Machinery's Handbook, 31st Edition
Cast CopperS AND COPPER Alloys 515 Table 2. Properties and Applications of Cast Coppers and Copper Alloys Table 2. (Continued) Properties and Applications of Cast Coppers and Copper Alloys
Typical Mechanical Properties, as Cast or Heat-Treated a
Tensile Strength (ksi)
Yield Strength (ksi)
Elonga tion in 2 in. (%)
Machin ability Rating b
Nominal Composition (%)
Typical Applications
Nickel-Tin Bronzes
Valve stems and bodies, bearings, wear guides, shift forks, feeding mechanisms, circuit breaker parts, gears, piston cylinders, nozzles. Structural castings, gear components, motion-translation devices, machinery parts, bearings.
C94700 88 Cu, 5 Sn, 2 Zn, 5 Ni
50 (85) 23 (60) 35 (10) 30 (20)
C94800 87 Cu, 5 Sn, 5 Ni
45 (60) 23 (30)
35 (8)
50 (40)
Aluminum Bronzes
Acid-resisting pumps, bearings, gears, valve seats, guides, plungers, pump rods, bushings.
C95200 88 Cu, 3 Fe, 9 Al
80
27
35
50
C95300 89 Cu, 1 Fe, 10 Al C95400 85 Cu, 4 Fe, 11 Al C95500 81 Cu, 4 Ni, 4 Fe, 11 Al C95600 91 Cu, 7 Al, 2 Si C95700 75 Cu, 2 Ni, 3 Fe, 8 Al, 12 Mn C95800 81 Cu, 5 Ni, 4 Fe, 9 Al, 1 Mn
75 (85) 27 (42) 25 (15)
55 Pickling baskets, nuts, gears, steel-mill slippers, marine equipment, welding jaws.
Bearings, gears, worms, bushings, valve seats and guides, pickling hooks. Valve guides and seats in aircraft engines, corrosion-resistant parts, bushings, gears, worms, pickling hooks and baskets, agitators. Cable connectors, terminals, valve stems, marine hardware, gears, worms, pole-line hardware. Propellers, impellers, stator clamp segments, safety tools, welding rods, valves, pump casings.
85 (105) 35 (54)
18 (8)
60
100 (120) 44 (68) 12 (10)
50
75
34
18
60
95
45
26
50
95
38
25
50 Propeller hubs, blades, and other parts in contact with salt water.
Copper-Nickels
C96200 88.6 Cu, 10 Ni, 1.4 Fe 45 min 25 min 20 min C96300 79.3 Cu, 20 Ni, 0.7 Fe 75 min 55 min 10 min
10 Components of items being used for seawater corrosion resistance.
15 20
Centrifugally cast tailshaft sleeves. Valves, pump bodies, flanges, elbows used for seawater corrosion resistance.
C96400 69.1 Cu, 30 Ni, 0.9 Fe C96600 68.5 Cu, 30 Ni, 1 Fe, 0.5 Be C97300 56 Cu, 2 Sn, 10 Pb, 12 Ni, 20 Zn C97400 59 Cu, 3 Sn, 5 Pb, 17 Ni, 16 Zn C97600 64 Cu, 4 Sn, 4 Pb, 20 Ni, 8 Zn C97800 66 Cu, 5 Sn, 2 Pb, 25 Ni, 2 Zn
68
37
28
(110)
(70)
(7)
20 High-strength constructional parts for seawater corrosion resistance.
Nickel Silvers
Hardware fittings, valves and valve trim, statuary, ornamental castings. Valves, hardware, fittings, ornamental castings. Marine castings, sanitary fittings, ornamental hardware, valves, pumps. Ornamental and sanitary castings, valves and valve seats, musical instrument components. Glass-making molds, plate glass rolls, marine hardware. Valve stems, marine and other uses requiring resistance to dezincification and dealuminification, propeller wheels, electrical parts, mining equipment gears.
35 38 45 55
17 17 24 30
20 20 20 15
70 60 70 60
Special Alloys
C99300 71.8 Cu, 15 Ni, 0.7 Fe, 11 Al, 1.5 Co
95
55
2
20
C99400 90.4 Cu, 2.2 Ni, 2.0 Fe, 1.2 Al, 1.2 Si, 3.0 Zn 66 (79) 34 (54)
25
50
C99500 87.9 Cu, 4.5 Ni, 4.0 Fe, 1.2 Al, 1.2 Si, 1.2 Zn 70 min 40 min 12 min
50 Same as C99400, but where higher yield strength is required.
C99700 56.5 Cu, Al, 1.5 Pb, 12 Mn, 5 Ni, 24 Zn C99750 58 Cu, 1 Al, 1 Pb, 20 Mn, 20 Zn
55
25
25
80
65 (75) 32 (40) 30 (20) a Values in parentheses are for heat-treated condition. b Free cutting brass = 100. Source: Copper Development Association, New York.
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