7075 Aluminum Shafts

High-strength aluminum approaching mild-steel strength at a third the weight.

At a glance

Stocked condition	T6 temper
Machinability	Very good — cuts crisply
Weldability	Not recommended
Corrosion resistance	Fair — anodize or coat for exposure
Hardening	Supplied at full T6 temper
Density (nominal)	0.102 lb/in³
Food contact	No
Magnetic	No

7075-T6 is the strength king of common aluminum: zinc-based alloying brings it near mild-steel numbers while keeping aluminum's density. When an aluminum shaft must carry genuine load — aerospace actuation, racing components, highly stressed robotics — this is the grade.

It trades away some of 6061's virtues: corrosion resistance is noticeably poorer (anodize or coat it), and welding is not practical. Cost per pound is also the highest of our aluminum grades, so let the load case justify it.

Configure a 7075-T6 part →

Any geometry in the configurator — diameters, threads, keyseats, grooves, holes, tapers — can be machined in 7075-T6. Pick the material in the sidebar and the price updates live.

When to choose 7075-T6

An aluminum part must approach steel strength.
Aerospace, defense, or motorsport weight budgets.
High-cycle loads where 6061 would fatigue.

Consider instead

6061 — cheaper and more corrosion-resistant when its strength suffices.
2024 — when fatigue behavior is the driving spec.
1144 — when steel weight is acceptable after all.

Typical applications

Aerospace and UAV shafts
Racing and motorsport components
High-load robotics joints
Firearms and archery components

Frequently Asked Questions

It approaches mild-steel strength — a genuine structural achievement at a third the weight — but hardened alloy steels like 4140 remain far stronger. "Steel strength" claims apply against low-carbon grades, not heat-treated ones.

More readily than 6061 — its zinc-rich chemistry is less self-protecting. Outdoors or in humid service it should be anodized or coated; indoors it needs no special care.

Not practically — it is considered unweldable by conventional processes and loses its temper at the joint. Design with mechanical fastening, or switch to 6061 if welding is required.

Stocked as 7075-T6. Material and condition are paired — each grade ships in one condition optimized for our process; see all grades on the materials page.