供应C31200铜带

美国标准化学成分对照表 牌 号 化学成分（质量分数）（%）不大于（注明余量及范围者除外） Cu Pb Fe Zn 其它元素 C21000 94.0-96.0 0.030.05余量 - C22000 89.0-91.0 0.050.05余量 - C22600 86.0-89.0 0.050.05余量 - C23000 84.0-86.0 0.050.05余量 - C23030 83.5-85.5 0.050.05余量 Si0.20-0.40 C23400 81.0-84.0 0.050.05余量 - C24000 78.5-81.5 0.050.05余量 - C24080 78.0-82.0 0.2- 余量 Al0.1 C26000 68.5-71.5 0.070.05余量 - C26130 68.5-71.5 0.050.05余量 As0.02-0.08 C26200 67.0-70.0 0.070.05余量 - C26800 64.0-68.5 0.150.05余量 - C27000 63.0-68.5 0.10.07余量 - C27200 62.0-65.0 0.070.07余量 - C27400 61.0-64.0 0.10.05余量 - C28000 59.0-63.0 0.30.07余量 - C31200 87.5-90.5 0.7-1.2 0.1余量 Ni0.25 C31400 87.5-90.5 1.3-2.5 0.1余量 Ni0.7 C31600 87.5-90.5 1.3-2.5 0.1余量 Ni0.7-1.2,P0.04-0.10 C32000 83.5-86.5 1.5-2.2 0.1余量 Ni0.25