Brass CNC Machining

Contents

Brass is an alloy mainly composed of copper and zinc, brass types differ by ratios of copper, zinc, as well as slightly added elements, such as iron, tin, lead, aluminium, etc.

CNC machined brass parts are precise in tolerance, usually appear in vast complex shapes.

Is brass hard to CNC?

Not at all, brass is one of the easiest metal for cnc machining, here are reasons why brass suitable for cnc machining:

1. Brass is a relatively soft material, its hardness is just 85~105 HB, while stainless steel hardness is about 187 HB.

2. High plasticity, brass has the best plasticity when the zinc content is between 30% and 32%. for the micro-structure of brass can provide the best plasticity within this zinc content range. Brass is not easy to break when machined. That’s why brass can be customized into various complex parts.

Brass parts surface finishes

If your care more about brass parts functionality rather than its aesthetics, raw machined brass parts can fit your needs.

raw machined brass parts

However, brass parts can tend to darken, to prolong brass parts and enhance aesthetics, below are some common surface finishes applied to machined brass parts.

1. Electroplating. It refers to depositing a thin layer of other metal’s molecules onto brass by electrolysis. Commonly plated materials are silver, gold, chrome, or zinc. They can promote electrical-conductivity(silver and gold), durability, and aesthetics.

2. Powder coating. During this process, free-flowing dry powder is coated on brass parts, it helps to improve the durability, longevity, and corrosion resistance.

3. Polishing, polished brass parts appears glossy, and some even like mirror, very attracting.

CNC parts quality inspection method

CNC parts--the precision heart of industry

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