C91700

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SPECIFICATION CROSS-REFERENCE CHART

Tin bronze alloys are typically found in gear, high-strength bushing and bearing applications where high strength and low speeds and heavy loads are present. Other high-strength applications for these alloys are pump impellers, piston rings, steam fittings and valve bodies. Tin bronze castings are utilized in movable bridge components, turntables for bridges and other structures for fixed and expansion bearings with slow or intermittent movement with heavy loads.

Info

Product Description: High Tin Bronze
Solids: 1" to 6" OD
Tubes: 1" to 6" OD
Rectangles: Up to 10"
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: worm gears, conprise gears, heavy load/relatively low-speed bearings

Similar or Equivalent Specification

CDA ASTM ASARCON SAE AMS Federal Military Other
C91700 B427          

Nickel Gear Bronze

 

Chemical Composition (according to ASTM B427-09)

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, 99.4% min. Single values represent maximums.
C91700 84.00-
87.00
11.3-
12.5
 
0.25
 
0.25
 
0.20
1.2-
2.0
 
0.20
 
0.30
 
0.05
 
0.005
 
0.005

Machinability

Alloy Rating Density
C91700 20 0.320

Physical Properties (provided by CDA)

  US Customary Metric
Melting Point - Liquidus 1859° F 1015° C
Melting Point - Solidus 1563° F 851° C
Specific Gravity 8.75 8.75
Electrical Resistivity 103.7 ohms-cmil/ft at 68° F 17.24 microhm-cm at 20° C
Electrical Conductivity 10% IACS at 68° F 0.058 MegaSiemens/cm at 20° C
Thermal Conductivity 40.8 Btu · ft/(hr · ft² · °F) at 68° F 70.6 W/m at 20° C
Coefficient of Thermal Expansion 9.0 · 10⁻⁶ per °F (68°-392° F) 15.5 · 10⁻⁶ per °C (20-200° C)
Specific Heat Capacity 0.09 Btu/lb/°F at 68° F 377.1 J/kg at 293° C
Modulus of Elasticity in Tension 15000 ksi 103400 MPa

Fabrication Properties (provided by CDA)

Joining Technique Suitability
Soldering Excellent
Brazing Good
Oxyacetylene Welding Fair
Gas Shielded Arc Welding Fair
Coated Metal Arc Welding Fair

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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