Phosphor Bronze 544 / C544 / C54400
ASTM B139, QQ_B-750 Comp. B
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!
Standard Sizes
- C54400 – ½” Dia. thru 6”
C54400 Phosphor Bronze Applications
- Chemical hardware
- Bushings
- Gears
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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
| Element | Cu (1) | Pb | Sn | Zn | Fe | P | ||||||
| Min % | 3 | 3.5 | 1.5 | 0.01 | ||||||||
| Max % | Rem | 4 | 4.5 | 4.5 | 0.1 | 0.5 |
Physical Properties
| Melting Point – Liquidus ⁰F | 1830 | |
| Melting Point – Solidus ⁰F | 1700 | |
| Density lb/cu in. at 68⁰F | 0.32 | |
| Specific Gravity | 8.89 | |
| Electrical Conductivity % IACS at 68⁰F | 19 | |
| Thermal Conductivity Btu/sq ft/ft hr/ ⁰F at 68⁰F | 50 | |
| Coefficient of Thermal Expansion 10-6 per ⁰F (68-572 ⁰F) | 9.6 | |
| Specific Heat Capacity Btu/lb/⁰F @ 68 ⁰F | 0.09 | |
| Modulus of Elasticity in Tension ksi | 15000 | |
| Modulus of Rigidity ksi | 5600 |
Fabrication Properties
| TECHNIQUE | SUITABILTY | |
| Soldering | Excellent | |
| Brazing | Good | |
| Oxyacetylene Welding | Not Recommended | |
| Gas Shielded Arc Welding | Not Recommended | |
| Coated Metal Arc Welding | Not Recommended | |
| Spot Weld | Not Recommended | |
| Seam Weld | Not Recommended | |
| Butt Weld | Fair | |
| Capacity for Being Cold Formed | Good | |
| Machinability Rating | 80 | |
Mechanical Properties
| FORM | TEMPER | TENSILE STRENGTH | YS-0.5% EXT (KSI) | ELONGATION (%) | ROCKWELL (B) | TORSION MODULUS (KSI) | SECTION SIZE (IN) |
| ROUND BAR / ROD |
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.