NIOLOX (1.4153.03)




Basic parameters:
- Thickness tolerance: 0/+0,2 mm (the surface is not precision ground)
- Cutting tolerance: we cut the steel on band saws to a tolerance of 0/+3 mm (width x length)
- Delivery conditon: steel in non-hardened condition (steel requires hardening)
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| 432.00 zł | 23 % | 531.36 zł | 6 | ||||||
| 971.54 zł | 23 % | 1,195.00 zł | 2 |
OUR STEEL IS FOR YOU, IF:
| You value precisely cut material We cut steel using band saws, ensuring straight edges. We do not use guillotine shears, which can warp sheets and round their edges. | |
| Minor scratches or residue are not an issue for you Sometimes, a single steel sheet passes through the saw multiple times, which may cause slight surface scratches. Occasionally, delicate spot traces of surface corrosion (thin residue) may appear on the steel due to coolant remnants from the cutting process. Both scratches and residue can be easily removed during grinding. If you require steel with a perfectly clean surface, our product will not meet your expectations. | |
| You can straighten minor surface deviations yourself We strive to deliver perfectly flat steel pieces, but we cannot guarantee 100% flatness. Any slight surface curvature is not a material defect but rather a result of mill tolerances (flatness tolerances for rolled products). An experienced knifemaker can handle such a curvature in no time. | |
| You want to buy steel from trusted supplier We source our steel from the largest manufacturers in Europe and beyond. Each delivery is precisely marked with an industrial hand jet printer to prevent errors during cutting and storage. | |
| You don't like overpaying Our mission is to provide you with a piece of steel that is as close as possible to the shape of the knife you want to make. With us, you don't have to buy a large piece of steel and make unnecessary supplies or throw unnecessary surpluses in the trash. |
Example photo of a steel sheet:

Niolox Steel – Versatile Choice for Durable and Resistant Knives
Niolox steel, also known as 1.4153.03, is a high-quality tool steel produced by the German company Lohmann. It is characterized by excellent wear resistance, good corrosion resistance, and exceptional edge stability. Thanks to these properties, Niolox steel is a popular choice among knifemakers for the production of tactical, hunting, and kitchen knives. In this article, we will take a detailed look at its chemical composition, heat treatment, hardness, and compare Niolox steel with other steels used in knifemaking.
Chemical Composition of Niolox Steel – What Makes It Unique?
| Element |
Composition |
| Carbon (C) | 0,80% |
| Manganese (Mn) |
0,40% |
| Silicon (Si) | 0,40% |
| Chromium (Cr) | 12,50% |
| Molybdenum (Mo) | 1,10% |
| Vanadium (V) | 0,90% |
| Niobium (Nb) | 0,75% |
Niolox steel has a balanced chemical composition that ensures excellent wear resistance, corrosion resistance, and durability. Its composition includes:
- Carbon (C): 0.8% – Provides high hardness and hardenability.
- Chromium (Cr): 12.5% – Improves corrosion and wear resistance.
- Molybdenum (Mo): 1.1% – Enhances wear resistance and increases hardenability.
- Vanadium (V): 0.9% – Improves edge stability and wear resistance.
- Niobium (Nb): 0.75% – Forms very hard carbides, significantly increasing wear resistance and edge durability.
- Manganese (Mn) and Silicon (Si) – Improve the structure of the steel and its hardenability.
Niolox steel contains niobium, which forms very hard carbides, providing exceptional wear resistance and long edge life, even under intensive use.
Heat Treatment of Niolox Steel
Heat treatment difficulty shown at the top of this page reflects the most common choice in our survey of Polish knifemakers, prepared with input from an experienced heat treater. Please treat it as community guidance, not a specification.
“EASY-TO-HARDEN” denotes a more forgiving steel — one that delivers predictable, useful results even with minor deviations in process parameters.
“DIFFICULT-TO-HARDEN” calls for tight process control; small mistakes can quickly degrade the final outcome.
A FEW WORDS ON HEAT TREATMENT
Heat treatment is as much craft as it is science. Results depend on many variables: steel grade, blade thickness, furnace and atmosphere, soak temperature and time, quench medium and its temperature, and the tempering schedule.
At IK STAL we value transparency and reliable sources. Rather than promising one-size-fits-all recipes, we share manufacturers’ baseline data so you can adapt it to your own workshop. However, the data provided by manufacturers is not always detailed enough to constitute a complete “recipe” for heat-treating a thin knife. For specific settings, we encourage you to consult an experienced heat treater.
Hardening of Niolox Steel
Austenitizing
The austenitizing process for Niolox steel involves heating to 1040–1060°C (1900-1940°F) and holding at the set temperature for a specified time, counting from the moment the steel reaches a uniform temperature.
Practical austenitizing guidelines:
- The thicker the blade, the longer it should stay in the furnace.
- Keeping the steel in the furnace too long can lead to grain growth; too short a time leads to incomplete austenitizing (incomplete microstructural transformation). Put simply: at the correct temperature, leaving the steel in the furnace a little longer usually does less harm than taking it out too early. The biggest mistake is using an incorrect austenitizing temperature.
Quenching
After austenitizing, Niolox steel is cooled. Quenching media: oil.
As one option, the manufacturer also specifies hardening in a 180–220°C (355–430°F) salt bath.
Sub-zero Treatment (Optional)
In the available sources there are no clear contraindications to using sub-zero (cryogenic) treatment for Niolox steel. In practice, part of the knifemaking community applies it to potentially achieve an increase in hardness of around +1-2 HRC and improved dimensional stability. It should be emphasized, however, that the manufacturer neither describes nor recommends this step in the official specification, therefore the decision to use cryogenic treatment should result solely from the user’s own experience and informed choice.
Tempering of Niolox Steel
Tempering is the controlled reheating of a hardened blade to a chosen temperature and holding it for a set time to reduce brittleness and stresses from hardening and increase the knife’s impact toughness.
The manufacturer recommends tempering at 180-220°C (350-430°F) or 500-550° (930-1020°F) and in the product datasheet also provides the following notes:
| Tempering temperature | Notes |
| < 300°C (< 570°F) | higher corrosion resistance |
| 490-520°C (910-970°F) | higher toughness, tempering above 400 °C (750 °F) is not recommended if the tool will operate in salt- or acid-containing environments, as this may lead to pitting corrosion of the tool |
When tempering steel, two cycles are most commonly used, typically 1–2 hours each. However, since precise manufacturer data are unavailable, we recommend consulting experienced heat-treaters for detailed instructions.
Below is the tempering chart for Niolox steel.
Niolox Steel Tempering Chart
TU WKELIĆ WYKRES
Comparison of Niolox Steel with Other Knifemaking Steels
Niolox Steel vs. D2 Steel
D2 steel is known for its high wear resistance, but Niolox surpasses it in terms of corrosion resistance due to its higher chromium content. Additionally, the presence of niobium in Niolox provides better edge stability.
Niolox Steel vs. N690 Steel
N690 is a stainless steel often used in premium knives, offering excellent corrosion resistance. Niolox, however, provides better wear resistance and edge durability due to the presence of vanadium and niobium, making it more suitable for intensive use.
Niolox Steel vs. Elmax Steel
Elmax is a tool steel made using powder metallurgy, offering excellent corrosion and wear resistance. Niolox is a more economical option, offering similar edge durability but at lower production costs, making it accessible to a wider range of knifemakers.
Applications of Niolox Steel in Knifemaking – Best for Different Types of Knives
Hunting Knives
Niolox steel is an excellent choice for hunting knives due to its ability to maintain sharpness over extended periods and its corrosion resistance. Knives made from this steel perform well in field conditions where moisture and contact with organic materials are common.
Tactical Knives
Tactical knives made from Niolox steel are characterized by high durability, wear resistance, and long-lasting sharpness. This steel is ideal for knives used in harsh conditions, where reliability is crucial.
Outdoor and Survival Knives
Niolox steel is well-suited for outdoor and survival knives due to its toughness and edge stability. It is a steel that requires less frequent sharpening, which is extremely important during extended expeditions in the field.
Kitchen Knives
Kitchen knives made from Niolox steel combine the advantages of stainless and tool steels. Their high wear resistance and good anti-corrosion properties make them excellent for use in the kitchen, especially for intensive use.
How to Care for a Knife Made of Niolox Steel?
Niolox steel is corrosion-resistant, but to ensure the long life of the knife, it is important to follow a few guidelines:
- Cleaning – Thoroughly clean the knife after each use and avoid leaving it wet.
- Oiling – Regularly applying protective oil ensures additional protection against corrosion.
- Sharpening – Using diamond or ceramic stones provides the best sharpness.
Summary – Why Choose Niolox Steel?
Niolox steel is a versatile material that offers high wear resistance, good corrosion resistance, and exceptional edge stability. This makes it an ideal choice for hunting, tactical, outdoor, and kitchen knives. Its properties make it suitable for both field conditions and the kitchen.
Choosing Niolox steel guarantees durability, reliability, and excellent performance, making it one of the best materials for knives with versatile applications.

Niolox steel stands out due to the presence of niobium, which forms hard carbides, providing excellent wear resistance and edge stability.
Niolox steel achieves a hardness range of 58–62 HRC after proper heat treatment, ensuring high durability and edge retention.
Niolox steel is ideal for hunting, tactical, outdoor, and kitchen knives due to its durability, corrosion resistance, and edge stability.
Thanks to its balanced hardness, Niolox steel is relatively easy to sharpen, especially when using diamond or ceramic stones.
A knife made from Niolox steel should be regularly cleaned, dried, and oiled to maintain its excellent properties and ensure a long life.