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C86200

Stocked alloy specs

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Reference guide

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Continuous cast

Manganese bronze alloys can operate under very high loads and speeds. Besides excellent mechanical qualities, these alloys have good corrosion resistance. The standard alloy in this group is high tensile C86300, which is comprised of copper, manganese, aluminum, and iron. This combination raises the tensile strength to over 110,000 ksi.

C86200 spec sheet Standard products

C86200

Product description: Manganese bronze
Solids: 1/2" to 9" O.D.
Tubes: 1 1/8 " to 9" O.D.*
Rectangles: Up to 15"
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, structural parts
Fasteners: screw down nuts
Industrial: bushings, cams, frames, gears, high-strength machine parts, hooks, marine racing pro, press dies, shafts, struts, valve stems, wear rings, worm gears
Marine: boat parts, clamps, marine castings, rudders
Ordnance: gun mounts

Similar or equivalent specification

CDA ASTM SAE AMS Federal Military Other
C86200 B505
B505M
B271
B271M		 J461
J462		   QQ-C-523 MIL-C-11866  

Chemical composition

Cu%1 Pb% Sn% Zn% Fe% Ni%1,2 Al% Mn%
Chemical composition according to ASTM B505/B505M-23

1In determining Cu min., Cu may be calculated as Cu + Ni.   2Ni value includes Co.
Note: Single values represent maximums.
60.00-
66.00		  
0.20		  
0.20		 22.00-
28.00		 2.00-
4.00		  
1.00		 3.00-
4.90		 2.50-
5.00

Machinability

Copper alloy UNS No. Machinability rating Density (lb/in3 at 68 °F)
C86200 30 0.288

Mechanical properties

Mechanical properties according to ASTM B505/B505M-23
Tensile strength, min Yield strength, at 0.5% extension under load, min Elongation, in 2 in. or 50 mm min Brinell hardness (3000 kg load) Remarks
ksi MPa ksi MPa % typical BHN  
90 621 45 310 18 180

Physical properties

Physical properties provided by CDA
*Field strength 16kA/m
  US Customary Metric
Melting point - liquidus 1725 °F 941 °C
Melting point - solidus 1650 °F 899 °C
Density 0.288 lb/in3 at 68 °F 7.97 gm/cm3 at 20 °C
Specific gravity 7.97 7.97
Electrical conductivity 8% IACS at 68 °F 0.044 MegaSiemens/cm at 20 °C
Thermal conductivity 20.5 Btu/sq ft/ft hr/°F at 68 °F 35.5 W/m at 20 °C
Coefficient of thermal expansion 68-572 12 · 10-6 per °F (68-572 °F) 20.7 · 10-6 per °C (20-300 °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 103400 MPa
Magnetic Permeability* 1.24 1.24

Fabrication properties

Fabrication properties provided by CDA
Technique Suitability
Soldering Poor
Brazing Poor
Oxyacetylene welding Good
Gas shielded arc welding Fair
Coated metal arc welding Good
Machinability rating 30

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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