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Copper Alloy No.
C92700
Leaded Tin Bronze SAE
63 , CDA 927
ASTM B 505
Chemical Composition % by
weight
| Element |
Nominal |
Minimum |
Maximum |
| Aluminum |
- |
- |
.005 |
| Antimony |
- |
- |
.25 |
| Copper |
88 |
86 |
89 |
| Iron |
- |
- |
.20 |
| Lead |
2 |
1 |
2.5 |
| Nickel |
- |
- |
1 |
| Phosphorus |
- |
- |
.25 |
| Silicon |
- |
- |
.005 |
| Sulfur |
- |
- |
.05 |
| Tin |
10 |
9 |
11 |
| Zinc |
- |
- |
.7 |
Applications
Bearings, bushings, pump impellers,
piston rings, valve components, steam fittings, gears.
Mechanical Properties
M07 - As Continuous Cast
| Hardness* |
Brinell Hardness (500 kg
load) |
77 |
| Tensile Strength** |
KSI |
38 min |
| Yield Strength ** |
KSI (0.5% Ext. under load) |
20 min |
| Elongation** |
% in 2 inch |
8 min |
**Test values are nominal approximations and depend on specimen
size and orientation.
Physical Properties
| Thermal Conductivity |
BTU/ (sq ft-ft-hr-F) |
N/A |
| Specific Heat |
BTU/lb/ºF @ 68F |
.09 |
| Thermal Expansion |
Per °F from 68 F to 350 F |
.000010 |
| Density |
lb/cu in @ 68 F |
.315 |
| Electrical Conductivity* (Annealed) |
% IACS @ 68 F |
11 |
| Modulus of Elasticity |
KSI |
16,000 |
*Volume basis
Fabrication Practices
| Stress relieving temperature |
500 F or 260 C |
| Time at temperature |
1 hour per inch of section
thickness |
| Responds to heat treatment |
No |
| Machinability rating (Free Cutting
Brass=100) |
45 |
| Suitability for being joined by: |
Soldering/Excellent |
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Brazing/Good* |
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Oxyacetylene Welding/Not
Recommended |
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Gas Shielded Arc Welding/Not
Recommended |
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Coated Metal Arc Welding/Not
Recommended |
*Since brazing is performed at temperatures
within the hot-short range, strain must be avoided during the brazing and
cooling of this alloy.
The values listed above represent reasonable
approximations suitable for general engineering use. Due to commercial
variations in composition and to manufacturing limitations, they should not
be used for specification purposes. See applicable A.S.T.M. specification
references.
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