Copper Alloy No. C95500
Aluminum Bronze 9D, CDA 955 Nickel Aluminum Bronze , Grade D
ASTM B 505 , ASTM B 271
Chemical Composition % by weight
Element Nominal Minimum Maximum Aluminum 11 10 11.5 Copper 81 78 - Iron 4 3 5 Manganese - - 3.5 Nickel 4 3 5.5
Applications
Valve guides and seats in aircraft engines, corrosion resistant parts, bearings, bushings, gears, worm gears, pickling hooks and baskets, agitators.
Mechanical Properties (as cast)
M07 - As Continuous Cast
Hardness* Brinell Hardness (3000 kg load) 190 Tensile Strength** KSI 95 min Yield Strength ** KSI (0.5% Ext. under load) 42 min Elongation** % in 2 inch 10 **Test values are nominal approximations and depend on specimen size and orientation.
Physical Properties
Thermal Conductivity BTU/ (sq ft-ft-hr-F) 24.2 Specific Heat BTU/lb/ºF @ 68F .10 Thermal Expansion Per °F from 68 F to 572 F .000009 Density lb/cu in @ 68 F .272 Electrical Conductivity* (Annealed) % IACS @ 68 F 8.5 Modulus of Elasticity KSI 16,000 *Volume basis
Fabrication Practices
Stress relieving temperature 600 F or 316 C Time at temperature 1 hour per inch of section thickness Responds to heat treatment Yes Solution heat treating temperature 1585-1635 F or 860-890 C Time at temperature 1 hour per inch of section thickness Quenching medium Water or oil quench Annealing temperature 1150-1225 F or 620-660 C Time at temperature 1 hour per inch of section thickness Machinability rating (Free Cutting Brass=100) 50 Suitability for being joined by: Soldering/Good Brazing/Fair Oxyacetylene Welding/Not Recommended Carbon Arc Welding/Poor Gas Shielded Arc Welding/Good Coated Metal Arc Welding/Good 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.