Machinery's Handbook, 31st Edition
514
Cast CopperS AND COPPER Alloys 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
Bearings, gears, impellers, rocker arms, valve stems, small boat propellers. High-strength, thin-wall die castings; brush holders, lever arms, brackets, clamps, hexagonal nuts. General-purpose die-casting alloy having moderate strength. Valve stems.
C87500 82 Cu, 14 Zn, 4 Si C87600 90 Cu, 5.5 Zn, 4.5 Si
67 66 85
30 32 50
21 20 25
50 40 40
C87800 82 Cu, 14 Zn, 4 Si
C87900 65 Cu, 34 Zn, 1 Si
70
35
25
80
Tin Bronzes
C90200 93 Cu, 7 Sn
38 45
16 21
30 30
20 Bearings and bushings.
Bearings, bushings, pump impellers, piston rings, valve components, seal rings, steam fittings, gears.
C90300 88 Cu, 8 Sn, 4 Zn
30
C90500 88 Cu, 10 Sn, 2 Zn C90700 89 Cu, 11 Sn C90900 87 Cu, 13 Sn C91000 85 Cu, 14 Sn, 1 Zn C91100 84 Cu, 16 Sn
45
22
25
30 Bearings, bushings, pump impellers, piston rings, valve components, steam fittings, gears.
44 (55) 22 (30) 20 (16)
20 Gears, bearings, bushings. 20 Bearings and bushings. 20 Piston rings and bearings.
40 32 35 35
20 25 25 30
15
2 2
10 Piston rings, bearings, bushings, bridge plates. 10 Piston rings, bearings, bushings, bridge plates, bells.
C91300 81 Cu, 19 Sn
0.5
C91600 88 Cu, 10.5 Sn, 1.5 Ni C91700 86.5 Cu, 12 Sn, 1.5 Ni
44 (60) 22 (32) 16 (16) 44 (60) 22 (32) 16 (16)
20 20
Gears. Gears.
Leaded Tin Bronzes
Valves, fittings, and pressure-containing parts for use up to 550 ° F. Valves, pipe fittings, and high-pressure steam castings. Superior machinability to C90300.
C92200 88 Cu, 6 Sn, 1.5 Pb, 4.5 Zn C92300 87 Cu, 8 Sn, 4 Zn C92500 87 Cu, 11 Sn, 1 Pb, 1 Ni C92600 87 Cu, 10 Sn, 1 Pb, 2 Zn C92700 88 Cu, 10 Sn, 2 Pb C92800 79 Cu, 16 Sn, 5 Pb
40 40 44
20 20 20
30 25 20
42 42 30
Gears, automotive synchronizer rings.
Bearings, bushings, pump impellers, piston rings, valve components, steam fittings, and gears. Superior machinability to C90500.
44
20
30
40
42 40
21 30
20
45 Bearings, bushings, pump impellers, piston rings, and gears. Superior machinability to C90500.
1
70 Piston rings.
Gears, wear plates, guides, cams, parts requiring machinability superior to that of C91600 or 91700.
C92900 82 Cu min, 9 Sn min, 2 Pb min, 2.8 Ni min 47 (47) 26 (26) 20 (20)
40
High-Leaded Tin Bronzes
C93200 83 Cu, 6.3 Sn min, 7 Pb, 3 Zn C93400 84 Cu, 8 Sn, 8 Pb C93500 85 Cu, 5 Sn, 9 Pb
35 32 32
18 16 16
20 20 20
70
General-utility bearings and bushings.
70 Bearings and bushings.
70 Small bearings and bushings, bronze backing for babbit-lined automotive bearings.
Bearings for high speed and heavy pressures, pumps, impellers, corrosion-resistant applications, pressure-tight castings. Bearings for general service and moderate pressure, pump impellers, and bodies for use in acid mine water. Continuous castings only. Bearings for general service, pump bodies, and impellers for mine waters. General-utility alloy for bushings and bearings. Locomotive wearing parts; high-low, low-speed bearings.
C93700 80 Cu, 10 Sn, 10 Pb
35
18
20
80
C93800 78 Cu, 7 Sn, 15 Pb
30
16
18
80
C93900 79 Cu, 6 Sn, 15 Pb C94300 70 Cu, 5 Sn, 25 Pb C94400 81 Cu, 8 Sn, 11 Pb, 0.35 P C94500 73 Cu, 7 Sn, 20 Pb
32 27 32 25
22 13 16 12
7
80
15 18 12
80 High-speed bearings for light loads.
80 80
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