C92700

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SPECIFICATION CROSS-REFERENCE CHART

The lead content in these bronze alloys is between 7 percent and 15 percent. High leaded tin bronzes alloys are free cutting and retain favorable thermal conductivity and good lubricity due to the lead content. Alloy C93200 is considered this family’s workhorse alloy and is widely used in many bearing applications.

Info

Product Description:. Leaded Tin Bronze
Solids: 1/2" to 13" 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

Fasteners: lead screw nuts
Industrial: gears, pump impellers, bearings, heavy-duty bearings, pump pistons, bushings, steam fittings

Similar or Equivalent Specification

CDA ASTM ASARCON SAE AMS Federal Military Other
C92700 B505 102 63
J461
J462
       

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

Alloy Cu%1 Sn% Pb% Zn% Fe% Ni%2 Sb% P%3 S% Al% Si%
1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.   3For continuous castings, P shall be 1.5%, max.
Note: Cu + Sum of Named Elements, 99.3% min. Single values represent maximums.
C92700 86.00-
89.00
9.00-
11.00
1.00-
2.50
 
0.70
 
0.20
 
1.00
 
0.25
 
0.25
 
0.05
 
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      
38 252 20 138 8 N/A

Machinability

Alloy Rating Density
C92700 45 0.317

Physical Properties (provided by CDA)

  US Customary Metric
Melting Point - Liquidus 1800° F 982° C
Melting Point - Solidus 1550° F 843° C
Incipient Melting 600° F 316° C
Density 0.317 lb/in3 at 68° F 8.78 gm/cm3 at 20° C
Specific Gravity 8.78 8.78
Electrical Resistivity 940 ohms-cmil/ft at 68° F 15.63 microhm-cm at 20° C
Electrical Conductivity 11% IACS at 68° F 0.064 MegaSiemens/cm at 20° C
Thermal Conductivity 27.20 Btu · ft/(hr · ft2 · °F) at 68° F 47.0 W/m at 20° C
Coefficient of Thermal Expansion 10.0 · 10-6 per °F (68°-392° F) 17.3 · 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 16000 ksi 110000 MPa

Fabrication Properties (provided by CDA)

Joining Technique Suitability
Soldering Excellent
Brazing Good
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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