Manufacturer of Custom Machined Parts

Cast C54400

Phosphor bronze alloys such as C54400, also known as C544, consist of copper with 0.50–11.00% tin and 0.01–0.35% phosphorus. The tin increases the corrosion resistance and strength of the alloy. The phosphorus increases the wear resistance and stiffness of the alloy. These alloys are notable for their toughness, strength, low coefficient of friction, and fine grain.

Information

PRODUCT DESCRIPTION: Phosphor Bronze B-2
TEMPERS: H04 Hard
SOLIDS: 3/8” to 2 3/4” O.D.
HEX: 3/8" to 2" O.D.
RECTANGLES: Consult Mill
STANDARD LENGTHS: 144”

Typical Uses

ELECTRICAL: electrical connectors
INDUSTRIAL: bearings, bushings, gears, pinions, screw machine products, shafts, sleeve bearings, thrust bearings, thrust washers, valve parts

Similar or Equivalent Specification

CDAASTMSAEAMSFederalMilitaryOther
C54400B139 B139MJ461 J463

Chemical Composition

Cu%Pb%Sn%Zn%Fe%P%
Rem.3.00-4.003.50-4.501.50-4.600.100.01-0.50

Chemical Composition according to ASTM B139/B139M-12(2017)

Note: Cu + Sum of Named Elements, 99.5% min. Single values represent maximums.

Machinability

Copper Alloy UNS No.Machinability RatingDensity (lb / in³ at 68 °F)
C54400800.320

Mechanical Properties

Mechanical Properties according to ASTM B139/B139M-12(2017)

H04
Size Range: Over 1/16" to 1/4" Round and Hexagonal Inclusive

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, 4x Diameter or Specimen Thickness, min Rockwell "B" HardnessRemarks
ksiMPaksiMPa%typical HRB
65450886

Size Range: 1/4" to 1/2" Round and Hexagonal Inclusive

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, 4x Diameter or Specimen Thickness, min Rockwell "B" HardnessRemarks
ksiMPaksiMPa%typical HRB
604151086

Size Range: Over 1/2" to 1" Round and Hexagonal Inclusive

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, 4x Diameter or Specimen Thickness, min Rockwell "B" HardnessRemarks
ksiMPaksiMPa%typical HRB
553801286

Size Range: Over 1" Round and Hexagonal

Tensile Strength, minYield Strength, at 0.5% Extension Under Load, minElongation, 4x Diameter or Specimen Thickness, min Rockwell "B" HardnessRemarks
ksiMPaksiMPa%typical HRB
503451586

Physical Properties

 US CustomaryMetric
Melting Point - Liquidus1830 °F 999 °C
Melting Point - Solidus1700 °F 927 °C
Density0.320 lb/in³ at 68 °F 8.89 gm/cm³ at 20 °C
Specific Gravity8.898.89
Electrical Conductivity19% IACS at 68 °F 0.111 MegaSiemens/cm at 20 °C
Thermal Conductivity50 Btu/sq ft/ft hr/°F at 68 °F 86.5 W/m at 20 °C
Coefficient of Thermal Expansion 68-5729.6 · 10-6 per °F (68-572 °F)16.6 · 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 Elastic in Tension15000 ksi103420 MPa
Modulus of Rigidity5600 ksi38610 MPa

Fabrication Properties

TechniqueSuitability
SolderingExcellent
BrazingGood
Oxyacetylene WeldingNot Recommended
Gas Shielded Arc WeldingNot Recommended
Coated Metal Arc WeldingNot Recommended
Spot WeldNot Recommended
Seam WeldNot Recommended
Butt WeldFair
Capacity for Being Cold WorkedGood
Machinability Rating80

Thermal Properties

TreatmentMinimum *Maximum *
Annealing9001250

* Temperature is measured in Fahrenheit

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