If you've spent any time reading about knife steel lately, you'll have run into CPM MagnaCut. It's the steel knife nerds can't stop talking about, and for good reason. For a long time, choosing a blade steel meant choosing what to give up: edge retention, toughness or rust resistance. MagnaCut is the rare steel that doesn't make you pick.
We make four pocket knives in MagnaCut, all part of our Aviary collection of Australian bird knives. Here's what the steel actually does, why it makes so much sense in Australia, and how to choose between the four.
What is CPM MagnaCut?
CPM MagnaCut is a powder-metallurgy stainless steel designed by metallurgist Dr Larrin Thomas and produced by Crucible Industries in the USA. It was built from the ground up for knives, with one goal: deliver the toughness and edge-holding of a high-end tool steel without giving up corrosion resistance.
The clever part is in the chemistry. In most stainless steels, a lot of the chromium gets locked up in large carbides. That helps wear resistance but makes the blade more brittle and leaves less chromium free to fight rust. MagnaCut leans on very fine vanadium and niobium carbides instead, which leaves the chromium free to do its job. The result is a blade that is:
- Tough: far more resistant to chipping and rolling than most high-hardness stainless steels.
- Long-lasting at the edge: it holds a working edge well beyond common pocket knife steels.
- Seriously rust-resistant: among the most corrosion-resistant knife steels you can buy.
That balance is why MagnaCut has quickly become the benchmark steel for premium pocket knives.
Why MagnaCut makes sense in Australia
Australian conditions are hard on a pocket knife. Salt air on the coast, humidity up north, sweat in a pocket all summer, fishing trips, tailgate lunches and red dust in the outback all take their toll. A steel that holds its edge, resists chipping and shrugs off rust is exactly what an Australian everyday carry needs.
It's also why we chose MagnaCut for some of our most-carried birds.
Our four MagnaCut pocket knives at a glance
| Knife | Blade | Hardness | Weight | Lock | Price |
|---|---|---|---|---|---|
| Bella, the Blue Wren | 56.5mm drop point | 63–64 HRC | 100g | Liner lock | $195 |
| Max, the Magpie | 75mm drop point | 63 HRC | 129g | Liner lock | $245 |
| Lily, the Rainbow Lorikeet | 75mm | 62 HRC | 113g | Button lock | $275 |
| Ian, the Ibis | 102.5mm spearpoint | 59 HRC | 102g | Liner lock | $275 |
All prices in AUD. Bella, Max and Lily open with a flipper tab on a caged ceramic ball-bearing pivot; Ian uses a thumb flipper disc on a thrust-bearing pivot.
Bella, the Blue Wren: MagnaCut under $200
Small enough for a keyring or a handbag, Bella is the most affordable way into MagnaCut in our range, and the hardest of the four at 63–64 HRC. The 56.5mm drop-point blade handles boxes, threads, fruit and paracord, and the hardwood scales with blue and marble resin echo the superb fairy-wren's electric-blue plumage.
Best for: a first premium knife, a gift, or anyone who wants top-shelf steel in the smallest possible package.
Max, the Magpie: the classic
Our flagship and one of our two equal best-sellers. Max pairs a 75mm drop-point MagnaCut blade, hardened to 63 HRC, with dark ebony and white pearl resin scales in the magpie's black and white. A liner lock, titanium-coated clip and a smooth flipper action make it the most traditional, timeless knife of the four.
Best for: the classic everyday carry, and the knife enthusiast who wants great steel in a beautiful natural-material handle.
Lily, the Rainbow Lorikeet: the outdoors all-rounder
Loud, colourful and built for a full life outdoors. Lily runs a 75mm MagnaCut blade at 62 HRC, a touch softer than Max and Bella for extra toughness, with Damascus G10 scales that stay grippy when wet. A button lock makes it easy to open and close one-handed, and at 113g it's lighter than Max despite the same blade length.
Best for: camping, fishing and tailgate lunches, or anyone who wants a hard-working MagnaCut knife with a synthetic handle.
Ian, the Ibis: the biggest blade
Better known as the bin chicken, and one of the most-loved knives in the Aviary. Ian has the longest blade of the four: a 102.5mm MagnaCut spearpoint with a strong, centred tip that's excellent for piercing and detail work. At 59 HRC it's tuned for toughness, so it's the one to reach for when a job gets rough. G10 scales, a titanium clip and a thumb flipper disc keep it to just 102g, barely heavier than tiny Bella despite nearly twice the blade.
Best for: anyone who wants a full-size MagnaCut blade that stays light in the pocket, plus a bit of character.
Looking after a MagnaCut blade
- Rinse and dry it. MagnaCut is extremely rust-resistant, but salt water or acidic food left on any blade is never a good idea. A quick rinse and dry after fishing or food prep is all it needs.
- Sharpen with the right tools. At 59–64 HRC, MagnaCut is harder than most everyday steels and takes a little longer to sharpen. Diamond or ceramic stones work best, and a few strokes on a ceramic rod keeps the edge keen between sharpenings.
- Keep the pivot clean. A drop of knife oil on the bearing pivot now and then keeps the action smooth.
Frequently asked questions
Is MagnaCut worth it over a steel like 14C28N? For most everyday tasks, a good 14C28N knife does a great job, and it's what most of our Aviary uses. MagnaCut is for people who want an edge that lasts noticeably longer, more resistance to chipping at high hardness, and top-tier rust resistance. If you carry every day, work outdoors or near salt water, it's a genuine upgrade.
Is MagnaCut stainless? Yes. It's one of the most corrosion-resistant knife steels available, which is why it suits Australia's coastal and humid conditions so well.
What's the cheapest MagnaCut pocket knife you make? Bella, the Blue Wren, at $195 AUD.
Which has the longest blade? Ian, the Ibis, with a 102.5mm spearpoint.
Which one is the best all-rounder? For most people, Max. If you'll use it outdoors a lot or prefer a synthetic handle, go Lily.
All four MagnaCut knives are part of the Koi Aviary, a growing collection of pocket knives named after Australian birds and designed in South Australia. See every bird in the flock in our October 2026 Aviary update.
