C92300

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Continuous Cast

Lead improves machinability in C923 leaded tin bronze but does not materially affect mechanical properties. This alloy is a free-cutting version of tin bronze, having similar properties and uses.

C92300

Product Description:. Leaded Tin Bronze
Solids: 1/2" to 13" O.D.
Tubes: 1" to 16" O.D.
Rectangles: Up to 20"
Standard Lengths: 144"
Shape/Form: semi-finished, mill stock or near-net shapes, anode, bar stock, billet/bloom, squares, hex, plate, profile or structural shape, flats/rectangular bar

Typical Uses

Builders Hardware: structural castings
Fasteners: nuts
Industrial: bearings, bushings, gears, high pressure hydraulic equipment, piston rings, pump impellers, pump parts, valve bodies
Plumbing: high-pressure steam equipment

Similar or Equivalent Specification

CDA ASTM SAE AMS Federal Military Other
C92300 B505
B505M
B143-2B
621
J461
J462
  QQ-C-390, D3;
QQ-B-1005, Comp 6
MIL-B-11553, Comp 6  

Chemical Composition

Cu%1 Pb% Sn% Zn% Fe% P% Ni%1,2 Al% S% Sb% Si%
Chemical Composition according to ASTM B505/B505M-18

1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.
Note: Cu + Sum of Named Elements, 99.3% min. Single values represent maximums.
85.00-
89.00
0.30-
1.00
7.50-
9.00
2.50-
5.00
 
0.25
 
1.50
 
1.00
 
0.005
 
0.05
 
0.25
 
0.005

Machinability

Copper Alloy UNS No. Machinability Rating Density (lb/in3 at 68° F)
C92300 42 0.317

Mechanical Properties

Mechanical Properties according to ASTM B505/B505M-18
Tensile Strength, min Yield Strength, at 0.5% Extension Under Load, min Elongation, in 2 in. or 50 mm min Brinell Hardness (500 kg load) Remarks
ksi MPa ksi MPa % typical BHN  
40 276 19 131 16 70  

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 0.317 lb/in3 at 68 °F 8.77 gm/cm3 at 20 °C
Specific Gravity 8.77 8.77
Electrical Conductivity 12% IACS at 68 °F 0.07 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 68-392 10 · 10-6 per °F (68-392 °F) 17.3 · 10-6 per °C (20-200 °C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of Elasticity in Tension 14000 ksi 96500 MPa
Incipient Melting 600 °F 316 °C

Fabrication Properties

Fabrication Properties provided by CDA

*Since brazing is performed within the hot-short range, strain must be avoided during brazing and cooling.
Technique Suitability
Soldering Excellent
Brazing* Good
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended
Machinability Rating 42

Thermal Properties

Thermal Properties provided by CDA

*Temperature is measured in Fahrenheit.   **For Stress Relief, Solution Treatment and Annealing - Time is measured in hours/inch of thickness. For Precipitation Heat Treatment - Time is measured in hours.
Treatment Value* Time**
Stress Relief 500  
Solution Treatment   0

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