Welcome to the ultimate steel showdown! In this battle of the blades, we will unveil the true superiority between two heavyweight contenders: Bohler M398 and M390 steel. These two high-performance steels have taken the knife industry by storm, captivating both knife enthusiasts and professionals alike.
Known for their exceptional strength, corrosion resistance, and edge retention, the competition between these steels is fierce. But what sets them apart? Which steel reigns supreme? That’s exactly what we aim to uncover in this article. We will dive deep into the composition and properties of each steel, exploring their differences and similarities.
From edge retention and toughness to ease of sharpening and wear resistance, we will leave no stone unturned in our quest for the ultimate winner. Whether you’re a seasoned collector or a newbie in the world of knives, join us on this thrilling showdown. Get ready to discover the steel that will elevate your cutting game to the next level. So, grab your favorite blade and let’s embark on this journey of steel supremacy!
What is Bohler M398 Steel?
Bohler M398 steel is a high Chromium martensitic steel produced following the Powder Metallurgy process by Bohler. It is an improvement of M390 steel and was introduced in the market in 2019. M398 steel contains more carbon and vanadium making it very hard steel.Bohler M398 steel has about 0.8% more carbon elements in its alloy and about 3.2% more Vanadium elements. The addition of these two increases the macro hardness by significantly increasing the carbide volume.
Because of its chemical composition, it offers excellent wear resistance and corrosion resistance, making it suitable for making wear-resistant tools. It is used to make knives, medical equipment, food processing tools, screws, and drilling tools, to mention a few.
Bohler M398 is stainless steel because it meets the 12 percent chromium content requirements to make steel stainless. With a composition of 20% chromium, it offers excellent corrosion resistance properties.
M398 Steel Composition
- Carbon C 2.70%: Increases the edge retention, hardness and tensile strength. It also improves steel resistance to wear, abrasion and corrosion.
- Chromium Cr 20.00%: Formation of Chromium carbides Increases hardness, tensile strength and toughness of the blade.
- Manganese Mn 0.50%: improves the strength and hardness of steel. When the steel is heat-treated, hardenability is improved with increased manganese.
- Molybdenum Mo 1.00%: It improves machinability and hardness.
- Vanadium V 7.20%: Increase wear resistance and toughness, it also improves corrosion resistance. High vanadium content enables formation of Vanadium Carbides.
- Silicon Si 0.50%: Improves grain structure for better hardness, however like Manganese it can increase brittleness.
- Tungsten W 0.70% Improves wear resistance and hardness, mostly added to tool steel
Related: Discover The Best Serrated Knives
Properties of M398 steel
Bohler M398 Steel Hardness
Bohler M398 steel has a high hardness of 62-65 HRC, associated with the high amounts of carbon and vanadium in its composition. This high hardness offers great wear resistance, edge retention but sacrifices the toughness.
Bohler M398 Steel Wear resistance
M398 steel passes with flying colors when it comes to wear resistance. Wear and tear from daily use and abrasion have nothing on this steel. If you are on the market searching for a knife that will serve you for a long time without losing shape, look into the varieties of M398 knives.
The exceptional wear resistance is brought about by the additional carbide volume in its composition from the super tough vanadium carbides.
Bohler M398 Steel Edge Retention
M398 is an improvement of M390, which is known to offer excellent edge retention. With increased carbon and vanadium in its composition, M398 retains a sharp edge for a very long time.
The edge retention of M398 knives contributes to their long lifespan because the blade is not sharpened frequently; hence it does not wear out faster.
Bohler M398 Steel Corrosion Resistance
The amount of Chromium in steel determines its corrosion resistance capabilities. As already stated, M398 contains 20% chromium, which contributes to excellent corrosion resistance. For this reason, M398 steel is a suitable material for making knives to be used in highly corrosive and humid environments.
M398 knives are highly resistant to corrosion, but you should invest in maintenance. Please do not leave the blades in water for a long time and wash and dry them after use to increase their lifespan.
Bohler M398 Steel Toughness
As a rule of thumb, hard steel does not offer good toughness. Being very hard steel, the toughness of M398 suffers. However, this is not to say that it has the poorest toughness out there.
It offers decent toughness to prevent its blades from chipping and breaking easily when exposed to pressure and tough applications. However, be careful not to use knives made from this steel on very tough applications like batoning. It will be like setting them up for failure.
Ease of sharpening Bohler M398 Steel
The hardness and wear resistance of steel determines how easy it will be to sharpen. With high hardness and excellent wear resistance, we expect M398 to be challenging to sharpen, which is true. It sacrifices sharpness over hardness and high wear resistance.
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M398 Steel Comparison
M398 vs. M390
Bohler M398 is an improvement of M390; therefore, we expect it to offer better performance. It contains more Carbon and Vanadium hence offering higher hardness with better wear resistance and edge retention. M398 steel has about 0.8% more carbon elements in its alloy and about 3.2% more Vanadium elements. The addition of these two increases the macro hardness by significantly increasing the carbide volume.
According to Bohler, M398 steel has an excess of 30% carbide volume compared to the already outstanding M390 steel. The higher amount of carbides makes it extremely hard but reduces the toughness of M398 over M390 steel.
They contain the same amount of Chromium hence offer almost the same level of corrosion resistance. Sharpening Bohler M390 steel is easier due to the relatively low carbide volume compared to M398 steel.
M398 Steel vs. D2 steel
M398 offers better performance because it has higher hardness, better edge retention, wear resistance, and toughness. Also, M398 provides better corrosion resistance because it is stainless steel, while D2 is semi-stainless. On the other hand, sharpening D2 is easier. D2 steel is old steel and can’t be compared in performance to the new powder metallurgy steel.
See Also: CPM MagnaCut Steel, new steel with great edge retention and toughness.
Is M398 good knife steel?
Bohler M398 steel is a good steel for a knife because it offers excellent edge retention, great wear resistance, outstanding corrosion resistance, and decent toughness. On the downside, it is not easy to sharpen, and it is expensive.
In my opinion, I do not see a need of getting this steel over M390 as the improvement is very minimal and it sacrifices user-friendliness in terms of ease of sharpening and toughness.
I would prefer steel that cuts across in terms of edge retention, ease of sharpening, and toughness. Most high-end and mid-range steels (S35VN, N690, and 14C28N) would provide these features without necessarily being as expensive as M398 steel.
- Iconic Design - Inspired by TSA guidelines, the Roadie XL reimagines the classic penknife with a modern twist, offering a sleek and versatile tool for everyday use.
- Dependable - Crafted with a non-locking notched-joint mechanism and durable M398 stainless steel blade, the Roadie XL is built to deliver reliability in every task.
- Game Changer - Featuring Spydercos distinctive Double Dent design for easy, fingernail-free blade opening, the Roadie XL sets a new standard for convenience and innovation.
- Safe to Use - Designed with a textured index-finger choil and contoured handle scales, the Roadie XL provides a secure and comfortable grip, enhancing user safety.
- Superior Performance - Equipped with a full-flat-ground sheepsfoot blade and deep-pocket wire clip, the Roadie XL combines precision cutting with top-of-the-pocket portability for ultimate functionality.
- [ Extremely Sharp and Sturdy ] This fixed blade knife with leather sheathis made of M390 stainless steel with 4mm thickness wihch has excellent strength, making it better for heavy-duty tasks.
- [ Nice quality leather ] The handmade leather sheath of this knives built sturdy with nice stitching and rivet reinforcement at the top forms the worthy frame for this edc knives.
- [ Safety and Comfortable Ergonomic Handle ] This full tang survival knife has a good finger guard to keep your hand from sliding toward the blade and help you maintain balance it feels fairly safe when you use it to hack at stuff.
- [ Thick Spine and Solid Weight] Well built, full tang through the handle. This fixed blade hunting knives will stand up to hard use, the full tang construction provides superior control and greater pressure when cutting and chopping.
- [ Made for Work and Outdoor Activities] This Survival knives is crafted from high quality and sturdy material, nice and sharp, great for cutting rope and for splitting logs, for professional and tourism lovers alike.
- Blade Material: M398 Stainless Steel
- Handle Material: OD Green Micarta
- Knife Length: 3 1/2 Inches(folded/closed)
- Country of Manufacture: Italy
- Includes: Knife, Box and a leather pocket sheath
