There is no single best steel
MagnaCut is an outstanding balanced EDC choice; S90V or 15V may hold an edge longer; LC200N or Vanax is better around saltwater; 14C28N may be the best value.
How to read this guide
Steel properties trade against each other. More carbide can help wear resistance, but it often reduces toughness and makes sharpening harder.
Why heat treat matters
Chemistry describes potential. Heat treatment, hardness, tempering, cryo, and maker execution decide how much of that potential appears in the knife you buy.
CATRA vs real-world retention
CATRA is useful for abrasive wear comparison, but real use also involves edge angle, blade stock, cutting media, corrosion, damage, and how you sharpen.
HRC is not a quality score
Hardness can support edge stability and retention, but too much hardness can reduce toughness. A higher HRC number is not automatically a better knife.
Damascus is not a steel grade
Pattern-welded steel must be evaluated by the cutting core, component steels, weld quality, heat treat, and geometry. Unknown Damascus should not receive performance scores.
M390 / 20CV / 204P
These are grouped as a close family for buyers, but exact source names should be preserved in lab records and listings. Do not overwrite Böhler M390 as CPM-20CV.
Simple steel can be better
For thin geometry, rough use, field sharpening, or budget knives, AEB-L, 14C28N, 420HC, 52100, or 1095 can make more sense than a super steel.
Score direction
Scores run 1–10. For sharpening ease and heat-treat forgiveness, higher means easier or more forgiving. A zero means the category should not be scored.
Choose by use case
Click a category to filter the guide. This is the replacement for a single misleading “best steel” ladder.
Interactive steel guide
Search, filter, and sort the steel data object. The data is embedded in this file so future edits are straightforward.
Rebuild-ready data model
The live cards are generated from a single JavaScript array. Edit the data object, not scattered HTML.
{
id: "magnacut",
name: "CPM MagnaCut",
aliases: ["MagnaCut"],
manufacturer: "Crucible / Niagara Specialty Metals",
steelType: "PM stainless tool steel",
stainlessClass: "Stainless",
productionMethod: "Powder metallurgy",
budgetTier: "Premium",
bestUseCases: ["balanced", "saltwater", "toughness"],
avoidWhen: "Users whose only goal is maximum abrasive edge retention.",
scores: {
edgeRetention: 7,
toughness: 8,
corrosionResistance: 9,
sharpeningEase: 6,
heatTreatForgiveness: 7,
value: 8
},
confidence: "High",
summary: "75-word buyer-friendly summary.",
caveats: "Notes that prevent overclaiming.",
sourceIds: ["nsm-magnacut", "ksn-magnacut"],
reviewStatus: "validated"
}Source and reference section
Primary sources are steelmaker data sheets and Knife Steel Nerds metallurgical testing/explainers. Retailer guides and forums are intentionally not used as primary evidence.