Large Diameter 6061-T6 Aluminum Round Bar, 80–100mm Billet

Large Diameter 6061-T6 Aluminum Round Bar, 80–100mm Billet

This collection covers large diameter 6061 aluminum round bar from 80mm to 100mm: solid, T6 heat-treated bar used as billet stock and sliced round blanks for mold blocks, heavy flanges, housings, and parts machined entirely from solid. These heavy sections are chosen when a component must be carved out of one continuous piece of aluminum rather than welded or assembled.

Every length is true solid 6061 aluminum rod — never tube, never cast — supplied as stock lengths, sawn billet blocks, or cut aluminum bar stock and round blanks from RapidKeen. Need diameters above 100mm? See the note below for sizes up to 600mm.

Available Diameters in This Collection

Why Designers Start From Large 6061 Billet

At 80–100mm, a large diameter 6061 aluminum round bar is really a block of machinable metal. Designers specify it when a part needs deep concentric bores, wide bolt circles, thick walls, or a one-piece body that cannot tolerate welds or fastener joints — mold and die blocks, heavy housings, end caps, wheels, and mounting flanges. In the T6 temper the solid section stays rigid under clamp and service loads, and at roughly one third the density of steel it keeps machine tables, rotating assemblies, and finished equipment far lighter. Solid 6061-T6 billet also machines far more predictably than castings: no porosity surprises, consistent hardness from face to core, and a clean response to welding, anodizing, and other finishing.

Round Bars and Round Blanks (Discs / Slugs)

The same large diameter 6061 aluminum round bar can be supplied as long billet or sliced into round blanks — thick discs or slugs cut to your required thickness. Round blanks are the efficient starting shape for face-turned parts such as end caps and lid plates, wheel and pulley blanks, piston and gland discs, bearing retainers, flange plates, and round mold inserts. Sawing the discs before they reach your shop saves machine time and material handling, while full billet lengths suit shops that prefer to slice their own blanks.

Common Applications

What This Range Is Used For

Machining, Welding & Finishing

Large 6061-T6 aluminum round bar is built for aggressive stock removal: facing, deep boring, contoured turning, and wide pocket milling all cut with light, continuous chips, so a billet block reaches finished shape much faster than steel, with far less wear on tooling. The solid section supports concentric bores, dense bolt patterns, cross-holes, and annular grooves from minimal setups. It welds by MIG or TIG with 6061 or 4043 filler, noting the local reduction of T6 strength near the weld, and it finishes by bead blasting, brushing, polishing, powder coating, or clear and colored anodizing with even results across the large surface area.

Industries That Buy This Range

Ordering, Sawing & Cut Length

Choose any diameter from 80mm to 100mm, then order full stock lengths, sawn billet blocks, or sliced round blanks at the thickness you need. Heavy sections are sawn square and packed to protect the machined surface. Single one-off blocks and production quantities of aluminum bar stock are both available. For diameters above 100mm up to 600mm, contact us to confirm stock and lead time before ordering.

Quick Questions

View all 6061-T6 aluminum round bar sizes. Adjacent range below: the 55–75mm (3 inch class) collection.

For mold blocks, heavy flanges, housings, and sliced round blanks, the large diameter 6061 aluminum round bar collection in 80–100mm supplies solid T6 billet stock — sawn to your size and ready for serious machining.