Copper and Copper Alloys - Brass - CW624N Bar and Profiles

CW624N Bar and Profiles

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. CZ130/CW624N is a duplex or alpha/beta alloy.
Brass alloy CZ130/CW624N is a machinable brass with an attractive yellow lustre that is typically used in sections such as angle.

CZ130 is typically used in decorative applications such as:
Machine parts
Electrical appliances

Chemical Composition

Spec: EN 12167:2011

CW624N Brass

Chemical Element % Present
Copper (Cu) 55.00 - 57.00
Lead (Pb) 1.60 - 3.00
Aluminium (Al) 0.05 - 5.00
Zinc (Zn) Balance


Physical PropertyValue
Density 8.44 g/cm³
Melting Point 890 °C
Thermal Conductivity 109 W/m.K



Mechanical PropertyValue
Proof Stress 150-220 MPa
Tensile Strength 350-420 MPa
Elongation A50 mm 20-30 %
Hardness Vickers 90 to 120 HV

Alloy Designations

CZ130/CW624N corresponds to the following designations:

ISO CuZn43Pb2Al / CuZn43Pb2


Supplied Forms

CZ130/CW624N is typically supplied as Angle

  • Bar
  • Angle

Corrosion Resistance

CZ130/CW624N has good corrosion resistance in most environments.

Cold Working

CZ130/CW624N has a poor to fair rating for cold working.

Hot Working

Hot working of CZ130/CW624N is excellent. It is normally formed into complex profiles using hot extrusion.

The hot forgeability rating of CZ130 is good to excellent.


CZ130/CW624N has a very good machinability rating of 90 compared to CZ121/CW614N Brass which is rated as 100.


Soldering of CZ130/CW624N is rated as excellent.

Oxyacetylene welding and gas shielded arc welding are not recommended.

Resistance welding is rated as fair.

Friction welding is rated as good.

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.