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Choose a carbide-tipped non-ferrous-metal blade with Triple Chip Grind teeth, then match its diameter, arbor, and RPM rating to your miter saw.
For the full breakdown, see our best 12 Inch Miter Saw Blade For Aluminum guide.
Aluminum on a miter saw usually ends one of two ways: a clean, burr-free cut in a few seconds, or a blade that grabs, gums up, and leaves a jagged edge. The difference is almost never the saw — it’s the blade. Choosing a miter saw blade for cutting aluminum comes down to one rule: start with a carbide-tipped, non-ferrous-metal blade, almost always a Triple Chip Grind (TCG) design, then confirm it fits the saw’s diameter, arbor, and RPM rating.
Price and brand matter less than those numbers. The spec plate on the blade and the listing you buy from tell you everything you need.
Why Wood Blades Fail On Aluminum
Wood blades are ground to shear soft fibers, and they react badly to metal: teeth load up with aluminum chips, dull fast, and throw burrs. Non-ferrous-metal blades avoid that with TCG teeth and controlled hook angles.
TCG alternates a blunt beveled tooth with a flat raker, so each tooth peels a thin sliver of metal instead of scraping at it. Norske’s blade guide for non-ferrous metal names TCG as the geometry behind cleaner, burr-free cuts on aluminum sheet, tube, bars, and framing, and it also resists clogging and blowout.
Hook angle — the tilt of the tooth face — controls how hard the blade pulls itself into the cut. Current aluminum blade listings show hook angles from -5° to 15° depending on the design, with low or negative values most often specified so the teeth slice instead of self-feeding. A grabby blade is how kickback starts, which is why better aluminum blades add anti-vibration or expansion slots.
What Size, Arbor, And RPM Does Your Saw Need?
The blade must match the saw on three counts: diameter, arbor hole, and maximum speed. Confirm the saw type first — miter saws, sliding compound miter saws, and radial arm saws all take these non-ferrous blades, while production double-head aluminum saws use machine-specific blades that are not interchangeable.
Work through the list in order:
- Match diameter and arbor. Common pairings in current listings include a 6½ in blade with a