Brass is an alloy 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 hot forging. Free machining brass sets the standard for machining, by which other metals are compared.
Brass is 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.
CZ122 | CW617N is an alpha/beta alloy. Brass alloy CZ122 | CW617N is used for machining. It has Lead added to the composition to improve machinability. The Lead remains insoluble in the microstructure of the brass and the soft particles act as chip breakers.
CZ122 | CW617N corresponds to the following Brass Alloy Grade but not be a direct equivalent to UNS C38500 or CuZn39Pb3. CZ122 | CW617N Brass Alloy is supplied as a round, flat, square, and hexagon bar, Hollow Bar.
CZ122 | CW617N Brass Alloy Grade is also known as Machine Grade.
CZ122 | CW617N is typically used in High speed machined components, Architectural extrusions, Locks, Hinges.
Traditional uses for CZ122 | CW617N include a wide variety of machined components made on high-speed lathes including screws, bolts, nuts, bushing, pins, washers, butts, hinges, and also locks and components for watches.
Excellent hot forming properties, Good corrosion resistance, High machinability rating
CZ122, CW617N, C37700, CuZn39Pb2.
CW617N / CZ122 is classed as stamping brass and is mainly supplied as rod for forging stock although it is also free machining. The material consists mainly of 59% copper 39% zinc with a 2% lead addition that is finely dispersed throughout the microstructure. : The CW617N / CZ122 exhibits an excellent combination of hot working and machining properties and is most commonly utilized for the production of more complex hot pressed components. If sheet material is also required to complete a contract, the equivalent grade for this material would be CW608N / CZ120. This grade is also available in a comprehensive range of thicknesses from Holme Dodsworth stocks.
The C617N / CZ122 is utilised for a wide range of hot forged and pressed components including sanitary appliances, door furniture, window fittings taps and valve parts, automotive components, decorative items, brackets, clamps, housing, gears, cams, nuts, clock and watch parts and other components requiring a high degree of precision machining.
| Chemical Element | % Present |
|---|---|
| Copper (Cu) | 56.00 - 58.50% |
| Lead (Pb) | 1.50 - 2.50% |
| Aluminum (Al) | 0.0 - 0.05% |
| Iron (Fe) | 0.0 - 0.30% |
| Nickel (Ni) | 0.0 - 0.30% |
| Tin (Sn) | 0.0 - 0.30% |
| Others (Total) | 0.0 - 0.20% |
| Zinc (Zn) | Balance(%) |