Copper Alloys, BrassCW712R (CZ112) Bar

Brass alloy with the addition of tin, used in a wide range of marine and subsea applications.

CZ112/CW712R is commonly referred to as naval brass due its corrosion resistance in seawater and other mildly aggressive environments. The alloy contains 60% copper and 39% zinc, with a 1% tin addition for improved corrosion resistance and a harder and stronger duplex structure to improve the mechanical properties.

The increase in corrosion resistance enables the material to be used in both seawater and other mildly aggressive media, it also offers better strength levels than many of the basic alpha brasses combined with an excellent hot formability.

Talk to an expertDownload PDF


Product FormSize Range
Round Bar EN12163316"- 4"
If you do not see what you are looking for, please contact your local service centre with your specific requirements.

Related Specifications

CZ112/CW712R corresponds to the following designation but may not be a direct equivalent:

  • CuZn36Sn1Pb


Chemical Composition


  • Heat exchanger tubeplates
  • Marine components
  • Fasteners in corrosion resistant applications
  • High strength cold headed products
  • Hardware for subsea applications
  • General machined components


  • Very good corrosion resistance in marine environments
  • Excellent hot formability
  • Good strength
  • Retention of properties at cryogenic temperatures

Additional Information

Corrosion Resistance

Find your local Service Centre

An extensive UK network of Service Centres, backed up by a central distribution facility.

  • Experienced multi-product specialists

  • In-house state of the art processing facilities

  • Large fleet of bespoke delivery vehicles

RBL Truck Retouched
RBL Truck Retouched