Blade Steel

S125V - Blade Steel

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Steel Composition

carbon 3.30 %
molybdenum 2.50 %
vanadium 12.00 %
niobium 0.50 %
tungsten 0.55 %

The S125V knife steel, a high-end stainless steel variant from the Crucible Industries in the USA, is known for its outstanding edge retention capacity and impressive hardness. It is primarily composed of high amounts of carbon and prominent chunks of vanadium that significantly contribute to its unparalleled durability and longevity. The presence of minimal amounts of other elements, including tungsten, niobium, and molybdenum, also contribute to the integrity of its chemical composition. This steel variant is largely beneficial for high-performance knives that require frequent, intensive use.

What are the Benefits of S125V?

The S125V is an extraordinary knife steel that embodies a variety of benefits. It is immensely popular for its high-performance features and immense durability. Its exceptional edge retention capability, augmented by the presence of high carbon and vanadium levels, makes it extremely reliable for strenuous cutting operations. This knife steel is favored and used extensively by professionals who demand high-performance tools.

Disadvantages of S125V for Knives

Despite its high-end features, the S125V knife steel comes with its set of disadvantages. Its main downside is that it can be quite tough to sharpen due to its high hardness rating. Thus, sharpening tools and techniques may have to be upgraded to properly maintain this blade steel. Additionally, its high hardness makes it susceptible to chipping and cracking under high pressure and extreme conditions.

Steel Rating

Steels with good edge retention will stay sharp longer, reducing the need for frequent sharpening

Edge Retention

6/6 Points

Toughness is the steel's ability to absorb energy and deform without breaking


3/6 Points

Corrosion Resistance measures how well the steel can resist rust and oxidation

Corrosion Resistance

3/6 Points

Sharpenability refers to how easily a knife blade can be sharpened to its desired edge


1/6 Points

This is a relative measure based on typical market values. The actual price can vary widel


1/6 Points

A higher HRC number typically indicates a harder steel, which can hold a sharper edge


65 - 67 HRC
Please be aware that this rating should be understood as a comparative measure. It's simply a rough estimation in relation to other knife steels.

How Rust Resistant is S125V?

The S125V blade steel boasts significant amounts of chromium in its composition; therefore it exhibits commendable rust-resistant properties. However, like any other knife steel, it requires proper care, storage, and maintenance to maintain its excellent stainless attributes.

How Strong is S125V?

The hardness of S125V knife steel is quite remarkable, ranging between 65 and 67 HRC. This gives the blade steel a extremely high wear resistance and contributes to its exceptional edge retention. However, this means the blade is less flexible and could experience cracks or chips under stressful cutting conditions.

For what is S125V known for?

The S125V knife steel is renowned for its exceptional edge retention and impressive hardness rating. It is preferred by professionals for making high-end tools that can withstand regular use without frequent maintenance. With its professional performance and resourceful attributes, the S125V is truly a top-tier knife steel.

Similar blade steels


In conclusion, the S125V knife steel stands out as one of the highest performance knife steels available in the market today. The balance of its chemical composition offers an optimal blend of hardness and corrosion resistance. While it is considered a premium knife steel, it may necessitate extra efforts in maintenance and care. However, its performance and durability make up for these minor inconveniences.