C101 Machined Parts & Properties | ISO 9001:2015 | Penta Precision

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C101 Machining, Properties & Components

What is C101?

C101, also commonly known as CW004A is 99.9% pure copper. After silver, it is the next best conductor of electricity and therefore widely used in electronics applications. It is also used in a wide range of engineering applications due to high impact strength and ductility as well as corrosion resistance.

Main Attributes of C101:

  • Good to excellent corrosion resistance
  • Excellent electrical conductivity
  • Very good thermal conductivity
  • High ductility
  • High impact strength
  • Recyclable and sustainable
  • Poor weldability but otherwise easily joinable
  • Aesthetically pleasing
  • Distinctive smell and disagreeable taste
  • Yellowish/red metal
  • Subject to surface oxidation/patination
  • Non magnetic
  • Soft malleable metal


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Detailed information about C101 for designers including UK stock sizes and technical properties can be found in the tabs below. Please note: this information is provided as a guide only. All information is based on our present knowledge and is given in good faith. No liability will be accepted by Penta Precision in respect of any action taken by any third party in reliance thereon.

Similar or obsolete designation and trade names

You may also see C101 referred to as:

Copper C101 Components, Applications & Industries

Here are some examples of the industries and components for which C101 is appropriate. This is by no means an exhaustive list. Please do get in touch if you are considering using C101 and we can talk through your project with you.

Typical Components & Applications:
  • Instrument Windings
  • Heatsinks
  • Enclosures
  • Busbars
  • Switches
  • Electrical components
  • Terminals
  • Connectors
  • Transformers
  • Motor component
  • Building fascias
  • Domestic appliances
Industry Examples:
  • Electronics
  • Automotive
  • Appliances
  • General engineering
  • Marine

    C101 Machining Service

    Penta Precision provides highly accurate machined parts in C101. 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 C101 services: 

    Reasons to Choose Penta:

    We are regularly machining C101 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. Contact us to discuss how we can help you with your C101 machining requirements. 

    Can we meet your
    C101 machining needs?
    Call our engineering team on
    +44 (0) 23 9266 8334
    or contact us via our email form

    “Penta provide an excellent service to us. They offer a helpful, professional and friendly service. I would recommend anyone looking for sub-contracting machining use them '' Peter - Business Development Manager 

    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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