74 A
INDUSTRIAL
AND E N G I N E E R I N G
CHEMISTRY
Vol. 39, No. 12
REVERE COPPER and COPPER BASE ALLOYS For Use W i t h
LIQUID OXYGEN
C
O P P E R and its alloys have long been favored by metal fabricators as materials of construction for pressure vessels, distillation columns, heat exchangers and other equipment for chemical plants. T h e ability of these alloys to be readily formed and easily joined by conventional methods, coupled with their good mechanical properties and high corrosion resistance, have made them preeminent in many applications. However, the manufacturer of oxygen producing or handling equipment must
consider more than the above-mentioned properties. H e must insist that the materials used be immune to any adverse effects low temperatures may have. Many commercial alloys become increasingly brittle and lose their ability to withstand sharp blows as the temperature drops. But here again, there need be no worries with respect to copper and its alloys. Note the improvement at low temperatures in strength, ductility and resistance to impact for three copper base alloys:
Temperature, "P.
Tensile Strength, psi.
Deoxidized C o p p e r
Room — 292
31,400 58,000
48 58
43 50
Cupro Nickel, 3 0 %
Room —292
70,800 112,700
41 51
90 97
Cartridge Brass, 7 0 %
Room —292
51,100 73,500
49 75
66 79
Alloy (Annealed)
Elongation, % in 2 in.
Impact Resistance— ft/lb, Izod Specimens
(Tests o n 0 . 2 5 in. d i a m e t e r s p e c i m e n s )
Other Revere alloys, such as Herculoy (High-Silicon Bronze, A ) show similar excellent properties at depressed temperatures. Therefore, in designing oxygen plants, to play safe, specify copper-base alloys. Revere's Technical Advisory Service will be glad to assist in the selection of the proper alloys to meet your requirements.
REVERE COPPER A N D BRASS
INCORPORATED
Founded by Paul Ret/ere in 1801
230 Park Avenue, New York 17, New York ··· Mills: Baltimore, Md.; Chicago, 111.; Detroit, Mich,; New Bedford, Mass.; Rome, N, Y,— Sales Offices in Principal Cities, Distributors Everywhere.
