Which knife blade material is the best?

Knife Steel composition chart · The best EDC folding knife. The CPM-S90V, CPM-S110V, CPM-10V and Bohler K390 fit into this category. Both the CPM-REX 121 and the Maxamet belong to this category. As a side note, pure tungsten carbide blades (from brands like Sandrin) can have very high levels of edge retention, but they're not made of steel.

The stainless steel blade is one of the most popular for knives because of its durability and resistance to corrosion. Stainless steel is a metal alloy generally made of at least 11% chromium, iron, nickel, molybdenum and carbon. However, there are many different grades and compositions of stainless steel that vary with the properties used to manufacture the material. Carbon steel, more specifically steel with a high carbon content (0.8% and more), is suitable for the manufacture of blades.

The high amount of carbon present in steel provides the toughness, strength, edge grip and corrosion resistance needed in a large knife. Series 10 steels are the most commonly used in the manufacture of blades; the “10” indicates that it is smooth carbon steel with a maximum of 1% manganese, and the last two digits indicate the carbon content (1045 has 0.45% carbon). In reality, all modern steels work well enough for most users, so consider spending more time on other aspects of the pocket knife, such as knife handling and other features. Other factors include how thick the edge is, how blunt the knife was at the beginning, the nature of the heat treatment, and what you use to sharpen the knife.

This process places and holds the sheet between two aluminum plates to allow it to form martensite and keep the blade straight. Thomas is a friend of ours at Blade HQ and, with his help, we worked to create this steel guide for knives. You can usually track the type of steel knife manufacturers use on their websites if it's not stamped on the knife itself. In the knife industry, different types of steel are created by varying the types of additive elements, as well as the way in which the blade is rolled and heated (that is, I recently came up with the idea of sharpening the blade of a planer like a knife and testing its performance).

So you're right that a D2 blade cuts more CATRA cards than an AEB-L *when both are sharpened at the same angle*, but the AEB-L has much greater strength and can therefore withstand sharpening at a sharper angle without splinters, and a sharper angle is more important for continuing to cut. More capacity than resistance to wear and tear. When choosing the best pocket knife, you should pay special attention to the type of steel used in the blade. Heat treatment and edge geometry may mean more to blade performance than the specific steel used in the blade.

I know that titanium blades are not normally made, but I deduce that Ti is extremely resistant to corrosion, is used for saltwater applications, etc. Shock resistance alone does not impair the performance of the blade, but when it comes to other features, it is more useful in a small knife such as a folder, not desirable. But like a thin-wood gun aged and darkened, the blade of a bluish carbon knife has a patina rich in stories. Heat treatment is a part of the knife manufacturing process that is designed to help harden the steel of the blade for use.

For example, below is a video comparing an ESEE 1095 knife at 55-57 Rc and a MagnaCut knife at 62.5 Rc, both with the same cutting angle.

William Mlynek
William Mlynek

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