C90300

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SPECIFICATION CROSS-REFERENCE CHART

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Cast

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: Tin Bronze
Solids: 1/2" to 10" OD
Tubes: 1" to 16" OD
Rectangles: Up to 20" wide
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
Benefits: Hardness, good corrosion resistance, high wear resistance, moderate machinability, proven alloys in wide uses

Typical Uses

Building: heavy construction equipment
Fasteners: swivel
Industrial: bearings, bushings, gear blanks, gears, piston rings, pump bodies, pump impellers, valve bodies, valves
Plumbing: steam fittings

Similar or Equivalent Specification

CDA ASTM ASARCON SAE AMS Federal Military Other
C90300 B505-08            

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, 99.4% min. Single values represent maximums.
C90300 86.00-
89.00
7.50-
9.00
 
0.30
3.00-
5.00
 
0.20
 
1.00
 
0.20
 
1.50
 
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, %) Hardness (typical Bhn - 500kg) Remarks
Ksi MPa Ksi MPa      
44 22 18 70

Machinability

Alloy Rating Density
C90300 30 0.318

Physical Properties (provided by CDA)

  US Customary Metric
  • * Field Strength 16 kA/m
Melting Point - Liquidus 1832° F 1000° C
Melting Point - Solidus 1570° F 854° C
Density 0.318 lb/in3 at 68° F 8.8 gm/cm3 at 20° C
Specific Gravity 8.80 8.80
Electrical Conductivity 12% IACS at 68° F 0.069 MegaSiemens/cm at 20° C
Thermal Conductivity 43.2 Btu · ft/(hr · ft2·°F) at 68° F 74.8 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 14000 ksi 96500 MPa
Magnetic Permeability* 1.0 1.0

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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