Brass
Brass is a copper-zinc alloy that machines exceptionally well, resists corrosion and has an attractive appearance. Free-cutting brass (such as CZ121 / CW614N) is the standard material for turned fittings, inserts, valves, connectors and small precision parts.
What it is
Leaded free-cutting brasses give short chips and excellent finish on high-speed lathes, making them the most economical material for many turned parts. Other grades include naval brass for marine use, high-tensile brass, and low-lead or DZR brass for drinking water.
Brass is electrically conductive, non-sparking and easy to plate with nickel or chrome.
Typical applications
- Plumbing and gas fittings
- Threaded inserts and bushes
- Electrical connectors and terminals
- Valve components
- Decorative hardware
Materials & grades
- CZ121 / CW614N (free cutting)
- CZ122 / CW617N (forging brass)
- Naval brass (CZ112)
- DZR brass (CW602N)
- Low-lead brass
Points to consider
- Leaded brass may be restricted for drinking water; use low-lead or DZR grades.
- Dezincification can occur in aggressive water; choose DZR brass.
- Excellent for high-volume turned parts.
- Hot-forging brass suits fittings with complex shapes.
Frequently asked questions
What is free-cutting brass?
Leaded brass such as CZ121 / CW614N designed for easy, fast machining with short chips and good finish.
Is brass safe for drinking water?
Low-lead and DZR brasses are used for potable water; standard leaded brass may be restricted.
Does brass rust?
No. Brass doesn't rust, though it can tarnish or dezincify in some water conditions.