Cast C67300
Tough and corrosion resistant, C67300 manganese bronze, also known as C673, is a high tensile bronze ideal for high-load, low-speed applications that require a combination of outstanding wear characteristics and high bearing strength.
Information
Product description: Manganese Bronze
TEMPERS: H02 Half Hard
Solids: 3/4" to 3" O.D.
HEX: Consult Mill
Rectangles: Consult Mill
Standard lengths: 144”
Typical uses
Fasteners: fasteners, lead screw nuts
Industrial: bearings, bearings (pins) bushings, clutch bearings, drive shafts, gears and cams, idler pins, piston heads, propeller shafts, pump parts, seal rings, shaft bushings, sleeve bearings, spindles, thrust bearings, wear plates
MARINE: hardware, valve seats
OTHER: connecting rods
Similar or equivalent specification
| CDA | ASTM | SAE | AMS | Federal | Military | Other |
|---|---|---|---|---|---|---|
| C67300 | J461 J463 |
Chemical composition
| Cu% | Pb% | Sn% | Zn% | Fe% | Al%1 | Al% | Mn% | Si% |
|---|---|---|---|---|---|---|---|---|
| 58.00-63.00 | 0.40-3.00 | 0.30 | Rem. | 0.50 | 0.25 | 0.25 | 2.00-3.50 | 0.50-1.50 |
Chemical composition according to SAE J463
¹Ni value includes Co
Note: Single values represent maximums.
Machinability
| Copper alloy UNS no. | Machinability rating | Density (lb / in³ at 68 °F) |
|---|---|---|
| C67300 | 70 | 0.300 |
Mechanical properties
Mechanical properties according to SAE J463
H02 Half Hard
Size Range: Up 1" Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | min HRB | |
| 65 | 448 | 40 | 276 | 12 | 70 | |
Size Range: Over 1" to 3" Inclusive
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4x Diameter or Specimen Thickness, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | min HRB | |
| 58 | 400 | 35 | 241 | 15 | 70 | |
Size Range: Over 3"
| Tensile strength, min | Yield strength, at 0.5% extension under load, min | Elongation, in 4D, min | Rockwell "B" Hardness | Remarks | ||
|---|---|---|---|---|---|---|
| ksi | MPa | ksi | MPa | % | min HRB | |
| 55 | 380 | 30 | 205 | 18 | 65 | |
Physical properties
| US Customary | Metric | |
|---|---|---|
| Melting point - liquidus | 1605 °F | 874 °C |
| Density | 0.3 lb/in³ at 68 °F | 8.3 gm/cm³ at 20 °C |
| Specific gravity | 8.3 | 8.3 |
| Electrical conductivity | 22% IACS at 68 °F | 0.13 MegaSiemens/cm at 20 °C |
| Thermal conductivity | 55 Btu/sq ft/ft hr/°F at 68 °F | 95 W/m at 20 °C |
| Coefficient of thermal expansion 68-572 | 11 · 10-6 per °F (68-572 °F) | 19 · 10-6 per °C (20-300 °C) |
| Modulus of elastic in tension | 17000 ksi | 117212 MPa |
Fabrication properties
| Technique | Suitability |
|---|---|
| Machinability rating | 70 |