Isis Metals, a prominent manufacturer and supplier located in Manila, Philippines, specializes in high-quality Phosphorous Bronze Bars and Rods tailored to meet a variety of industrial demands. Known for their exceptional strength, impressive wear resistance, and remarkable corrosion protection, these products are perfect for challenging mechanical and marine settings. Isis Metals is dedicated to precision manufacturing, ensuring reliable performance and consistent material integrity in every item they produce. With a strong focus on quality and customer satisfaction, Isis Metals delivers Phosphorous Bronze Bars and Rods that adhere to international standards, providing outstanding value for a range of engineering and industrial applications.
Phosphorous Bronze Bars and Rods are primarily made up of copper, tin, and a small amount of phosphorus. Typically, the alloy consists of 88–95% copper, 5–10% tin, and up to 0.5% phosphorus. This specific blend boosts strength, fatigue resistance, and corrosion protection. The material showcases high tensile strength ranging from 350–600 MPa, along with excellent elasticity and superior hardness. Its low friction coefficient and great machinability make it ideal for precision components. Moreover, it performs exceptionally well under fatigue, impact, and wear conditions, even in harsh marine or corrosive environments.
| Specifications | AMS 4625, ASTM B139, ASME SB139 |
| Phosphor Bronze Round bar size | Diameter: 3mm~800mm |
| Phosphor Bronze Angle bar size | 3mm*20mm*20mm~12mm*100mm*100mm |
| Phosphor Bronze Square bar size | 4mm*4mm~100mm*100mm |
| Phosphor Bronze Flat bar size | Thickness: 2mm~100mm |
| Width: 10mm~500mm | |
| Phosphor Bronze Hex Bar size | 2mm~100mm |
| Phosphor Bronze Billet Size | 1/2″ to 495mm Diameter |
| Phosphor Bronze Rectangles Size | 33mm x 30mm to 295mm x 1066mm |
| Finish | Bright, Polish, Bright, Rough Turned, Grinding, Centreless Ground & Black |
| Length | 1000mm-6000mm |
| Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements |
| Surface | Hot Rolled Pickled or Sand Blasting Finished, Cold Drawn, Bright, Polished, Hairline |
| Condition | Cold Drawnd Pulished Cold Drawn Centreless Ground & Polished, Annealed round bar |
| Technique | Phosphor Bronze Hot Rolled, Cold Rolled, Cold Drawn, Forged Round Bar, Rod |
| Form | Round, Rod, Precision Ground Bar, Square, Round Rod, Hollow, Hex (A/F), Triangle, Rectangle, Threaded, T-Bar, Half Round Bar, Flat Bar, Rings, Blocks, Billet, Ingot, I/H Bar, Angle, Channel Bar, Profiles, Forging Etc. |
| Alloy number | Sn | P | Pb | Zn | Cu+Sn+P |
| C5191 | 5.5-7.0 | 0.03-0.35 | ≥99.5 | ||
| C5441 | 3.0-4.5 | 0.01-0.50 | 3.5-4.5 | 1.5-4.5 | ≥99.5 |
| Grade B.S. 1400: 1985 | Nominal Composition | 2% PS N/mm Min | Tensile Strength N/mm Min | Elongation % Min | Brinell Hardness Min |
| PB1 | 89/10/01 | 130 | 250 | 5 | 60 |
| PB1 | 88/12 | 140 | 260 | 7 | 80 |
| PB1 | 90/10 | 130 | 250 | 5 | 60 |
| PB1 | 90.5/9.5 | 130 | 240 | 5 | 80 |
| LPB-1 | 87/8/2/3 | 80 | 175 | 7 | 60 |
| Pb2 | 88/12 | 120 | 195 | 5 | 60 |
| Pb2 PB | 88/12 95/5 | 145 130 | 295 240 | 5 5 | 80 80 |
Phosphorus bronze bars can be welded, but it requires care. The material tends to be brittle at high temperatures, so preheating and using appropriate filler materials are recommended for successful welding.
To select the right phosphorous bronze bar, consider factors such as tensile strength, corrosion resistance, conductivity, the specific environmental conditions, required durability, and mechanical properties for your application.
To select the right phosphorous bronze bar, consider factors such as tensile strength, corrosion resistance, conductivity, the specific environmental conditions, required durability, and mechanical properties for your application.
Phosphorous bronze rods are available in diameters ranging from 1/8" to 12" and lengths up to 20 feet. Finishes include hot-rolled, cold-rolled, extruded, polished, and custom-machined.
Phosphorous Bronze Bars and Rods are extensively utilized in mechanical, electrical, and marine industries thanks to their durability and resistance to corrosion. They are commonly found in the production of bushings, bearings, pump parts, valve components, gears, and shafts. The alloy’s high fatigue strength and wear resistance make it perfect for heavy-duty mechanical systems. In electrical applications, it’s used for connectors, terminals, and springs due to its excellent conductivity and resilience. Additionally, it’s also employed in musical instruments, marine hardware, and precision engineering components that require both strength and reliability.














We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Isis Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Manila, Philippines
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