C67300 Manganese Bronze

SAE J461, SAE J463

This is a high strength leaded silicon manganese bronze with typically good bearing qualities. This alloy maintains high impact resistance with excellent machinability making it well suited for clutch bearings, shaft bushings, sleeve bearings, thrust bearings, pump parts, drive shafts, bearing pins, wear plates, gears and cams. Resists squashing out under high loads and extreme wear applications.

Typical Uses for C67300 Manganese Bronze:

Typical Applications

FASTENERS: Fasteners, Lead Screw Nuts

INDUSTRIAL: Gears and Cams, Wear Plates, Bushings, Seal Rings, Idler Pins, Piston Heads, Brearing Pins, Thrust Bearings, Sleeve Bearings, Propeller Shafts, Shaft Bushings, Clutch Bearings, Drive Shafts, Spindles, Pump Parts, Bearings

MARINE: Hardware, Valve Seats

OTHER: Connecting Rods

Category:

C67300 Typical uses

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.

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

CDAASTMSAEAMSFederalMilitaryOther
C67300J461
J463

Chemical composition

Cu%Pb%Sn%Zn%Fe%Ni%1Al%Mn%Si%
Chemical composition according to SAE J463
1Ni value includes Co.
Note: Single values represent maximums.
58.00-
63.00
0.40-
3.00
0.30Rem.0.500.250.252.00-
3.50
0.50-
1.50

Machinability

Copper alloy UNS No.Machinability ratingDensity (lb/in3 at 68 °F)
C67300700.300

Mechanical properties

Mechanical properties according to SAE J463

C67300

H02 half hard

Size range: up to 1″ inclusive

Tensile strength, minYield strength, at 0.5% extension under load,, minElongation, in 4x Diameter or Specimen Thickness, minRockwell “B” hardnessRemarks
ksiMPaksiMPa%min HRB
65448402761270

Size range: over 1″ to 3″ inclusive

Tensile strength, minYield strength, at 0.5% extension under load,, minElongation, in 4x Diameter or Specimen Thickness, minRockwell “B” hardnessRemarks
ksiMPaksiMPa%min HRB
58400352411570

Size range: over 3″

Tensile strength, minYield strength, at 0.5% extension under load,, minElongation, in 4x Diameter or Specimen Thickness, minRockwell “B” hardnessRemarks
ksiMPaksiMPa%min HRB
55380302051865

Physical properties

Physical properties provided by CDA
US CustomaryMetric
Melting point – liquidus1605 °F874 °C
Density0.3 lb/in3 at 68 °F8.3 gm/cm3 at 20 °C
Specific gravity8.38.3
Electrical conductivity22% IACS at 68 °F0.13 MegaSiemens/cm at 20 °C
Thermal conductivity55 Btu/sq ft/ft hr/°F at 68 °F95 W/m at 20 °C
Coefficient of thermal expansion 68-57211 · 10-6 per °F (68-572 °F)19 · 10-6 per °C (20-300 °C)
Modulus of elasticity in tension17000 ksi117212 MPa

Fabrication properties

Fabrication properties provided by CDA
TechniqueSuitability
Machinability rating70

Common fabrication processes

Hot forging and pressing, machining

Common fabrication processes provided by CDA