CPM-154 is the powder metallurgy version of 154CM, and the CPM process makes a meaningful difference. Where conventional 154CM can show carbide segregation that affects toughness and grindability, CPM-154's uniform carbide distribution produces a tougher, finer-grained steel that takes a cleaner edge and is more consistent to work with. It's a premium stainless that delivers reliable corrosion resistance alongside strong edge retention — a solid, well-rounded choice proven in both production and custom work. Sean O'Hare built most of his catalog on CPM-154, and the consistency of his results is a testament to the steel's character.