CDA 905 Tin Bronze Alloys

Specification :

CDA ASTM Asarcon SAE AMS Federal Military Other
C905 B505
B505M
B22
B22M
B143-1A
100 62
J461
J462
4845 QQ-C-390, D6
QQ-B-1005, COMP 16
MIL-B-11553, COMP 16 Gun Metal

Chemical Composition :

Cu%1 Pb% Sn% Zn% Fe% P%2 Ni%3 Al% S% Sb% Si%
Chemical Composition according to ASTM B505/B505M-18
1In determining Cu min., Cu may be calculated as Cu + Ni.   2For continuous castings, P shall be 1.5%, max.  3Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.7% min. Single values represent maximums.
86.00-
89.00
0.30 9.00-
11.00
1.00-
3.00
0.20 0.05 1.00 0.005 0.05 0.20 0.005

Machinability :

Alloy Machinability Rating Density (lb/in3 at 68 °F)
C905 30 0.315

Mechanical Properties :

Mechanical Properties according to ASTM B505/B505M-18
Tensile Strength, min Yield Strength, at .5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Brinell Hardness (500 kg load) Remarks
ksi MPa ksi MPa % typical BHN
44 303 25 172 10

Physical Properties :

Physical Properties provided by CDA
US Customary Metric
Melting Point – Liquidus 1830 °F 999 °C
Melting Point – Solidus 1570 °F 854 °C
Density 0.315 lb/in3 at 68 °F 8.72 gm/cm3 at 20 °C
Specific Gravity 8.72 8.72
Electrical Conductivity 11% IACS at 68 °F 0.064 MegaSiemens/cm at 20 °C
Thermal Conductivity 43.2 Btu/sq ft/ft hr/°F at 68 °F 74.8 W/m at 20 °C
Coefficient of Thermal Expansion 68-572 11 · 10-6 per °F (68-572 °F) 19.8 · 10-6 per °C (20-300 °C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 293 °C
Modulus of Elasticity in Tension 15000 ksi 103400 MPa
Magnetic Permeability* 1 1

Fabrication Properties :

Fabrication Properties provided by CDA
Joining Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair

Thermal Properties :

Thermal Properties provided by CDA
Treatment Temp./Time – US Temp./Time – SI
Stress Temperature 500 260
Solution Minimum
Solution Maximum
Solution Time 0.0
Solution Medium
Precipitation Value
Precipitation Time
Precipitation Medium
Annealing Minimum
Annealing Maximum
Annealing Time
Hot Works Minimum
Hot Works Maximum