kergsulav metallisulam (sulamistemperatuur 69 °C), mis sisaldab 50 % Bi, 25 % Pb ja 12,5 % Sn ja Cd, fusible (melting point 69 oC) alloy based on the quarternary eutectic of Pb-Bi-Sn-Cd system; contains 50 % Bi, 25 % Pb, 12,5 % Sn and Cd