铜合金：C1020 C1020P C1020R C1100P C1100R C1201 C1201P C1201R C1220 C1220P C1220R C1221 C1221P C1221R C2100 C1200P C1200R C2200 C2200P C2200R C2300 C2300P C2300R C2400 C2400P C2400R C2600 C2600P C2600R C2680 C2680P C2680R C2720 C2720P C2720R C2801 C2801P C2801R C3560 C3560P C3560R C3561 C3561P C3561R C3710 C3710P C3710R C3713 C3713P C3713R C4250 C4250P C4250R C4430 C4430P C4430R C4621 C4621P C4621R C6140 C6140P C6161 C6280 C6280P C6301 C6301P C7060 C7060P C7150 C7150P C1100 C1100PP C1221 C1221PP C1401 C1401PP C2100 C5111 C5111P C2051 C2051R C6711 C6711P C6712 C6712P C5111R C5102 C5102P C5102R C5191 C5191P C5191R C5212 C5212P C5212R C7351 C7351P C7351R C7451 C7451P C7451R C7521 C7521P C7521R C7541 C7541P C7541R C1700 C1700P C1700R C1720 C1720P C1720R C5210 C5210P C5210R C7701 C7701P C7701R C1020
