There are many factors, sometimes overlooked, that contribute to low costs of brass components.
Close tolerance manufacturing techniques can be employed so that finishing costs are minimal.
Tooling costs may be significantly lower than for other materials or processes.
Ease of machining means that production costs can be minimised.
The good corrosion resistance of the brasses means that the cost of protective finishing is lower than for many other materials.
In addition to these benefits the high value of any process scrap can be used to reduce production costs significantly.
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The long service life normally expected of well-designed brass components means that the costs of service failures are minimal.