440C's primary advantage is superb rust resistance. knifenewsroom.com - Knife Newsroom™ What’s the difference between CPM-154 vs 154CM? 300 series What it is: CPM 154 is the "Crucible Particle Metallurgy" version of 154 CM stainless steel, and is widely regarded as a "super steel" for its properties and performance. The CPM manufacturing process produces a uniform distribution of the carbides in this grade, giving this CPM 154 easier grinding and polishing, plus better toughness, than conventional 154 CM, while retaining similar heat treat response and wear properties. ATS-34 is produced by Hitachi Metals. In CPM-154, he found a material that allowed for a flawless finish. CPM 154 is CPM-manufactured version of Crucible’s standard 154 CM. Re: 154 CM or CPM 20CV steel for bench made ? CPM 154 vs. 154CM. With the powder metallurgy process and the accompanying uniform distribution of carbides, it eliminated the “road rash” issue. CPM-154 is not old as dirt. The powder metallurgy version was called CPM-154 and was first produced in 2004 [7] with broader availability around 2005-2006 [40]. Post by kootenay joe » Wed Sep 28, 2016 5:13 pm A point hardly ever mentioned is that it is enjoyable to re-sharpen a blade that is relatively easy to remove a bit of steel. 154CM is a conventionally cast stainless-steel, while CPM-154 is powdered steel. We almost titled … The CPM process gives it a significantly higher toughness and better machinability than the 154CM. Both steels have the same properties except that the CPM 154 is the Particle Metallurgy version. Advantages: Toughness, edge retention, corrosion resistance. 154 and ATS 34 declined in popularity with the emergence of CPM's S30V and some of the powdered steels like 440V and now even further with Hitachi's latest, ZDP 189. CPM-154 is not old as dirt. 154CM is a conventionally cast stainless-steel, while CPM-154 is powdered steel. Here grinding a blade in his shop, David Sharp said CPM-154 exhibits excellent edge retention, sharpenability and corrosion resistance. CPM 154 is the CPM manufactured version of Crucible’s standard 154 CM. Are they the same alloy,,,,,on paper yes,,,, in the world of metallurgy,,,,,no. 154CM was first developed for jet turbine blades in the 1970’s, so it’s quite a … CPM-154 vs 154CM: What’s the difference? CPM 154 The CPM manufacturing process produces a uniform distribution of the carbides in this grade, giving this CPM 154 easier grinding and polishing, plus better toughness, than conventional 154 CM, while retaining similar heat treat response and wear properties. CPM 154. The latter two are considered premium cutlery steels for both folding knives and fixed blades. In the late 1990's Cricuble again became interested in custom steels for the knife industry and introduced CPM 154 with similar alloy content but with a far different process to produce the steel, Crucible Powdered Metal is a cleaner method for small quantities. While the balance between wear resistance and toughness is not as good for CPM-154 when compared to S30V due to the lack of vanadium carbides, its ease in finishing means that it has become very popular [41]. CPM 154 is identical to 154CM in composition, however it is produced by Crucible using CPM Process, bringing all the benefits of Particle Metallurgy technology. The CPM process gives it a significantly higher toughness and better machinability than the 154CM.
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