C67400 Description

  • Annealing
  • UNS C67400 copper alloy is annealed between 427 and 593°C (800 and 1100°F).
  • Cold Working
  • UNS C67400 copper alloy has poor cold working capacity.
  • Welding
  • Welding processes suitable for UNS C67400 copper alloy include brazing, gas shielded arc welding, butt welding, spot welding, soldering and seam welding. Coated metal arc welding and oxyacetylene welding are not recommended for this alloy.
  • Forging
  • UNS C67400 copper alloy is forged between 593 and 677°C (1100 and 1250°F). The hot forgeability rating of this alloy is 100.
  • Machinability
  • The machinability rating of UNS C67400 copper alloy is 25.
  • Hot Forming
  • UNS C67400 copper alloy has excellent hot forming capacity.
  • Applications
  • UNS C67400 copper alloy can be used for pump components, heavy-duty mechanical components, valve stems and bearings.

Category:

C67400 Product description: Manganese bronze

UNS C67400 copper alloy is a hot forgeable alloy with good corrosion resistance and high strength. Applications include heavy duty mechanical components including bearings, valve stems and pump components.

The datasheet below provides an overview of UNS C67400 copper alloy.

Typical uses

Industrial: bushings, cams, chain guides, food conveyor chain, gears, shafts, wear plates
Other: connecting rods

Similar or equivalent specification

CDAASTMSAEAMSFederalMilitaryOther
C67400J461
J463

Chemical composition

Cu%Pb%Sn%Zn%Fe%Ni%1Al%Mn%Si%
Chemical composition according to SAE J463
1Ni value includes Co.
Single values represent maximums.
57.00-
60.00
0.500.30Rem.0.350.250.50-
2.00
2.00-
3.50
0.50-
1.50

Machinability

Copper alloy UNS No.Machinability ratingDensity (lb/in3 at 68 °F)
C67400300.292

Mechanical properties

Mechanical properties according to SAE J463

C67400

Extruded and drawn

Size range: up to 1″ inclusive

Tensile strength, minYield strength, at 00.5% extension under load,, minElongation, 4x Diameter or Thickness of Specimen, minRockwell “B” hardnessRemarks
ksiMPaksiMPa%min HRB
7854040275884

Size range: over 1″ to 2 ” inclusive

Tensile strength, minYield strength, at 00.5% extension under load,, minElongation, 4x Diameter or Thickness of Specimen, minRockwell “B” hardnessRemarks
ksiMPaksiMPa%min HRB
75515402751080

Size range: over 2″ to 3″ inclusive

Tensile strength, minYield strength, at 00.5% extension under load,, minElongation, 4x Diameter or Thickness of Specimen, minRockwell “B” hardnessRemarks
ksiMPaksiMPa%min HRB
70485362501278

Physical properties

Physical properties provided by CDA
US CustomaryMetric
Melting point – liquidus1625 °F885 °C
Melting point – solidus1590 °F866 °C
Density0.292 lb/in3 at 68 °F8.08 gm/cm3 at 20 °C
Specific gravity8.088.08
Electrical conductivity23% IACS at 68 °F0.13 MegaSiemens/cm at 20 °C
Thermal conductivity58 Btu/sq ft/ft hr/°F at 68 °F100.5 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)
Specific heat capacity0.09 Btu/lb/°F at 68 °F377.1 J/kg at 20 °C
Modulus of elasticity in tension16000 ksi110317 MPa
Modulus of rigidity6000 ksi41369 MPa

Fabrication properties

Fabrication properties provided by CDA
TechniqueSuitability
SolderingFair
BrazingGood
Oxyacetylene weldingNot recommended
Gas shielded arc weldingFair
Coated metal arc weldingNot recommended
Spot weldGood
Seam weldGood
Butt weldGood
Capacity for being cold workedPoor
Capacity for being hot formedExcellent
Forgeability Rating100
Machinability rating30

Thermal properties

Thermal properties provided by CDA
*Temperature is measured in Fahrenheit.
TreatmentMinimum*Maximum*
Annealing8001100
Hot treatment11001250

Common fabrication processesHot forging and pressing, machining

Common fabrication processes provided by CDA