FINE GRAIN COPPER ALLOYS

Modern continuous casting techniques allow for a fine grain alloy structure and reduced segregation, thereby greatly improving casting strength. Fine grain copper alloys, developed for nuclear and aerospace uses, are now available for commercial applications.

The fine grain continuous cast process offers many advantages over conventional cast products. The extreme fineness and uniformity of the cast structure permits more severe forming and machining operations. Fine grain continuous cast bars and tubes are easier to micro finish and results in longer life for bearings, gears and other copper alloy parts.

Enhanced mechanical properties	Product consistency
Easier to machine	Consistent dispersion of elements
Enhanced corrosion resistance	Better response to heat treatment

Typical continuous cast cross section	Fine Grain continuous cast cross section
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Typical continuous cast longitudinal cross section	Fine Grain continuous cast longitudinal cross section
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When fine grain continuous cast bars and tubes are specified, engineers, buyers and producers are asking for, and getting, the best cast structure available.

Alloy	Type Casting	Tensile Strength psi	Yield Strength psi	Elongation % in 2"	Impact Strength Ft. Lb.	Brinell Hardness
C92900	Fine grain	59,000	38,500	14	28	117
	Continuous cast	51,500	29,000	18	25	92
	Permanent mold	51,000	26,500	14	20.2	83
	Sand cast	48,400	21,600	42	8.7	63
C83600	Fine grain	44,500	23,900	32	20	75
	Continuous cast	42,000	21,400	28	15	72
	Permanent mold	41,200	19,500	24	13.5	65
	Sand cast	36,400	16,900	35	12	49
C93200	Fine grain	45,500	27,600	21	12.5	77
	Continuous cast	44,000	24,000	16	11	72
	Permanent mold	41,600	21,900	18	11	69
	Sand cast	40,400	19,500	39	9.3	65
C94100	Fine grain	31,300	18,600	26	7	60
	Continuous cast	28,700	18,300	8	6	57
	Permanent mold	28,500	18,200	12	5.3	53
	Sand cast	26,900	15,800	17	5.5	45

Although the fine grain improvement applies to any cast metal, Anchor Bronze & Metals, Inc. specializes in copper alloys, bearing bronze, aluminum bronze, manganese bronze and high strength spinodal copper alloys.