39 2 60 0 42 0 controlsc246 cu 20 zn 0 8 si 80 2 48 1 23 76 2 53 3 27c247 cu 27 zn 0 4 si 77 3 46 4 18 67 0 46 9 12c253 cu 27 zn 0 4 si 78 4 47 0 20 68 8 48 2 15c167 cu 27 zn 0 8 si 78 2 46 9 20 73 8 51 7 23a947 cu 30 zn 0 15 sn 69 7 41 8 7 62 6 43 8 4a948 cu 30 zn 0 5 sn 75 1 45 0 15 66 7 46 7 11c248 cu 27 zn 0 4 si 0 5 sn 83 6 50 2 28 73 8 51 7 23c311 cu 27 zn 0 3 si 0 4 sn 80 2 48 1 23 70 9 49 6 18c312 cu 27 zn 0 4 si 0 3 sn 82 4 49 4 26 71 7 50 2 20c313 cu 27 zn 0 5 si 0 2 sn 86 8 52 1 33 75 9 53 1 27c314 cu 27 zn 0 6 si 0 1 sn 83 6 50 2 28 73 6 51 5 23__________________________________________________________________________ table iv______________________________________uz 8 25 conductivity properties alloy no condition conductivity iacs ______________________________________control 35 cw 26 0c246 annealed 18 3c247 annealed 21 9c253 annealed 22 0c167 annealed 18 7a947 35 cw 26 3a948 35 cw 25 1c248 annealed 21 1c311 60 cw 20 5c312 annealed 21 7c313 60 cw 18 5c314 annealed 19 4______________________________________ values for conductivity in the cold worked condition are typically 1 5 t 2 5 iacs lower than the annealed values.