| 摘要 |
<p>Copper-base alloys combining annealed strengths of 30t.s.i. with conductivities of 75 to 81 IACS. Their comp. is Fe 1.5 to 3.5%, Si 0.02 to 0.21%, P 0.01 to 0.15% and/or Zn 0.03 to 0.2%, Al to 0.07%, and Mn to 0.08% may also be added. Casting by normal methods is followed by hot-rolling at 800 degrees to 1050 degrees C, solids are then cold-rolled with 50% min. reduction between anneals. Bell annealing developes max conductivity at temps. between 400 degrees and 600 degrees C.</p> |
