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Copper Alloy No.
C92200
Navy M Bronze CDA 922 ,
SAE 622 Steam Bronze , 88-6-2-4
ASTM B 505 , ASTM B 271
Chemical Composition % by
weight
| Element |
Nominal |
Minimum |
Maximum |
| Aluminum |
- |
- |
.005 |
| Antimony |
- |
- |
.25 |
| Copper |
88 |
86 |
90 |
| Iron |
- |
- |
.25 |
| Lead |
1.5 |
1 |
2 |
| Nickel |
- |
- |
1 |
| Phosphorus |
- |
- |
.05 |
| Silicon |
- |
- |
.005 |
| Sulfur |
- |
- |
.05 |
| Tin |
6 |
5.5 |
6.5 |
| Zinc |
4.5 |
3 |
5 |
Applications
Valves, fittings, pressure containing
parts for use up to 550 F.
Mechanical Properties
M07 - As Continuous Cast
| Hardness* |
Brinell Hardness (500 kg
load) |
65 |
| Tensile Strength** |
KSI |
38 min |
| Yield Strength ** |
KSI (0.5% Ext. under load) |
25 min |
| Elongation** |
% in 2 inch |
18 min |
**Test values are nominal approximations and depend on specimen
size and orientation.
Physical Properties
| Thermal Conductivity |
BTU/ (sq ft-ft-hr-F) |
40.2 |
| Specific Heat |
BTU/lb/ºF @ 68F |
.09 |
| Thermal Expansion |
Per °F from 68 F to 572 F |
.000010 |
| Density |
lb/cu in @ 68 F |
.312 |
| Electrical Conductivity* (Annealed) |
% IACS @ 68 F |
14.3 |
| Modulus of Elasticity |
KSI |
14,000 |
*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) |
42 |
| Suitability for being joined by: |
Soldering/Excellent |
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Brazing/Excellent* |
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Oxyacetylene Welding/Fair |
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Gas Shielded Arc Welding/Fair |
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Coated Metal Arc Welding/Fair |
*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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