Phosphor Bronze Machining | Penta Precision       +44 (0) 23 9266 8334

Phosphor Bronze Machining

A Guide to Phosphor Bronze CNC Machined Parts: Properties, Applications and Design Considerations

What is Phosphor Bronze?

Phosphor Bronze (also known as tin bronze or phos bronze) is an alloy of copper, tin and phosphorous. One of the oldest metal alloys, it is a versatile material that offers very good corrosion resistance. It is particularly used within the marine industry but also electrical, aerospace and chemical.

A number of grades of phosphor bronze are available. PB102 is the most common grade of wrought phosphor bronze used in the UK.

It has high corrosion resistance and excellent spring qualities – making it suitable for a wide range of applications and especially heavy duty components.

Main Attributes of Phosphor Bronze:

  • High corrosion resistance
  • High fatigue strength
  • Low coefficient of friction
  • Fine grain
  • Good spring properties
  • High mechanical properties
  • Difficult to machine
  • Good resistance to cold
  • Good thermal and electrical conductivity


Need a part machined by an experienced and reliable components manufacturer? Simply complete our short form to receive your no obligation quotation.

Detailed information about Phosphor Bronze for designers can be found in the tabs below. Please note: this information is provided as a guide only.

Phosphor Bronze Machining Service - Phosphor Bronze Milling & Turning

    Penta Precision supplies highly accurate Phosphor Bronze machined parts throughout the UK. Customers turn to us when they have had quality and delivery issues with their existing suppliers and need a reliable precision machining partner.

    Penta Precision provides the following Phosphor Bronze machining services: 

    • CNC milling – prototypes & large batch runs
    • CNC turning – prototypes & large batch runs
    • Insert installation
    • Part marking
    • Manual milling
    • Manual turning
    • Machining design advice
    • Machining drawing service

    Reasons to Choose Penta:

    • ISO 9001:2015 quality assurance
    • Consistent high quality machined parts
    • Reliable delivery dates - our track record speaks volumes
    • Exceptional customer service and communication
    • Machining design advice
    • Extensive experience in our field
    What Makes Penta Different?

    There are 3 key elements that run through the core of our company and staff at every level to ensure we deliver an exemplary service that goes above and beyond. We like to call these our 3 C's:

    • We Communicate well 
    • We take Care at each stage
    • Our service is Consistent

    See our ‘Proven Process’ page to find out more

    We are regularly machining Phosphor Bronze for customers all over the UK. Our customers depend on our machining expertise as well as our outstanding delivery performance, to machine the highest quality parts. If you'd like to discuss how we can help you with your Phosphor Bronze machining requirements, here's a list of ways to get in touch with us.

    Want to know more about Penta?

    Can we meet your
    Phosphor Bronze machining needs?
    Call our engineering team on
    +44 (0) 23 9266 8334
    or contact us via our email form

    "I have always found Penta to be very professional when dealing with them. I find good communication to be very important, something Penta excel at." Ben - Buyer

    Tel: +44 (0) 2392 668 334

    Fax: +44 (0) 2392 668 335

    Connect with us:

    Penta Precision Engineering Ltd

    Aspen House

    Airport Service Road



    PO3 5RA

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