A frame for a reciprocating sieve assembly comprises a first side member (300, 308) that is elongate and extends longitudinally a second side member (302, 310) that is elongate and extends longitudinally a third side member (304, 312) that is elongate and extends transversely a fourth side member (306, 314) that is elongate and extends transversely a first hanger mount (206L, 210L) coupled to and extending between the first side member and the third side member a second hanger mount (208L, 212L) coupled to and extending between the first side member and the fourth side member a third hanger mount (206R, 210R) coupled to and extending between the second side member and the third side member and a fourth hanger mount (208R, 212R) coupled to and extending between the second side member and the fourth side member wherein the first side member, the second side member, the third side member, and the fourth side member are comprised essentially of an aluminum alloy and wherein the first hanger mount, the second hanger mount, the third hanger mount, and the fourth hanger mount are comprised essentially of a ferrous alloy.
