g / m 3) as obtained f r o m a v e r a g e s of d a t a at t h r e e t e m p e r a t u r e s . The i m p u r i t y content of the pure c o p p e r was Fe < 0.7 ppm, Sb < 1 ppm, Pb < 1 ppm, Sn < 1 ppm, Ni < 1 ppm, Bi < 0.1 ppm, Ag < 0.3 ppm, As < 2 ppm, Cr
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