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.

Range

Product Form	Size Range
Round Bar EN12163	³⁄₁₆"- 4"

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Related Specifications

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

CuZn36Sn1Pb

Properties

Chemical Composition

Chemical Element	% Present
Copper (Cu)	61.00 - 63.00
Tin (Sn)	1.00 - 1.50
Lead (Pb)	0.20 - 0.60
Iron (Fe)	0.00 - 0.10
Nickel (Ni)	0.00 - 0.20
Others (Total)	0.00 - 0.20
Zinc (Zn)	Balance

Mechanical Property	Value
Proof Stress	160-200 MPa
Tensile Strength	340-400 MPa
Hardness Brinell	80 - 135 HB
Elongation A	25 - 20 %

Physical Property	Value
Density	8.40 g/cm³
Melting Point	900 °C
Electrical Resistivity	26 % IACS
Electrical Resistivity	0.066 x 10^-6 Ω .m

Applications

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

Characteristics

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

Additional Information

Corrosion Resistance

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Disclaimer

This Data is indicative only and as such is not to be relied upon in place of the full specification. In particular, mechanical property requirements vary widely with temper, product and product dimensions. All information is based on our present knowledge and is given in good faith. No liability will be accepted by the Company in respect of any action taken by any third party in reliance thereon. Please note that the 'Datasheet Update' date shown above is no guarantee of accuracy or whether the datasheet is up to date.

The information provided in this datasheet has been drawn from various recognised sources, including EN Standards, recognised industry references (printed S online) and manufacturers' data. No guarantee is given that the information is from the latest issue of those sources or about the accuracy of those sources. Material supplied by the Company may vary significantly from this data but will conform to all relevant and applicable standards. As the products detailed may be used for a wide variety of purposes and as the Company has no control over their use; the Company specifically excludes all conditions or warranties expressed or implied by statute or otherwise as to dimensions, properties and/or fitness for any particular purpose, whether expressed or implied. Advice given by the Company to any third party is given for that party's assistance only and without liability on the part of the Company. All transactions are subject to the Company's current Conditions of Sale. The extent of the Company's liabilities to any customer is clearly set out in those Conditions; a copy of which is available on request.