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Nitriding Product List and Ranking from 8 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Jul 16, 2025～Aug 12, 2025
This ranking is based on the number of page views on our site.

Nitriding Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Jul 16, 2025～Aug 12, 2025
This ranking is based on the number of page views on our site.

  1. 伸和熱処理 Saitama//Manufacturing and processing contract
  2. null/null
  3. 旭千代田工業 Aichi//Ferrous/Non-ferrous metals 技術本部
  4. 4 オーネックス Kanagawa//Other manufacturing
  5. 5 朝日熱処理工業 Osaka//Manufacturing and processing contract
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Nitriding Product ranking

Last Updated： Aggregation Period:Jul 16, 2025～Aug 12, 2025
This ranking is based on the number of page views on our site.

  1. Soft nitriding treatment (Tuftride) 伸和熱処理
  2. Nitriding treatment ≪Tuftride, QPQ≫
  3. Salt bath soft nitriding treatment "Isonite TF treatment" 旭千代田工業 技術本部
  4. 4 Gas Soft Nitriding Treatment "SOFT-NITE" オーネックス
  5. 5 Surface modification nitriding treatment "Sem Plasma Nitriding"

Nitriding Product List

1～15 item / All 18 items

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Gas Soft Nitriding Treatment "SOFT-NITE"

Gas Soft Nitriding Treatment "SOFT-NITE"

Wear-resistant! Eco-friendly surface heat treatment.

"SOFT-NITE" is an environmentally friendly surface heat treatment that replaces the salt bath nitriding process (Tufftride method). Since it is a dry method that does not use cyanide salts such as KCN or NaCN, there are no pollution issues from wastewater, making it a very stable process. In particular, the surface condition and cleanliness are extremely good, contributing to cost-effectiveness. 【Features】 ■ High surface hardness and excellent wear resistance ■ Presence of compressive residual stress on the surface increases fatigue strength ■ High corrosion resistance due to the properties of the compounds ■ Treatment temperature is in the ferrite region, resulting in minimal deformation ■ Improved anti-seizing properties due to the presence of a porous layer on the surface *For more details, please refer to the catalog or feel free to contact us.

  • Other factory equipment and parts

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Salt bath soft nitriding treatment "Isonite TF treatment"

Salt bath soft nitriding treatment "Isonite TF treatment"

Effective for all metal products! Improved wear resistance, seizure resistance, fatigue strength, and corrosion resistance.

"Isonite TF treatment" is a soft nitriding process conducted in a salt bath, which is an effective surface treatment for all iron-based metals. Since the treatment is performed at a relatively low temperature of 580°C, which is far below the quenching temperature of steel, it is very advantageous in terms of deformation and dimensional changes. The nitrogen and carbon elements generated by the reactions in the salt bath penetrate and diffuse into the workpiece, forming a compound layer (iron nitride) on the very surface, with a diffusion layer just beneath it. The diffusion layer significantly improves fatigue strength, with improvements of more than twice observed, especially in carbon steel. [Characteristics] ■ Tough wear resistance ■ Anti-galling and anti-seizing properties ■ Improved fatigue strength ■ Enhanced heat resistance ■ Improved corrosion resistance, etc. *For more details, please download the PDF or feel free to contact us.

  • Surface treatment contract service

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Kn Control Nitriding Treatment (Nitrex)

Kn Control Nitriding Treatment (Nitrex)

Nitrogen treatment tailored to your needs, controlled by nitrogen potential (Kn)! *Large products up to Φ1000×H1400 can be processed.

Our company is the only contract processing manufacturer in Japan that has a licensing agreement with NITREX. The state-of-the-art nitriding treatment can control the Kn (nitriding potential) to change the nitriding composition. In particular, by using the Le Chatelier diagram (equilibrium phase diagram), we can control the diffusing nitrogen concentration to easily produce: - Nitrided structure with only a diffusion layer without a compound layer - Adjustment of nitrogen concentration in the diffusion layer - Generation of a dense compound layer (with minimal porosity) For more details, please contact us or download the PDF.

  • Surface treatment contract service

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Plasma nitriding treatment (ion nitriding treatment)

Plasma nitriding treatment (ion nitriding treatment)

This is an introduction to environmentally focused nitriding treatment using plasma energy in a vacuum.

At Asahi Heat Treatment Industry Co., Ltd., we conduct environmentally conscious nitriding treatment using plasma energy in a vacuum. When a direct current voltage is applied between the furnace wall and the workpiece in the vacuum furnace, glow discharge occurs. Hydrogen and gas are used as reaction gases to initiate the glow discharge. When nitrogen gas is introduced as the nitriding reaction gas into the excited plasma, nitrogen atoms are similarly excited and converted into N+ ions. These N+ ions are charged on the surface of the workpiece, allowing activated nitrogen elements to diffuse and harden the surface. Typically, the treatment is performed under a vacuum pressure of 1 to 10 torr at temperatures ranging from 400°C to 570°C. 【Features】 ■ The heat source used for treatment is plasma, which is energy-efficient. ■ Gas concentration can be easily adjusted, allowing for the tuning of nitriding characteristics. ■ By using carburizing gas, carburizing can be performed alongside nitriding. ■ Nitriding treatment can be conducted at low temperatures below 500°C, resulting in minimal dimensional changes and distortion. ■ Masking (nitriding prevention) can be easily achieved with jigs, allowing for partial nitriding. ■ The process is pollution-free and uses very few gases that contribute to global warming. *For more details, please refer to the PDF document or feel free to contact us.

  • Plasma surface treatment equipment
  • Surface treatment contract service
  • Other surface treatment equipment

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Soft nitriding treatment for stainless steel (PSN treatment)

Soft nitriding treatment for stainless steel (PSN treatment)

No vacuum treatment or removal of passive films by halides is necessary. Soft nitriding treatment for stainless steel.

When performing soft nitriding treatment on stainless steel, the nitriding is inhibited by the passive chromium oxide film on the surface. Therefore, it is usually necessary to create a vacuum to remove the passive film or to remove the passive film using halides before proceeding with nitriding. However, with our precision low-temperature nitriding treatment (PSN treatment), we create an atmosphere that reduces the passive film during thermal decomposition and use a powder material that generates gas for soft nitriding, making it possible to achieve soft nitriding of stainless steel. If you are considering soft nitriding treatment for stainless steel, please feel free to contact us. 【Other Features】 ■ Low-temperature treatment (400℃ to 530℃) minimizes dimensional changes and deformation. ■ Subsequent processes such as shot peening and PVD treatment are possible, allowing for synergistic effects through composite treatments. ■ Improvement of mechanical properties, mainly enhancing wear resistance, fatigue strength, and heat resistance. ■ Improved release properties in resin molds. *For more details, please refer to the PDF materials or feel free to contact us.

  • Other metal materials
  • Other surface treatment equipment
  • Surface treatment contract service

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Soft nitriding treatment (Tuftride)

Soft nitriding treatment (Tuftride)

Processing is possible for various types of steel! It is a treatment that results in extremely little deformation compared to carburizing and conventional quenching.

Our company offers "soft nitriding treatment (Tufftriding)." This process is conducted at a lower temperature (generally between 550 and 580°C) than the transformation point temperature (the austenite transformation temperature during quenching), resulting in extremely minimal deformation compared to carburizing or conventional quenching. Unlike the phenomenon of hardening through quenching, this treatment hardens by diffusing nitrogen into the surface and forming a layer of iron nitride compounds on the surface. (This differs from the form of hardening that utilizes the transformation of steel as in quenching.) Soft nitriding aims to improve fatigue strength, wear resistance, and corrosion resistance. The finish appears gray to light gray (the color of the nitrided layer). The treatment methods include salt bath nitriding, gas nitriding, and plasma nitriding. 【Features】 ■ Soft nitriding treatment can be applied to most materials (various steel types including carbon steel, cold-rolled steel, structural steel, stainless steel, cast iron, etc.) ■ Due to salt bath nitriding, it is easy to apply to small quantities of diverse products. ■ We can also handle polishing treatment after Tufftriding in-house. ■ We can accommodate small precision parts and diverse small-batch processing with short lead times. *For more details, please refer to the external link or feel free to contact us.

  • Other surface treatment equipment

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SOFT-NITE Gas Soft Nitriding Treatment

SOFT-NITE Gas Soft Nitriding Treatment

A surface hardening method that reduces costs and is resistant to wear! There are no pollution issues from wastewater since it does not use cyanide salts.

Gas soft nitriding treatment is one of the soft nitriding methods developed to solve the quality issues associated with traditional salt bath nitriding and to reduce environmental impact while achieving equal or superior quality characteristics. Generally, at a treatment temperature of around 570°C, a mixed gas primarily composed of ammonia gas is added to form a compound layer of carbides and nitrides on the surface of the processed material, generating a diffusion layer beneath it. This nitrided layer significantly improves the mechanical properties of steel components, such as wear resistance, corrosion resistance, and fatigue resistance. Gas soft nitriding treatment is an environmentally friendly method that allows for the acquisition of effective quality characteristics in a short time, making it a processing method that considers environmental aspects and responds to the lightweight and miniaturization of components due to the spread of electric vehicles. It is a surface hardening method that will increasingly be applied in a wide range of markets. For more details, please contact us or refer to the catalog.

  • Surface treatment contract service

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Hatta Industries Ion Nitriding Treatment

Hatta Industries Ion Nitriding Treatment

Low-temperature treatment with minimal distortion, no post-processing required.

Using a vacuum furnace to heat and cool metals imparts hardness, toughness, and corrosion resistance. Compared to conventional processing systems, it is clean and safe. It is the best heat treatment method for metal products such as stainless steel and titanium, preventing oxidation without causing unnecessary chemical changes. Ion nitriding is a treatment method that hardens the surface of metals using low-temperature nitrogen ions. It results in minimal distortion, and the process is completed in a short time while maintaining the surface condition of the metal, eliminating the need for additional processing. It also allows for easy composition and control of the nitrided layer, which cannot be achieved with other nitriding methods.

  • Processing Contract
  • Surface treatment contract service

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Characteristics of nitriding treatment and gas nitriding treatment as surface hardening processes.

Characteristics of nitriding treatment and gas nitriding treatment as surface hardening processes.

Surface hardening methods in heat treatment. A detailed introduction to the characteristics of each surface hardening treatment method.

Nitriding treatment is classified as one of the surface hardening methods in heat treatment. It is a process in which nitrogen diffused from the surface of steel combines with various metallic elements to form hard nitrides, thereby hardening the surface of the steel. The purpose of nitriding treatment is to improve wear resistance, fatigue resistance, corrosion resistance, and heat resistance. Here, we introduce the characteristics of nitriding treatment and gas nitriding as surface hardening treatments. 【Characteristics of Each Surface Hardening Method (Excerpt)】 ■ Nitriding Depth of hardened layer: ○ / Hardness: ○ / Fatigue resistance: ○ / Deformability: ○ / Wear resistance: ◎ / Spalling resistance: ◎ / Heat resistance: ○ / Corrosion resistance: ○ ■ Carburizing Depth of hardened layer: ◎ / Hardness: ○ / Fatigue resistance: ○ / Deformability: △ / Wear resistance: ○ / Spalling resistance: ○ / Heat resistance: △ / Corrosion resistance: △ ■ Siliconizing Depth of hardened layer: ○ / Hardness: ○ / Fatigue resistance: △ / Deformability: △ / Wear resistance: ○ / Spalling resistance: ○ / Heat resistance: ◎ / Corrosion resistance: ◎ ■ Flame Hardening Depth of hardened layer: △ / Hardness: △ / Fatigue resistance: △ / Deformability: △ / Wear resistance: ○ / Spalling resistance: ○ / Heat resistance: △ / Corrosion resistance: △ *For more details, please download the PDF or feel free to contact us.

  • Surface treatment contract service
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Gas Soft Nitriding Treatment (SN Process)

Gas Soft Nitriding Treatment (SN Process)

For improving the wear resistance, fatigue strength, and sliding performance of steel materials, gas soft nitriding treatment is recommended.

This is an introduction to the gas soft nitriding treatment (SN process) conducted by our company. When gas soft nitriding is performed, a compound layer (ε layer) of about 5μm to 20μm is formed on the metal surface. This compound layer consists of a layer made of nitrides and carbides, and the gas soft nitriding treatment is conducted in an atmosphere that contains not only nitrogen atoms but also carbon atoms. Furthermore, inside this compound layer, a layer of nitrides called the diffusion layer is formed, and these compound and diffusion layers enhance the wear resistance, fatigue strength, and sliding performance of steel material components. For this reason, it can be said that this is a widely used surface heat treatment for automotive parts, electronic components, general industrial equipment, molds, and more. 【Features】 ■ Shapes that are unsuitable for salt bath nitriding or plasma nitriding, such as deep holes and slits, can be easily treated. ■ The surface has a clean, milky white finish without the adhesion of impurities or oxide films. ■ Easily applicable from small lots to mass production, for both small and large parts. ■ Improvement of mechanical properties: enhanced wear resistance (effect of high hardness and low friction coefficient of the compound layer). *For more details, please refer to the PDF document or feel free to contact us.

  • Other Auto Parts
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  • Surface treatment contract service

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Precision low-temperature nitriding treatment (PSN treatment)

Precision low-temperature nitriding treatment (PSN treatment)

Introduction of precision low-temperature nitriding treatment targeting stainless steel precision parts and precision molds developed by our company.

The precision low-temperature nitriding treatment (PSN treatment) is a precision low-temperature nitriding process developed by our company, targeting stainless steel precision parts and precision molds. It is a groundbreaking treatment method that uses specially formulated plastic raw materials as a nitriding source. This method allows for effective utilization of raw materials and has minimal environmental impact. Currently, we are researching and developing a method to harden austenitic stainless steel without compromising its corrosion resistance, which is a global theme. 【Features】 ■ Easy nitriding treatment of stainless steel ■ Low-temperature treatment (400°C to 530°C) minimizes dimensional changes and deformation ■ Composite treatments can be easily performed, allowing for subsequent processes such as shot peening and PVD treatment, enabling improvements through synergistic effects ■ Improvement of mechanical properties - Enhanced wear resistance, fatigue strength, and heat resistance ■ Improved release properties in resin molds *For more details, please refer to the PDF document or feel free to contact us.

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Precision nitriding treatment (PSN treatment) for small items and thin items such as precision molds.

Precision nitriding treatment (PSN treatment) for small items and thin items such as precision molds.

For small and thin items that do not become brittle, please try Asahi Heat Treatment's precision low-temperature nitriding process (PSN treatment).

Soft nitriding treatment can easily form a nitrided layer of approximately several hundred microns to 1 millimeter, combining the surface compound layer and the internal diffusion layer, within a processing time of a few hours. Therefore, when processing small or thin items of the above sizes, not only the surface but the entire product becomes nitrided, which can lead to brittleness. Our precision low-temperature nitriding treatment (PSN treatment) allows for easy control of nitrogen diffusion by performing the treatment at low temperatures. This enables soft nitriding treatment that retains the toughness of small and thin items. If you wish to achieve soft nitriding while maintaining toughness even for small or thin items, please consider our precision low-temperature nitriding treatment (PSN treatment). 【Other Features】 - Low-temperature treatment (400°C to 530°C) minimizes dimensional changes and deformation. - Subsequent processes such as shot peening and PVD treatment are possible, allowing for synergistic effects through composite treatments. - Improvement of mechanical properties, mainly enhancing wear resistance, fatigue strength, and heat resistance. - Improved release properties in resin molds. *For more details, please refer to the PDF document or feel free to contact us.

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