6061 Aluminum Shafts

The all-purpose aluminum — about a third the weight of steel, with good machinability and corrosion resistance.

At a glance

Stocked condition	T6 temper
Machinability	Very good
Weldability	Weldable (local loss of T6 strength at the weld)
Corrosion resistance	Good — protects itself; anodize for more
Hardening	Supplied at full T6 temper
Density (nominal)	0.098 lb/in³ — about a third of steel
Food contact	Generally acceptable (often anodized)
Magnetic	No

6061 in T6 temper is the default engineering aluminum: structural strength, natural corrosion resistance, clean machining, and it anodizes beautifully. At roughly a third the density of steel it is the first stop whenever shaft weight or inertia matters — robotics, spinning fixtures, and anything hand-carried.

Remember the modulus: aluminum flexes about three times more than steel under the same load, so long unsupported spans deflect more than the steel intuition expects. Size accordingly or keep spans short.

Configure a 6061-T6 part →

Any geometry in the configurator — diameters, threads, keyseats, grooves, holes, tapers — can be machined in 6061-T6. Pick the material in the sidebar and the price updates live.

When to choose 6061-T6

Weight or rotating inertia is a design driver.
Corrosion resistance without stainless machining costs.
The part will be anodized for wear or cosmetics.

Consider instead

7075 — when the aluminum part needs near-steel strength.
2011 — for high-volume turned parts, machinability first.
303 stainless — when strength and corrosion both outrank weight.

Typical applications

Robotics and automation shafts
Idler rollers and guide shafts
Instrument and camera hardware
Lightweight fixture components

Ready-made starting points in this material's wheelhouse: Thread-mount idler shafts.

Frequently Asked Questions

About 65% lighter — 0.098 lb/in³ versus 0.284 for steel. The same 1" × 12" shaft drops from roughly 2.7 lb to under 1 lb.

For light and moderate torque, yes — T6 temper is a genuine structural material. Watch deflection rather than strength on long spans, and step to 7075 or steel when torque gets serious.

Yes — 6061 anodizes exceptionally well, clear or colored, and hardcoat anodizing adds real wear resistance to journals and sliding surfaces. Anodizing happens after machining.

Stocked as 6061-T6. Material and condition are paired — each grade ships in one condition optimized for our process; see all grades on the materials page.