Domestic valve materials commonly used technical standards casting copper alloy technical conditions (Table 2)

Serial number Alloy grade Impurity limit,% is not greater than
iron aluminum antimony silicon phosphorus sulfur arsenic carbon bismuth nickel tin Zinc lead manganese sum
1 ZCuSn3Zn8Pb6Ni1 0.4 0.02 0.3 0.02 0.05           1.0
2 ZCuSn3Zn11Pb4 0.5 0.02 0.3 0.02 0.05           1.0
3 ZCuSn5Pb5Zn5 0.3 0.01 0.25 0.01 0.05 0.10     2.5 *      1.0
4 ZCuSn5Pb5 0.1 0.01 0.05 0.02   0.05     0.10   0.05 0.25 0.05 0.75
5 ZCuSn10Pb5 0.3 0.02 0.3   0.05        1.0 *    1.0
6 ZCuSn10Zn2 0.25 0.01 0.3 0.01 0.05 0.10     2.0 *    1.5 * 0.2 1.0
7 ZCuPb10Sn10 0.25 0.01 0.5 0.01 0.05 0.10     2.0 *   2.0 *   0.2 1.0
8 ZCuPb15Sn8 0.25 0.01 0.5 0.01 0.10 0.10     2.0 *   2.0 *   0.2 1.0
9 ZCuPb17Sn4Zn4 0.4 0.05 0.3 0.02 0.05           0.75
10 ZCuPb20Sn5 0.25 0.01 0.75 0.01 0.10 0.10     2.5 *   2.0 *   0.2 1.0
11 ZCuPb30 0.5 0.01 0.2 0.02 0.08   0.10   0.005   1.0 *    0.3 1.0
12 ZCuAl8Mn13Fe   【Print】 【Close】
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