CZ121 Machined Parts & Properties | ISO 9001:2015 | Penta Precision       +44 (0) 2392 668 334

CZ121 Machining, Properties & Components

What is CZ121?

CZ121 is an alpha/beta brass alloy that contains 3% lead for improved machinability (machinability rating of 90-100, the highest of any copper alloy). The lead remains insoluble in the microstructure of the brass and the soft particles act as chip breakers.

Main Attributes of Brass CZ121:

  • Excellent machinability
  • High tensile strength
  • Good corrosion resistance
  • Easily soldered or brazed
  • Good conductivity
  • Good spark resistance
  • Toughness at all temperatures
  • Low magnetic permeability

Detailed information about CZ121 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 CZ121 referred to as:

CZ121 Components, Applications & Industries

Here are some examples of the industries and components for which CZ121 is appropriate. This is by no means an exhaustive list. Please do get in touch if you are considering using CZ121 and we can talk through your project with you.

Typical Components & Applications:
  • Bushings
  • Bearings
  • Pins
  • Hinges
  • Trims
  • Fasteners
  • Architectural extrusions
  • Valves
  • Fittings
  • Tools
  • Pneumatics & hydraulics
  • Electrical accessories
  • Appliance parts
Industry Examples:
  • Electronics
  • Architecture
  • Plumbing

    Brass CZ121 Machined Part

    Brass CZ121 CNC Machined Replacement Part

    CZ121 Machining Service

    Penta Precision provides the following brass CZ121 services: 

    Reasons to Choose Penta:

    We are regularly machining CZ121 brass 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 CZ121 machining requirements. 

    Can we meet your
    CZ121 machining needs?
    Call our engineering team on
    +44 (0) 23 9266 8334
    or contact us via our email form

    ''Parts arrived today, and your delivery gives me plenty of time for subsequent assembly and testing etc. This has really helped me to get out of trouble, so thanks very much to you and all at Penta, and I will certainly use you again when the time comes.'' Tim – 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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