Best Steel for Fillet Knife in 2024

What is the Best Steel for Fillet Knife?

The performance of a knife mostly depends on the steel used on it. Well, not only the performance, the steel of the knife also determines its durability, hardness, agility, corrosion resistance, etc. As a result, it’s highly essential to select a knife that is made of high-quality steel.

Flexibility is a very crucial factor to consider while selecting a fillet knife. The flexibility of the knife also depends on its steel. So, which is the best steel for fillet knife? Let’s check it out.

The Best Steel for Fillet Knife

Here are some of the most popular and reliable varieties of steel for fillet knives. Check out detailed info about the knives from below.

Bohler Uddeholm M390

The Bohler Uddeholm M390 is a premium variation of stainless steel that is used by top companies around the globe. Due to the high-grade esteem of this stainless steel, it makes the most reliable knives. Some of the properties that you can be assured of from this type of knife include superior toughness, excellent edge retention, and rust resistance. They are an excellent choice for fillet knives.

H1 Steel

The H1 steel is a legendary variation of steel made in Japan that held excellent cutting capability while resisting rust. One of the unique things about the steel is it’s precipitation-hardened. That means it is naturally hard without any heat treatment. Besides, it has 1% nitrogen instead of carbon which makes it excellent rust-resistant. Furthermore, the type of steel can hold the edge like the premium carbon steel without causing any rust.


The Lc200N is an H1 steel knife with an excellent corrosion resistance capability of up to 90%. It also arrives with impressive edge retention. The Lc200N is the most popular choice for fish fillet knives because of the property it offers. Because of these characteristics, they can perform well in wet and humid conditions likes boats and fishing.

They may not be the toughest variation of knives out there but edge retention and rust resistance make them a good choice for water applications.


The CPM S30V is another popular variation of stainless steel that makes a good choice for fillet knives. It is a well-balanced variation of all the properties that you will want from a knife. It is easy to sharpen, corrosion resistance and shows excellent edge retention. As made of the premium S30v steel, you can be assured of a long-term performance from the knives. Overall, it is a great combination of balance and performance.

What Makes the Steel Best for Fillet Knives?

Here are some crucial factors that define the quality of stainless steel.

Edge Retention

Edge retention is something very crucial to consider while purchasing a fillet knife. That’s because the sharpness of the knife will depend on this property. Whether you are cutting veggies, boning meats, or filleting fishes, this is something that is a must. Without the edge retention, the knife will be dull and pretty hard, and uncomfortable to use. So, while purchasing the knife, you must check the edge retention of it.

Corrosion Resistance

Corrosion Resistance – this one thing is a must while purchasing the knife. It’s obvious that the knife will get wet while filleting. Furthermore, chances are high that you will fillet both freshwater and saltwater fishes. That means there are high chances of corrosion affecting the edges. If you don’t want the ill effects to affect the knives, make sure to pick the one which is designed to prevent rust.

Carbon steel and H1 steels are two of the variations of stainless steel that are known for their corrosion resistance. You should consider selecting a blade that has these properties. Besides, it would be better if there is an additional corrosion-resistant coating for further durability.


Flexibility is something that is unique to fillet knives. You will want a knife that can bend enough to cut through the flesh of the fishes while holding the edge. Typically, the knives need to be very thin for this. Most of the knives that are designed for filleting should arrive with this property.


Typically, toughness is not so much important to consider while purchasing a fillet knife as it’s the opposite of flexibility. That’s because you will mostly cut through the fishes which have soft flesh. However, if you are aware of the durability of the knife, this factor needs to be considered. Toughness will depend on the type of stainless steel you are choosing. The best fillet knives should be equally tough and flexible.

Ease of sharpening

Some of the stainless steel is easy to sharpen while some others can be pretty hard. Filleting typically doesn’t eat up the sharpness of your fillet knives. However, they can still become dull while filleting large quantities at once. As a result, you will want a fillet knife that is easy to sharpen. If you want a knife that is easy to sharpen, then go for the one that is made of soft steel. You may also consider purchasing a fillet knife that brings you a portable sharpener.

Heat Treat

Heat treatment is not required to consider while if you are picking an H1 knife as they don’t require the characteristic. However, for the other varieties, it’s an essential thing to consider. That is because the strength and performance of the knife will depend on it. Try to go for a knife that is heat-treated for long-lasting performance.


Filleting is a fun thing to do as long as you have a good-quality fillet knife. While selecting the knife, you need to be aware of the steel used in it. You will require selecting the one that arrives with a compatible steel blade that is good for filleting. To make things easier, you can make sure that the knife is made of one of the steels mentioned above. Due to their properties like corrosion resistance and flexibility, they will the best choices to enjoy a comfortable and smooth filleting experience.


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