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:
Intricate parts such as clock components
CZ131 / CW606N corresponds to the following designations but may not be a direct equivalent:
CZ131/CW606N is typically supplied as Round bar
Corrosion resistance is rated from fair to excellent in most environments.
CZ131 / CW606N has only a fair rating for cold working.
Hot forming of CZ131 / CW606N is poor.
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.