440 Stainless Steel vs AUS 8 – What’s the Difference

440 Stainless Steel vs AUS 8

When it comes to choosing a high-quality blade for your knife, it can be difficult to know which material to choose. 440 stainless steel and AUS-8 are both popular choices for knife blades, but what exactly is the difference between them? In this blog post, we will take an in-depth look at the characteristics of both materials, to help you make an informed decision.

Difference Between 440 Stainless Steel and AUS 8


440 stainless steel is a high-carbon steel that contains 17% chromium and 1.1% carbon. On the other hand, AUS-8 is a blend of high-carbon steel with added vanadium, molybdenum and nickel. This alloy gives AUS-8 blades more flexibility and strength.


440 stainless steel blades have a Rockwell hardness of 58-60, which ensures excellent edge retention. In comparison, AUS-8 blades have a hardness of 58-60, which means they are less prone to chipping and breaking.

Corrosion Resistance:

440 stainless steel is known for its corrosion resistance, making it an ideal choice for applications where the knife may be exposed to moisture. However, AUS-8 blades have a higher amount of nickel which increases corrosion resistance and prevents rust formation.

Edge Retention:

440 stainless steel is known for its excellent edge retention, meaning it can keep its sharpness for longer periods of time. AUS-8 blades have a sharper initial edge, but tend to require more frequent sharpening.


440 stainless steel is generally less expensive than AUS-8. If you are choosing a knife based solely on cost, a 440 stainless steel blade may be the better option.


In conclusion, both 440 stainless steel and AUS-8 are excellent materials for knife blades. However, they differ in terms of composition, hardness, corrosion resistance, edge retention and cost. Depending on your preferences and needs, you may choose one over the other. We hope this article has been helpful in providing you with the information you need to make an informed decision on which material to choose for your blade. Remember, selecting the right blade is important, and it can make a significant difference in the performance of your knife.

Minal Jogale

Minal Jogale

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