Precision Components - Non-Free Machining Alloys

Non-free machining materials are often hard to cut, but are non-corrosive making them ideal for medical components and aerospace precision machining. Below is a list of the non-free machining alloys we most often work with. Contact Micro Precision Components for more information or to request a quote.

Sample Precision Components using Non-Free Machining Alloys

Examples of Non-Free Machining Alloys for Precision Components


Machines well despite long chips. Tool wear is drastically higher than all other plastics. Often used for medical components.

Stainless Steel

This alloy is often chosen for precision parts that need corrosion resistance. Requires a strong machine as material can be “gummy” in the machine.

Stainless Steel

304L is known for its toughness and ductile properties. Burrs are a challenge because this material is soft so it’s easier to push this material, rather than cut it. Often better suited to parts that utilize cold forming processes.

Stainless Steel 440C/B

When heat treated, 440C has the highest hardness values of any stainless steel (Rc 60). Material is a challenge to machine due to its high carbon content. Primarily used for bearings or other precision part applications needing wear resistance, however, this material does not offer significant corrosion resistance.

Stainless Steel 316LVM

This implant quality alloy is difficult to machine due to its soft nature. It produces razor sharp chips, which affect tool quality.

Titanium -
Grade 5

This material is very expensive, but can machine better than some implant quality stainless steels.

Titanium -
Grade 2

More difficult to machine than Grade 5 and requires fire safety measures on the machine.