Manufacturer of custom machined parts, specializing in bronze and other alloys for your engineered applications
419.223.1075
1046 Greenlawn Ave, Lima OH 45804
NOW HIRING
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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