Cast C86300
Manganese bronze alloys, such as C863, can operate under very high loads and speeds. However, bearing applications require reliable lubrication. Besides excellent mechanical qualities, these alloys have good corrosion resistance. The combination of copper, manganese, aluminum and iron in C86300 raises its tensile strength to over 110,000 KSI.
Information
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
Typical uses
BUILDERS HARDWARE: brackets
ELECTRICAL: electrical components, switches
Fasteners: screw down nuts
Industrial: bridge pins, bushings, cams, forming dies for wood pulp industry, frames, gears, gib, high-strength machine parts, hooks, hydraulic cylinder parts, large valve stems, propellers, slow-speed/heavy-load bearings, struts, wear rings for forming dies for wood pulp industry
MARINE: boat parts, clamps, covers for marine hardware, marine hardware, rudders
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C86300 | 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% |
|---|---|---|---|---|---|---|---|
| 60.00-66.00 | 0.20 | 0.20 | 22.00-28.00 | 2.00-4.00 | 1.00 | 5.00-7.50 | 2.50-5.00 |
Chemical composition according to ASTM B505/B505M-23
¹In determining Cu min., Cu may be calculated as Cu + Ni. ²Ni value includes Co.
Note: Cu + sum of named elements, 99.5% min. Single values represent maximums.
Machinability
| Copper alloy UNS no. | Machinability rating | Density (lb / in³ at 68°F) |
|---|---|---|
| C86300 | 8 | 0.283 |
Mechanical properties
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 2 in. or 50 mm min | Brinell hardness (500 kg load) | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | typical BHN | |
| 110 | 758 | 62 | 427 | 14 | 223 | |
Mechanical properties according to ASTM B505/B505M-23
Note: Compression Deformation Limit min 55 ksi/380 MPa
Physical properties
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1693 °F | 923 °C |
| Melting point - solidus | 1625 °F | 885 °C |
| Density | 0.283 lb/in³ at 68 °F | 7.83 gm/cm³ at 20 °C |
| Specific gravity | 7.83 | 7.83 |
| Electrical conductivity | 8% IACS at 68 °F | 0.046 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 elastic in tension | 14200 ksi | 97900 MPa |
| Magnetic permeability* | 1.09 | 1.09 |
Fabrication properties
| Technique | Suitability |
|---|---|
| Soldering | Poor |
| Brazing | Poor |
| Oxyacetylene welding | Poor |
| Gas shielded arc welding | Poor |
| Coated metal arc welding | Poof |
| Machinability rating | 8 |
Thermal properties
| Treatment | Value* | Time** |
|---|---|---|
| Stress relief | 500 | |
| Solution treatment | 0 |
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.