(1) C5111: 3.5%~4.5%Sn, 0.03%~0.35%P, >99,5 procent (Cu plus Sn plus P).
(2) C5102: 4.5% to 5.5% Sn, 0.03% to 0.35% P, >99,5 procent (Cu plus Sn plus P). (3) PBC2: 87,0 procent -91.0 procent Cu, 9,0 procent {{10}}.{{12} } procent S, 0.05 procent -0.20 procent P (2B: 0,15 procent -0.50 procent P; 2C: 0,05 procent -0 .50 procent P),<1.0% impurity.