XHP

Overview

XHP, often listed as CTS-XHP, is a stainless steel that behaves a little like a stainless version of D2 in buyer terms: good edge retention, decent toughness, better corrosion resistance than D2, and more sharpening effort than simpler stainless steels.

It is a good EDC steel for someone who wants more edge life than entry-level stainless but does not want the full sharpening penalty of very high-wear steels. It is also a steel where heat treatment and geometry matter a lot.

Buy XHP when you want a capable working stainless. Do not buy it expecting saltwater-proof behavior or the wear resistance of M390-class steels.

Composition and History

CTS-XHP is made by Carpenter Technology. It is a powder metallurgy stainless steel with high carbon and high chromium, which is why knife users often compare it with D2 while also noting that XHP is actually stainless in normal use.

That comparison is useful but incomplete. XHP can be smoother to own than D2 because it resists corrosion better, but it still has enough carbide content that sharpening takes more patience than steels such as 14C28N, AEB-L, or S35VN.

The best examples of XHP tend to be thin, well-treated folders or slicers. Thick grinds make it feel ordinary.

Performance Tradeoffs

Edge Retention

XHP has good edge retention for EDC and utility cutting. It is a meaningful step up from many simple stainless steels, especially in cardboard, packaging, and general abrasive daily work.

It is not the edge-retention ceiling. If your main use is long abrasive cutting and sharpening time is less important, compare it with M390, S90V, S110V, or tool steels such as CPM-M4.

Toughness

Toughness is good enough for normal folding-knife use. XHP can handle daily cutting, light outdoor work, and practical utility tasks when the edge angle is sensible.

It is not a hard-use fixed-blade steel. If you expect twisting cuts, chopping, batoning, or frequent impact, look at tougher options such as CPM-3V or CPM-CruWear.

Corrosion Resistance

XHP has very good corrosion resistance for everyday stainless use. It is much less fussy than D2 and much easier to carry around sweat, humidity, and food.

It is still not a saltwater specialty steel. For fishing, kayaking, or constant wet carry, LC200N, Vanax, or MagnaCut may be better choices depending on budget and edge-retention needs.

Ease of Sharpening

Sharpening XHP is moderate. It is not terrible, but it benefits from diamond or CBN abrasives, especially when reprofiling or repairing damage. Ceramic rods are good for touch-ups.

Owners with only soft hardware-store stones may find it slow. A basic diamond plate plus a ceramic rod is a much better match.

Best Use Cases

XHP is a good fit for:

EDC folders that see cardboard, packaging, rope, and food
Thin slicers where the steel’s edge retention can show
Users who want better corrosion resistance than D2
Buyers with diamond or ceramic sharpening gear
Knives priced below the top super-steel tier

It is especially attractive when the maker has a known good heat treatment. Poor geometry can make XHP feel like any other middling stainless steel.

When Not to Choose

Do not choose XHP for saltwater neglect or constant wet carry.
Do not choose it if you only have basic sharpening stones and dislike slow sharpening.
Do not choose it for heavy impact or prying.
Do not pay premium super-steel pricing unless the knife design itself justifies the cost.

Practical Buying Guidance

The right XHP knife should be thin enough behind the edge to cut efficiently. If the grind is thick, the steel’s advantages will not matter much.

Before buying, check:

Is the knife ground for slicing, or just marketed around the steel?
Does the maker have a good reputation with XHP?
Do you own diamond or ceramic sharpening equipment?
Would S35VN be easier to maintain for the same use?
Would M390 be worth the extra sharpening effort for your cutting volume?

XHP rewards a buyer who wants a balanced working edge and can maintain it properly.

Comparison Context

XHP vs D2: D2 is less stainless and often cheaper. XHP is usually the easier everyday carry choice when corrosion resistance matters.
XHP vs S35VN: S35VN is easier to sharpen and very practical. XHP usually leans a bit more toward edge retention.
XHP vs M390: M390 offers higher wear resistance but is harder to sharpen and usually appears at higher prices.
XHP vs MagnaCut: MagnaCut is the more modern balanced stainless option. XHP can still be a good buy when the knife design and price are right.

Continue Learning

Read How to Choose Knife Steel by Use Case for a fast decision framework.
Read CATRA Myths for Buyers to interpret edge-retention claims correctly.