Copper alloy for use as material of heat exchanger

Details Copper alloy for use as material of heat exchanger Copper alloy for use as material of heat exchanger

1989-05-04

1990-06-19

Dean, Richard O.

Metal treatment

Stock

Copper base

148434, 420472, 420476, 420477, C22C 902

Patent

active

049350765

ABSTRACT:
A copper alloy suitable for use as the material of a heat exchanger contains 1 to 4.5 wt % of Zn, 1.0 to 2.5 wt %, preferably 1.5 to 2.0 wt % of Sn, 0.005 to 0.05 wt %, preferably 0.01 to 0.04% of P, and the balance substantially Cu and inevitable impurities, and has grain size not greater than 0.015 mm, preferably below 0.01 mm. The alloy exhibits high resistance levels to corrosion such as stress corrosion cracking, dezincification corrosion and so forth, as well as superior workability, strength and solder wettability, and, hence, can suitably be used as the materials of the constituents of a heat exchanger such as tanks, tube plates and tubes.

REFERENCES:
patent: 3956027 (1976-05-01), Parikh et al.
patent: 4025367 (1977-05-01), Parikh et al.
patent: 4047978 (1977-09-01), Parikh et al.
patent: 4110132 (1978-08-01), Parikh et al.
patent: 4741394 (1988-05-01), Tanigawa et al.
Standards Handbook, Copper Development Association Inc., 1985, title page, Table of Contents and pp. 8, 98, 99 and 104.

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