Products
C66800
Manganeze Bronze Alloy
MUELLER Alloy 6680 is a non-leaded copper-base alloy (manganese bronze) with relatively good ductility and fair machinability. It can be used with soft or hard mating members where moderate strength is sufficient. C66800 is a high tensile brass containing silicon and manganese. In conjunction with good fatigue strength, this alloy possesses excellent wear resistance.
Chemistry
| Cu | Pb | Fe | Zn | P | As | Sn | Al | Mn | Ni | Si | Others |
|---|---|---|---|---|---|---|---|---|---|---|---|
| 60.0 - 63.0 | 0.5 MAX | 0.35 MAX | REM | NA | NA | 0.3 MAX | 0.25 MAX | 2.0 - 3.5 | 0.25 MAX | 0.5 - 1.5 | NA |
Shapes & Sizes
| Rounds | Hex | Square | Octagon | Rectangle | Special Shapes |
|---|---|---|---|---|---|
| 0.375" to 4.000" | Consult Mill | Consult Mill | Consult Mill | Consult Mill | Consult Mill |
Minimal Mechanical Tolerances
| Tensile Strength (KSI) | Yield Strength (KSI) | Elongation % | Rockwell B Hardness |
|---|---|---|---|
| 72 - 80 | 50 - 62 | .15 - .25 | 135 - 165 |
Tolerances (Rounds)
| .0250" to 0.375" | 0.375" to 0.500" | 0.500" to 1.000" | 1.000" to 2.000" | 2.000" to 2.500" | 2.500" to 3.000" | 3.000" to 3.500" | 3.500" to 4.000" |
|---|---|---|---|---|---|---|---|
| NA | +/-0.0015 | +/-0.0020 | +/-0.0025 | 0.15% of Diam. | +/-0.0035 | +/-0.0045 | +/-0.0050 |
Tolerances (Hex)
| .0250" to 0.375" | 0.375" to 0.500" | 0.500" to 1.000" | 1.000" to 2.000" | 2.000" to 2.500" | 2.500" to 3.000" | 3.000" to 3.500" | 3.500" to 4.000" |
|---|---|---|---|---|---|---|---|
| NA | +/-0.0030 | +/-0.0040 | +/-0.0050 | .30% of Diam | +/-0.0075 | +/-0.0090 | +/-0.0100 |
Machinability
| Lathe Speed | Lathe Feed | Lathe Back Rack Angle | Lathe Clearance Angle | Drill Speed | Drill Feed | Drill Back Rack Angle | Drill Clearance Angle | Milling Cutters Speed | Milling Cutters Feed | Milling Cutters Back Rack Angle | Milling Cutters Clearance Angle | Form Tools Speed | Form Tools Feed | Form Tools Back Rack Angle | Form Tools Clearance Angle | Taps Speed | Tap Feed | Tap Back Rack Angle | Tap Clearance Angle |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA | D/NA |
Specifications. Equal.
| Option 1 | Option 2 | Option 3 | Option 4 | Option 5 | Option 6 | Option 7 |
|---|---|---|---|---|---|---|
Workability
| Cold Working Capacity | Thread Rolling | Cold Heading | Hot Working Capacity | Machinability Rating |
|---|---|---|---|---|
| Good | D/NA | Good | Good | 40 |
Applications / Markets
| Transportation | Plumbing | Defense | Refrigeration | Medical | Industrial | Builder's Hardware | Architecture | Marine |
|---|---|---|---|---|---|---|---|---|
| Drive Shaft, Yoke shaft, Bearings, Bushings, Piston Heads | Gears, Sealing Rings, Bearing Bushing, Cams, Spindles | Pump Parts, Hardware |