C93800

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SPECIFICATION CROSS-REFERENCE CHART

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.

Info

Product Description: High-Leaded Tin Bronze
Solids: 1/2" to 10" OD
Tubes: 1" to 16" OD
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

Industrial: bearings, railroad engine casings, pumps, industrial centrifuges, machine parts, low friction, moderate pressure bushings, railroad applications, acid resisting applications, backs for lined journal bearings for passenger cars, general service bearings for moderate pressure, wearing material for rod bushings, wearing material for wedges, wearing material for shoes, pump impellers for acid mine water, pump bodies for acid mine water, freight car bearings, backs for lined journal bearings for locomotives
Marine: large bearings for ships

Similar or Equivalent Specification

CDA ASTM ASARCON SAE AMS Federal Military Other Desc
C93800 B505
B66
B144, 3D
715     QQ-C-390, E6;
QQ-B-1005, COMP 19
MIL-B-11553, COMP 19 ANTI-ACID METAL

Chemical Composition (according to ASTM B505/B505M-14)

Cu% Sn% Pb% Zn% Fe% Ni%1 Sb% P%2 S% Al% Si%
1Ni value includes Co.   2For continuous castings, P shall be 1.5%, max.
Note: Cu + Sum of Named Elements, 99.0% min. Single values represent maximums.
75.00-
79.00
6.30-
7.50
13.00-
16.00
 
0.80
 
0.15
 
1.00
 
0.80
 
0.05
 
0.08
 
0.005
 
0.005

Mechanical Properties (according to ASTM B505/B505M-14)

Tensile Strength (min) Yield Strength (at .5% extension under load min) Elongation (in 2in. or 50mm min, %) Brinell Hardness (min) Remarks
Ksi MPa Ksi MPa      
25 172 16 110 5  

Machinability

Alloy Rating Density
C93800 80 0.334

Physical Properties (provided by CDA)

  US Customary Metric
Melting Point - Liquidus 1730° F 943° C
Melting Point - Solidus 1570° F 854° C
Incipient Melting 600° F 316° C
Density 0.334 lb/in3 at 68° F 9.25 gm/cm3 at 20° C
Specific Gravity 9.25 9.25
Electrical Resistivity 91.10 ohms-cmil/ft at 68° F 15.15 microhm-cm at 20° C
Electrical Conductivity 11% IACS at 68° F 0.066 MegaSiemens/cm at 20° C
Thermal Conductivity 30.20 Btu · ft/(hr · ft2 · °F) at 68° F 52.3 W/m at 20° C
Coefficient of Thermal Expansion 10.3 · 10-6 per °F (68°-392° F) 17.8 · 10-6 per °C (20°-200° C)
Specific Heat Capacity 0.090 Btu/lb/°F at 68° F 377.1 J/kg at 293° C
Modulus of Elasticity in Tension 10500 ksi 72400 MPa
Magnetic Permeability 1.0 1.0

Fabrication Properties (provided by CDA)

Joining Technique Suitability
Soldering Good
Brazing Poor
Oxyacetylene Welding Not Recommended
Gas Shielded Arc Welding Not Recommended
Coated Metal Arc Welding Not Recommended

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 None
Precipitation Value    
Precipitation Time    
Precipitation Medium None
Annealing Minimum    
Annealing Maximum    
Annealing Time  
Hot Works Minimum    
Hot Works Maximum    

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