Brass Alloys - Brass CZ130 Properties, Fabrication and Applications

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.

Brass Classes

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 is a duplex or alpha/beta alloy.

Alloy CZ130

Brass alloy CZ130 is a machinable brass typically used in sections.

Chemical Composition of Brass alloy CZ130

Table 1. Chemical composition for brass alloy CZ130

Chemical

%

Cu

55.00 - 57.00

Pb

1.60 - 3.00

Al

0.05 -  5.00

Zn

Balance

CZ130 also covers brass with Aluminium removed from the above composition. This variation is CW623N. The addition of Aluminium imparts a golden lustre which eliminates the need for additional polishing.

Properties of Brass alloy CZ130

Mechanical Properties of Brass alloy CZ130

Table 2. Mechanical properties for brass alloy CZ130

Property

Value

Tensile Strength

350 - 420 MPa

Proof Stress

150 - 220 MPa

Elongation A50 mm

20 - 30 %

Hardness

90 - 120 HV

 

Physical Properties of Brass alloy CZ130

Table 3. Physical properties for brass alloy CZ130

Property

Value

Density

8.44 g/cm3

Melting Point

890 °C

Thermal Conductivity

109 W/m.K

Alloy Designations

Brass alloy CZ130 corresponds to the following designations:

CEN

BS

UNS

ISO

CW624N
CW623N

CZ130

C3800

CuZn43Pb2Al
CuZn43Pb2

Corrosion Resistance of Brass alloy CZ130

Brass alloy CZ130 has good corrosion resistance in most environments.

Fabrication of Brass alloy CZ130

Cold Working of Brass alloy CZ130

Brass alloy CZ130 has a poor to fair rating for cold working.

Hot Working of Brass alloy CZ130

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

The hot forgeability rating of Brass alloy CZ130 is good to excellent.

Machinability

Brass alloy CZ130 has a very good machinability rating of 90 compared to Alloy 360 FC Brass which is rated as 100.

Welding and Joining of Brass alloy CZ130

  • Soldering of Brass alloy CZ130 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”.

Supplied Forms

Brass alloy CZ130 is typically supplied by Aalco in the following form:

  • Angle

DISCLAIMER

This Data is indicative only and must not be seen as a substitute for the full specification from which it is drawn. In particular, the mechanical property requirements vary widely with temper, product and product dimensions. The information is based on our present knowledge and is given in good faith. However, no liability will be accepted by the Company is respect of any action taken by any third party in reliance thereon.

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.

Any 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. Any contract between the Company and a customer will be subject to the company’s 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.

This information has been sourced, reviewed and adapted from materials provided by Aalco - Ferrous and Non-Ferrous Metals Stockist.

For more information on this source, please visit Aalco - Ferrous and Non-Ferrous Metals Stockist.

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