Producer of custom machined parts, specializing in bronze and other popular alloys for your manufacturing needs.
COPPER-BASED ALLOYS
C67300
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
MACHINABILITY
Copper Alloy UNS No.
Machinability Rating
Density(lb / in 3 at 68 °F)
C67300
70
0.300
MECHANICAL PROPERTIES
Mechanical Properties according to SAE J463

H02 Half Hard
SIZE RANGE: UP TO 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


SPEC SHEET


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