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Phosphor Bronze 544 / C544 / C54400

ASTM B139, QQ_B-750 Comp. B

Level 4
Excellent Bearing Surface
Level 3
Resists Wear
Level 2
Limited to Applications with High Strength & Low Conductivities

Farmer’s Copper Ltd. a C54400 Phosphor Bronze Supplier, maintains an extensive inventory of Phosphor Bronze Round Rods. C54400 provides an excellent bearing surface that limits friction and resists wear. Its use as an electrical conductor is limited to applications where high strength is required and relatively low conductivities can be tolerated. Copper Alloy 544 is a primary applicant where strength and bearing properties are required, and, in addition, offers the corrosion-resistant characteristic of the high tin phosphor bronzes.

Farmer’s Copper Ltd. a C54400 Phosphor Bronze Supplier, can offer material cut to your specifications on our bar saws. Please contact one of our knowledgeable sales staff today to help you with your phosphor bronze needs!

C54400 Phosphor Bronze

C54400 Phosphor Bronze Shapes

Standard Sizes

  • C54400 – ½” Dia. thru 6”

C54400 Phosphor Bronze Applications

  • Chemical hardware
  • Bushings
  • Gears


Farmer’s Copper Ltd. extends its services throughout many industries. We provide the raw copper alloy materials in various standard shapes as well as custom cut copper alloys.

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Our C54400 Phosphor Bronze Inventory & Properties

Farmer’s diverse inventory of products and services offered provides our customers the largest and most extensive selection of alloys available, cut to precise specifications, and delivered with total quality control.

Chemical Properties

ElementCu (1)PbSnZnFeP
Min %
Max %Rem44.

Physical Properties

Melting Point – Liquidus ⁰F1830
Melting Point – Solidus ⁰F1700
Density lb/cu in. at 68⁰F0.32
Specific Gravity8.89
Electrical Conductivity % IACS at 68⁰F19
Thermal Conductivity Btu/sq ft/ft hr/ ⁰F at 68⁰F50
Coefficient of Thermal Expansion 10-6 per ⁰F (68-572 ⁰F)9.6
Specific Heat Capacity Btu/lb/⁰F @ 68 ⁰F0.09
Modulus of Elasticity in Tension ksi15000
Modulus of Rigidity ksi5600

Fabrication Properties

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 FormedGood
Machinability Rating80

Mechanical Properties

H04 68 57 20 80 5.7 1
H04 75 63 15 83   0.5

Our Commitment to Service

As a leading copper, brass, & bronze alloys supplier, Farmers Copper Ltd. attributes our success to serving our customers, through our service-minded employees and material readily available for prompt, accurate deliveries of copper, brass, bronze, stainless steel and other metal alloys.

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