C86700

Reference guide

C86700

Product description: Manganese bronze
Solids: 1/2" to 13" O.D.
Tubes: 1 1/8" 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

 *Consult mill for wall thickness

Typical uses

Builders hardware: Brackets
Fasteners: Screw down nuts
Industrial: Bearings, cams, fittings, lever arms, machinery parts, moderate duty gears, propellers, valve stems
Marine: Marine hardware, propellers

Chemical composition

Cu%1 Pb% Sn% Zn% Fe% Ni%2 Al% Mn%
Chemical composition provided by CDA

1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.
Note: Cu + sum of named elements, 99.0% min. Single values represent maximums.
55.00-
60.00
0.50-
1.50
 
1.50
30.00-
38.00
1.00-
3.00
 
1.00
1.00-
3.00
0.10-
3.50

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C86700 55 0.301

Mechanical properties

Mechanical properties provided by CDA
Tensile strength, min Yield strength, at 0.5% extension under load,, typ Elongation, in 2 in. or 50 mm typ Brinell hardness (3000 kg load)   Remarks
ksi MPa ksi MPa % typical BHN  
85 586 42 290 20 155  

Physical properties

Physical properties provided by CDA
  US Customary Metric
Melting point - liquidus 1616 °F 880 °C
Melting point - solidus 1583 °F 862 °C
Density 0.301 lb/in3 at 68 °F 8.33 gm/cm3 at 20 °C
Specific gravity 8.33 8.33
Electrical conductivity 17% IACS at 68 °F 0.097 MegaSiemens/cm at 20 °C
Coefficient of thermal expansion 11 · 10-6 per °F (68°-392 °F) 19 · 10-6 per °C (20°-200 °C)
Specific heat capacity 0.09 Btu/lb/°F at 68 °F 377.1 J/kg at 20 °C
Modulus of elasticity in tension 15000 ksi 103422 MPa

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Fair
Brazing Fair
Oxyacetylene welding Poor
Gas shielded arc welding Poor
Coated metal arc welding Poor
Machinability rating 55

Thermal properties

Thermal properties provided by CDA
*Temperature is measured in fahrenheit.   **For stress relief, solution treatment and annealing - time is measured in hours/inch of thickness. For precipitation heat treatment - time is measured in hours.
Treatment Value* Time**
Stress relief 500  
Solution treatment   0

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