Machinery's Handbook, 31st Edition
518
Wrought CopperS AND COPPER Alloys Table 3. Properties and Applications of Wrought Coppers and Copper Alloys Table 3. (Continued) Properties and Applications of Wrought
Strength (ksi) Elonga tion in 2 in. (%) Tensile Yield
Nominal Composi tion (%)
Machin ability Rating a
Name and Number
Fabricating Characteristics and Typical Applications
Excellent cold workability. Fabricated by extrusion and drawing. Uses: resistance-welding electrodes, soldering gun tips, MIG welding contact tips, continuous-casting molds. Excellent cold workability; good hot formability. Uses: trolley wires, heating pads, electric-blanket elements, spring contacts, railbands, high-strength transmission lines, connectors, cable wrap, switch-gear components, and waveguide cavities. Fabricating characteristics same as C16200. Uses: electrical springs and contacts, trolley wire, clips, flat cable, resistance-welding electrodes. Fabricating characteristics same as C16200. Commonly fabricated by blanking, forming and bending, turning, drilling, tapping. Uses: bellows, Bourdon tubing, diaphragms, fuse clips, fasteners, lock-washers, springs, switch parts, roll pins, valves, welding equipment.
98.8 Cu, 0.58 Al 2 O 3 70-90 65-87 22
C15760
C16200, C16210 Cadmium copper
99.0 Cu, 1.0 Cd 35-100 7-69 57
20
98.6 Cu, 0.8 Cd, 0.6 Sn 98.3 Cu, 1.7 Be, 0.20 Co 98.1 Cu, 1.9 Be, 0.20 Co 98.1 Cu, 1.9 Be, 0.40 Pb 96.9 Cu, 2.5 Co, 0.6 Be
C16500
40-95 14-71 53
20
C17000 Beryllium copper
70-190 32- 170
45
20
C17200 Beryllium copper C17300 Beryllium copper C17500, C17510 Beryllium copper C18200, C18400, C18500 Chromium copper
68-212 25- 195
48
20 Similar to C17000, particularly for its nonsparking characteristics.
68-212 25- 195
48
50 Combines superior machinability with good fabricating characteristics of C17200.
Fabricating characteristics same as C16200. Uses: fuse clips, fasteners, springs, switch and relay parts, electrical conductors, welding equipment. Excellent cold workability, good hot workability. Uses: resistance-welding electrodes, seam-welding wheels, switch gear, electrode-holder jaws, cable connectors, current-carrying arms and shafts, circuit-breaker parts, molds, spot-welding tips, flash-welding electrodes, electrical and thermal conductors requiring strength, switch contacts. Good cold workability; poor hot formability. Uses: connectors, motor and switch parts, screw-machine parts requiring high conductivity. Fabricating characteristics same as C10100. Uses: welding rod and wire for inert gas tungsten arc and metal arc welding, and oxyacetylene welding of copper. Fabricating characteristics same as C10100. Uses: springs, clips, electrical connectors, power tube and electron tube components, high-strength electrical conductors, bolts, nails, screws, cotter pins, and parts requiring some combination of high strength, high electrical or thermal conductivity, high resistance to fatigue and creep, and good workability. Good hot and cold workability. Uses: forgings and screw-machine parts requiring high strength, hardenability, extensive machining, corrosion resistance, copper color, good conductivity, or a combination of these; bolts, bushings, electrical connectors, gears, marine hardware, nuts, pinions, tie rods, turnbuckle barrels, welding torch tips. Excellent hot and cold workability. Uses: automotive hydraulic brake lines, flexible hose, electrical terminals, fuse clips, gaskets, gift hollow ware, applications requiring resistance to softening and stress corrosion, air-conditioning and heat-exchanger tubing.
45-115 25- 110
28
99.2 Cu 34-86 14-77 40
20
C18700 Leaded copper
99.0 Cu, 1.0 Pb 32-55 10-50 45
85
98.7 Cu, 0.8 Sn, 0.3 Si, 0.20 Mn
C18900
38-95 9-52 48
20
C19000 Copper-nickel-phos phorus alloy
98.6 Cu, 1.1 Ni, 0.3 P
38-115 20-81 50
30
98.2 Cu, 1.1 Ni, 0.5 Te, 0.2 P
C19100 Copper-nickel-phos phorus-tellurium alloy
36-104 10-92 27
75
99 Cu,
C19200
1.0 Fe, 0.03 P
37-77 11-74 40
20
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