Common Copper Grades Chart

Copper is one of the best and most commonly used materials for precision machined parts.

Like most materials, there are different copper alloys, each with slightly different compositions and use cases. Not every copper alloy is suitable for precision machined parts. For example, pure copper is flexible and used for wiring, but not strong enough to use for machined parts.

The majority of precision copper parts are made from a few different alloys.

Spex typically uses 5 different copper alloys to machine precision parts for a wide variety of industries. The most common type of copper alloy is called beryllium copper. Adding beryllium increases the strength and durability, while maintaining the benefits of copper. The versatility, corrosion resistance, and conductivity of copper make it an excellent choice for CNC machined parts.

This chart gives you a brief overview of the most common copper alloys, their costs, and common uses for each.

Common grades of copper

AISI Grade	Material Cost	Machining Cost	Common Uses
C110	Low	Medium-Low	Plumbing Hardware, Electrical Components, Switch Gears, Fittings
C145	Medium-Low	Low	Fittings, Bolts, Electrical Components, Sprinkler Heads
C172	High	Medium-Low	Bushings, Bearings, Pump Components, Bolts, Washers
C173	High	Low	Navigational Instruments, Washers, Screws, Bolts, Pins, Valves
C175	High	Low	Fasteners, Bearings, Springs, Screws, Rivets

Spex is an ISO 9001:2015 certified company. Organizations use this standard to demonstrate the ability to consistently provide products and services that meet customer and regulatory requirements.

We incorporate world-class excellence in every step of the process, in our ongoing efforts to ensure your success.

Reach out to our team to get a quote for CNC machined copper parts for your next project.