Certified metal billet and bar stock for CNC machining

Materials guide

CNC materials guide.

Metals and engineering plastics we machine every day, with a quick read on cost, machinability and turnaround. All materials are traceable; certificates on request.

Material cost$$$$$low → high
Machining cost$$$$$easy → difficult
Turnaround★★★★★slower → faster

Metals

Aluminium, steel, titanium, brass & copper

Aluminium 6-series

6061 / 6082

The everyday workhorse, easy to machine, strong for its weight, and takes anodizing well.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Aluminium 7-series

7075 / 7050

High-strength aerospace aluminium for structural, load-bearing parts.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Aluminium 5-series

5083 / 5052

Excellent corrosion resistance and weldability; favoured for marine and sheet work.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Stainless steel

304 / 316 / 17-4PH

Corrosion-resistant and strong; 316 for chemical and medical, 17-4PH for high strength.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Mild steel

Q235 / Q355 / C45

Low-cost, strong structural steel; finished or coated for corrosion resistance.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Alloy steel

4140 / 42CrMo4

High strength and wear resistance; heat-treatable for demanding mechanical parts.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Titanium

Ti-6Al-4V / TA2

Exceptional strength-to-weight and biocompatibility; a premium aerospace and medical alloy.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Brass

C36000 / C38500 / C27000

Free-machining and attractive; ideal for fittings, valves and electrical parts.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Copper

C11000 / C14500

Outstanding electrical and thermal conductivity for connectors and heat sinks.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Engineering plastics

POM, nylon, PEEK & PTFE

POM / Acetal

POM-C / POM-H

Stiff, low-friction and dimensionally stable; great for gears and precision parts.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

Nylon / PA6

PA6 / PA66

Tough, wear-resistant and lightweight; common for bushings and wear parts.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

PEEK

PEEK

High-temperature, chemically resistant high-performance polymer.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

PTFE

PTFE

Ultra-low friction and chemically inert; soft and needs care to machine.

Material cost$$$$$
Machining cost$$$$$
Turnaround★★★★★

All materials are traceable and supplied with certificates on request. Ratings are general guidance, actual cost and lead time depend on geometry, tolerance and quantity.

Machined parts in aluminium, steel, brass and engineering plastics

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Not sure which material fits?

Send your drawings and our engineers will advise on material and tolerance to balance cost, strength and lead time, quote within 48 hours.

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