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Phosphor Bronze Fasteners
Phosphor Bronze fasteners are specified for applications that demand high strength, excellent corrosion resistance and long-term reliability. Manufactured from a copper-based alloy containing tin and a small amount of phosphorus, phosphor bronze fasteners perform consistently in marine, electrical and industrial environments. We supply a range of phosphor bronze fasteners, including bolts, screws, nuts and washers, available from stock or manufactured to order.
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What are phosphor bronze fasteners?
Phosphor bronze fasteners are manufactured from a copper–tin alloy with a small phosphorus addition, designed to deliver high strength, corrosion resistance and wear performance. Tin increases strength and corrosion resistance, while phosphorus improves fatigue resistance and stiffness, making these fasteners suitable for demanding environments.
What are the key properties of phosphor bronze fasteners?
Phosphor bronze fasteners offer:
- High tensile strength and durability
- Excellent corrosion resistance
- Low coefficient of friction
- Non-magnetic properties
- Fair electrical conductivity
These characteristics make phosphor bronze fasteners a reliable choice for marine, electrical and industrial applications.
Where are phosphor bronze fasteners used?
Phosphor bronze bolts, washers and fixings are commonly used in:
- Marine and coastal environments
- Electrical equipment and components
- Automotive assemblies
- Mechanical and precision engineering applications
In marine and corrosive environments, phosphor bronze fasteners are often specified alongside silicon bronze fasteners, with the final material choice depending on strength, corrosion resistance and wear requirements.
What grades of phosphor bronze fasteners are available?
Phosphor bronze fasteners are supplied in industry-recognised grades, including:
- C510, C519, C521 and C544 (UNS designations)
- PB1 and PB2 (British Standard alloys)
Each grade offers slightly different mechanical and corrosion-resistant properties to suit specific applications.
Why choose phosphor bronze fasteners from Fastenright?
We supply a comprehensive range of phosphor bronze fasteners, including:
- Phosphor bronze bolts
- Phosphor bronze washers
- Screws, nuts and specialist fixings
Standard items are available from stock, with non-standard sizes, grades and finishes available to order. We also manufacture bespoke phosphor bronze components to drawings and specifications, subject to minimum order quantities.
