Producer of custom machined parts, specializing in bronze and other popular alloys for your manufacturing needs.
BRONZE BASED ALLOYS
C93700
CAST C93700
The lead content in these alloys is between 7 percent and 30 percent. High-leaded tin bronzes are free cutting and retain favorable thermal conductivity and good lubricity due to the lead content. The high-leaded tin bronzes are ideal for bearing applications where there could be a loss of the lubrication boundary. These alloys perform excellent in unforgiving environments where foreign matter may be present, such as dirt and other foreign materials. The high-leaded alloys are able to envelope foreign matter due to their malleable nature and, in doing so, protect the wear surface of a mating part such as a shaft.
INFORMATION
PRODUCT DESCRIPTION: High-Leaded Tin Bronze
SOLIDS: 1/2" to 10" 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: brackets
FASTENERS: nuts, washers for engines
INDUSTRIAL: applications requiring acid resistance to sulphite fluids, bearing plates, bearings, bushings, bushings for high speed and heavy pressure, corrosion-resistant castings, crank shafts, high speed/heavy load bearings, impellers, machine parts, parts for steel mill maintenance, pressure-tight castings, pumps, slide guides for steel mills
MARINE: large bearings for ships
SIMILAR OR EQUIVALENT SPECIFICATION
CDA
ASTM
SAE
AMS
Federal
Military
Other
C93700
B505 B505M
J461 J462
QQ-C-390, E10
MIL-B-11553, Comp 23
Bearing Bronze; 80-10-10 Bronze
CHEMICAL COMPOSITION
Cu%
Pb%
Sn%
Zn%
Fe%1
P%
Ni%2
Al%
S%
Sb%
Si%
78.00-82.00
8.00-11.00
9.00-11.00
0.80
0.70
1.50
0.50
0.005
0.08
0.50
0.005
MACHINABILITY
Copper Alloy UNS No.
Machinability Rating
Density(lb / in 3 at 68 °F)
C93700
80
0.32
MECHANICAL PROPERTIES
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
35
241
20
138
6
60
PHYSICAL PROPERTIES
US Customary
Metric
Melting Point - Liquidus
1705 °F
929 °C
Melting Point - Solidus
1403 °F
762 °C
Density
0.32 lb/in3 at 68 °F
8.86 gm/cm3 at 20 °C
Specific Gravity
8.86
8.86
Electrical Conductivity
10% IACS at 68 °F
0.059 MegaSiemens/cm at 20 °C
Thermal Conductivity
27.1 Btu/sq ft/ft hr/°F at 68 °F
46.9 W/m at 20 °C
Coefficient of Thermal Expansion 68-572

10.3 · 10-6 per °F (68-212 °F)

17.8 · 10-6 per °C (20-100 °C)

Specific Heat Capacity
0.09 Btu/lb/°F at 68 °F
377.1 J/kg at 20 °C
Modulus of Elastic in Tension
11000 ksi
75800 MPa
Incipient Melting
600 °F
316 °C
Magnetic Permeability
1
1
FABRICATION PROPERTIES
Technique
Suitability
Soldering
Excellent
Brazing*
Good
Oxyacetylene Welding
Fair
Gas Shielded Arc Welding
Fair
Coated Metal Arc Welding
Fair
Machinability Rating
20
THERMAL PROPERTIES
Treatment
Value*
Time**
Stress Relief
500
Solution Treatment
0


SPEC SHEET


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