Copper and Copper Alloys - Brass - CW606N Brass Bar

CW606N Brass Bar

Brasses are alloys of Copper and Zinc. They may also contain small amounts of other alloying elements to impart advantageous properties. Brasses have high corrosion resistance and high tensile strength. They are also suited to fabrication by hot forging. Free machining grades of brass set the standard for machining, by which other metals are compared.
Brasses are divided into two classes. The alpha alloys, with less than 37% zinc, and the alpha/beta alloys with 37-45% zinc. Alpha alloys are ductile and can be cold worked. Alpha/beta or duplex alloys have limited cold ductility and are harder and stronger. CZ131 / CW606N is an alpha/beta alloy.
The composition of brass alloy CZ131 / CW606N has been designed to provide a compromise between machinability, ductility and strength. Thus, it can be used in applications when machinability and riveting are required.

CZ131 / CW606N is typically used in:
Domestic appliances
Automotive engineering
Hose fittings
Intricate parts such as clock components

Chemical Composition

Spec: EN 12164:2011

CW606N Brass

Chemical Element % Present
Copper (Cu) 61.00 - 63.00
Lead (Pb) 1.70 - 2.80
Aluminium (Al) 0.0 - 0.05
Iron (Fe) 0.0 - 0.10
Nickel (Ni) 0.0 - 0.30
Others (Total) 0.0 - 0.20
Tin (Sn) 0.0 - 0.10
Manganese (Mn) 0.0 - 0.10
Zinc (Zn) Balance


Physical PropertyValue
Electrical Resistivity 0.066 x10^-6 Ω .m
Density 8.50 g/cm³
Melting Point 885 °C
Modulus of Elasticity 105 GPa
Thermal Conductivity 115 W/m.K

Spec: EN 12164:2011

Bar - 10mm to 80mm Dia. / 10mm to 60mm AF

Mechanical PropertyValue
Proof Stress 200-350 MPa
Tensile Strength 340-480 MPa
Hardness Brinell 70 to 140 Max HB
Elongation A 20 to 8 %

Alloy Designations

CZ131 / CW606N corresponds to the following designations but may not be a direct equivalent:

UNS C35300   

ISO CuZn37Pb2

Supplied Forms

CZ131/CW606N is typically supplied as Round bar

  • Bar

Corrosion Resistance

Corrosion resistance is rated from fair to excellent in most environments.

Cold Working

CZ131 / CW606N has only a fair rating for cold working.

Hot Working

Hot forming of CZ131 / CW606N is poor.

Heat Treatment

Solution treatment or annealing can be done by rapid cooling after heating to 430-600°C.


This alloy has a machinability rating of 70 when Brass CZ121/CW614N is 100.


Soldering of CZ131 / CW606N is rated as “excellent” and brazing is “good”. Butt welding is fair but all other welding methods are not recommended.

Datasheet Search

Last Datasheet Revision

18 July 2019


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 & 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.