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Nitriding Product List and Ranking from 31 Manufacturers, Suppliers and Companies

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

Nitriding Manufacturer, Suppliers and Company Rankings

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

  1. 極東窒化研究所 Kanagawa//Manufacturing and processing contract
  2. 旭千代田工業 技術本部 Aichi//Ferrous/Non-ferrous metals
  3. HEF DURFERRIT JAPAN Kanagawa//Manufacturing and processing contract
  4. 4 小山鋼材 Osaka//Trading company/Wholesale
  5. 5 ミリオン化学 Osaka//Chemical
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Nitriding Product ranking

Last Updated： Aggregation Period:Sep 17, 2025～Oct 14, 2025
This ranking is based on the number of page views on our site.

  1. The difference between gas nitriding treatment and gas soft nitriding treatment. 極東窒化研究所
  2. Salt bath soft nitriding treatment "Isonite TF treatment" 旭千代田工業 技術本部
  3. Various Mold-Compatible Surface Treatment "KOSUMO-Process" 小山鋼材
  4. 4 Salt bath soft nitriding + oxidation treatment "Isonite SQP/QPQ treatment" 旭千代田工業 技術本部
  5. 5 Nitriding treatment ≪Tuftride, QPQ≫ HEF DURFERRIT JAPAN

Nitriding Product List

31～45 item / All 73 items

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Salt bath soft nitriding + oxidation treatment "Isonite SQP/QPQ treatment"

Salt bath soft nitriding + oxidation treatment "Isonite SQP/QPQ treatment"

Improvement of heat resistance, corrosion resistance, and sliding properties! Composite treatment applying ferric oxide to the isonite surface.

"Isonite SQP/QPQ treatment" is a composite treatment of TF processing, specifically designed to enhance corrosion resistance. By immersing the material in an AB bath immediately after TF processing, an oxide film is formed directly above the compound layer, allowing for higher corrosion resistance, improved surface roughness, and reduced bending and distortion without compromising the characteristics of Isonite TF treatment. Additionally, in terms of corrosion resistance, it has capabilities exceeding those of hard chrome plating, and this treatment alone can satisfy both surface hardening and rust prevention effects. [Characteristics] ■ Isonite SQ - By applying surface polishing after Isonite SQ treatment, a glossy black appearance and good surface properties can be achieved. ■ Isonite QPQ - By immersing again in the AB bath after Isonite SQP treatment, a dense oxide film is formed on the surface, enhancing corrosion resistance. - The glossy black appearance is excellent, increasing product value, and it can also be used for decorative products. *For more details, please download the PDF or feel free to contact us.

  • Surface treatment contract service

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Comprehensive Catalog: Surface Hardness Technology

Comprehensive Catalog: Surface Hardness Technology

Introducing a variety of surface modification technologies that play a crucial role in enhancing functionality and quality across various industries!

This catalog features the surface hardening technology of Asahi Chiyoda Industries Co., Ltd., a comprehensive surface modification treatment manufacturer that boasts a top-class share in soft nitriding treatment. We provide appropriate surface modification technologies that can promptly respond to customer needs, including the "Isonite TF treatment," an effective surface treatment for all iron-based metals conducted in a salt bath, the "Vacuum Carburizing Quenching" using propane gas in a vacuum, and the "AC Coat," a thin film solid lubrication coating that demonstrates excellent friction performance even under unlubricated conditions due to its extremely high lubrication performance. [Contents] - Isonite TF treatment - Isonite SQP/QPQ treatment - Isonite LS treatment - Gas soft nitriding - AC Coat, etc. *For more details, please download the PDF or feel free to contact us.

  • Surface treatment contract service

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Nitriding Treatment J-Nit (Radical Nitriding Method)

Nitriding Treatment J-Nit (Radical Nitriding Method)

Nitriding Treatment J-Nit (Radical Nitriding)

<Overview> "J-Night" is a new nitriding treatment utilizing plasma, developed based on the theory of plasma nitriding reactions to improve the issues associated with conventional nitriding methods. This nitriding method is suitable for the treatment of high-speed tool steel and alloy tool steel. Its features are outlined below. ★ Six Points of J-Night ★ 1. It hardly changes the surface condition. 2. It can form only a diffusion layer without creating a compound layer. 3. It can minimize dimensional changes significantly. 4. Due to these features, post-processing after treatment is unnecessary. 5. It is a nitriding treatment conducted at temperatures below 500°C. 6. A hard coating can be directly formed on the treated surface using methods such as PVD. These features enhance the wear resistance of molds and machine parts, extend their lifespan, and improve productivity. ★ Benefits of J-Night Treatment ★ - No reduction in hardness or distortion - No polishing required after treatment - No peeling - Composite treatment is possible - Uniform nitriding depth *For more details, please refer to the catalog or contact us. ★ We also accept inquiries for sample coatings ★

  • Surface treatment contract service

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"Gas Soft Nitriding Treatment by the Unizoff Method" *Heat Treatment Case Studies Now Available!*

"Gas Soft Nitriding Treatment by the Unizoff Method" *Heat Treatment Case Studies Now Available!*

Improved corrosion resistance and wear resistance! "Gas soft nitriding treatment" using the Unisof method.

Gas soft nitriding treatment is a heat treatment process that maintains a temperature range of 550 to 600°C in a mixed atmosphere of carburizing gas and NH3 (ammonia), allowing nitrogen and carbon to diffuse into the surface to form carbonitrides and achieve surface hardening. The Unizoff method generates this mixed atmosphere through the thermal decomposition gas of urea, creating a consistently stable environment. Compared to salt bath heat treatment, it does not use cyanide salts, making it an environmentally friendly heat treatment method that contributes to pollution prevention. Various set methods can be chosen according to the product, such as direct placement on fixtures, hanging, or alignment. Additionally, gas soft nitriding treatment using ammonia gas is also available upon request. 【Features】 - Strong improvement in wear resistance and corrosion resistance - Effective for products with strict dimensional accuracy while minimizing distortion - Adopts retort outer cooling method to reduce load on products - Minimal nitriding unevenness, resulting in a beautiful (silver-gray) finish - Capable of handling sizes up to Φ600mm × 1000mm

  • Other surface treatment equipment

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Product Performance

Product Performance

Introduction to Meinet's Strengths and Product Achievements

We introduce Meinetz's products, which handle liquid carburizing, quenching, tempering, vacuum heat treatment, gas nitriding, various coatings, shot blasting, and more. On this page, we showcase our product achievements made through gas nitriding, salt bath heat treatment, solution heat treatment, and stress relief annealing, along with photos categorized by industry, material, delivery time, and type of heat treatment. For heat treatment processing and deep drawing press processing, we also accommodate sizes not listed, so please feel free to contact us. 【Published Achievements】 ■ Gas Nitriding - Product Name: Tap Base - Industry: Electrical Equipment Related - Material: SPCC - Delivery Time: 3-4 days - Heat Treatment: Gas Nitriding - Other: Zinc Plating

  • Processing Contract

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Collection of examples of heat treatment processes such as gas nitriding and salt bath heat treatment *Free distribution

Collection of examples of heat treatment processes such as gas nitriding and salt bath heat treatment *Free distribution

A collection of 14 case studies on heat treatment processes, including gas nitriding and salt bath heat treatment. It includes types of heat treatment and the objects/industries involved! *Currently available as a free gift.

The "Case Studies of Heat Treatment" is a collection that includes 14 types of heat treatment methods and target objects, such as gas nitriding treatment and salt bath heat treatment, as well as the relevant industries. [Contents] ■ Gas Nitriding Treatment ■ Salt Bath Heat Treatment ■ Solid Bath Heat Treatment ■ Stress Relief Annealing ■ Range of Possible Heat Treatment Processes ■ Range of Possible Deep Drawing Press Processing *Please view the PDF of the heat treatment case studies available for download.

  • Other surface treatment equipment

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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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Surface hardening method of salt bath soft nitriding "Isonite treatment" [Greatly improves heat resistance]

Surface hardening method of salt bath soft nitriding "Isonite treatment" [Greatly improves heat resistance]

Achieving heat resistance of over 500℃! "Isonite treatment" enables the rationalization and cost reduction of aluminum extrusion molds and die-cast mold components.

"Isonite treatment (low-temperature salt bath nitriding)" is a surface hardening method that forms a nitrided layer on metal surfaces. It significantly improves the fatigue strength of steel, cast iron, and sintered metals. The formation of the nitrided layer exhibits high heat and wear resistance even at temperatures ranging from 300 to 600°C, and aluminum extrusion molds and die-cast mold components treated with Isonite do not soften even when heated to 500°C. The improvements in heat resistance, wear resistance, and resistance to thermal cracking associated with Isonite treatment greatly contribute to rationalization and cost reduction. 【Features】 ■ Improved heat resistance and wear resistance ■ Increased fatigue strength ■ Enhanced resistance to thermal cracking ■ Improved corrosion resistance ■ Significant contribution to rationalization and cost reduction *For more details, please download the catalog or contact us.

  • Surface treatment contract service
  • Cleaning agents
  • Rust Inhibitor

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Kyokuto Nitriding Laboratory Co., Ltd. Business Introduction

Kyokuto Nitriding Laboratory Co., Ltd. Business Introduction

We also support nitriding treatment for large parts from mass-produced components.

Kyokuto Nitriding Research Institute Co., Ltd. has specialized in "nitriding treatment" for over 50 years, conducting metal surface hardening and heat treatment for machine parts, aircraft components, and more. Leveraging our unique perspective as a precision machinery manufacturer and the know-how cultivated through rigorous manufacturing processes, we are engaged in research and development of technologies and systems that only we can provide. We aim to contribute widely to society as a company that sincerely tackles any challenges in all fields of machine parts, which are becoming increasingly complex and demanding high precision. 【Business Activities】 ○ Gas nitriding treatment (ordinary nitriding, SP treatment, UN treatment) 　SP: SP treatment (special nitriding treatment for stainless steel) 　UN: Ulnite (long-time treatment to thicken the nitrided layer) ○ Gas soft nitriding treatment (nitrogen-based) ○ Stress relief annealing treatment ○ Oxidation-free annealing treatment For more details, please contact us or download our catalog.

  • Surface treatment contract service
  • Processing Contract

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Technical book distribution now! Technical book "What is Nitride?"

Technical book distribution now! Technical book "What is Nitride?"

What is nitriding treatment? A technical book explaining the characteristics of nitriding and gas nitriding treatments, including the relationship between processing time, processing temperature, and hardness.

Nitriding treatment is a chemical surface hardening method of surface hardening heat treatment, which combines with various metal elements to form hard nitrides that harden the surface. The purpose of nitriding treatment is to improve wear resistance, fatigue resistance, corrosion resistance, and heat resistance. The most popular special steel that is easy to nitridize is SACM645 (commonly known as nitriding steel), which contains Al, Cr, and Mo. Other suitable materials for nitriding include chromium-molybdenum steel, nickel-chromium-molybdenum steel, and stainless steel. [Contents] - What is gas nitriding? - History of nitriding - Characteristics of nitriding treatment and gas nitriding treatment as surface hardening processes - About nitriding steel - Relationship between treatment time, treatment temperature, and hardness For more details, please contact us or download the catalog.

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  • 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
  • Processing Contract

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The relationship between nitriding treatment time, treatment temperature, and hardness.

The relationship between nitriding treatment time, treatment temperature, and hardness.

Introducing the relationship between treatment time/temperature and surface hardness distribution in nitriding treatment.

In the "nitriding treatment" that strengthens the surface of steel, the hardness distribution changes depending on the treatment time and temperature. As the temperature increases, the surface hardness decreases. Additionally, as the treatment time increases, the nitrided layer becomes thicker, generally accompanied by a thicker brittle compound layer. [Features] ■ Hardness distribution changes with treatment temperature and time ■ Surface hardness decreases as temperature increases ■ Nitrided layer becomes thicker with longer time, but hardness does not change much *For more details, please refer to the PDF document or feel free to contact us.

  • Surface treatment contract service
  • Special Steel

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Nitrogen treatment of stainless steel is also effective as an alternative to plating processing.

Nitrogen treatment of stainless steel is also effective as an alternative to plating processing.

As an alternative to plating treatment, it is also effective in preventing peeling.

We would like to introduce the "nitriding treatment for stainless steel" conducted at the Far East Nitriding Research Institute, which specializes in nitriding treatment primarily in the Kanto and Tokai areas. Stainless steel is a type of steel that excels in corrosion resistance. During the nitriding process, the entry of nitrogen is hindered by the passive film of chromium oxide on the surface, necessitating an activation treatment. To achieve a stable treatment layer, our company employs a combination of physical removal methods such as shot blasting and chemical removal methods. 【Chemical Removal Methods】 ■ Gas Nitriding Treatment - Does not require ensuring glow discharge - No need for shape, loading amount, or size classification - Provides a stable treatment layer ■ SP Treatment - Has a hardened layer of HV1000 or higher - Processed at lower temperatures than nitriding treatment, resulting in less deformation - Does not reduce corrosion resistance *For more details, please download the PDF or feel free to contact us.

  • Surface treatment contract service
  • Special Steel

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The difference between gas nitriding treatment and gas soft nitriding treatment.

The difference between gas nitriding treatment and gas soft nitriding treatment.

Introduction to the differences between gas nitriding treatment and gas soft nitriding treatment.

I will introduce the differences between "gas nitriding treatment" and "gas soft nitriding treatment." "Gas nitriding method" is a technique that achieves a high-hardness diffusion layer on the surface of steel through the diffusion of active nitrogen. It is performed on parts that require higher strength and precision, and is often used for high-grade materials such as nitrided steel and die steel. On the other hand, "gas soft nitriding method" was developed as an alternative technology to salt bath nitriding during the time when environmental issues arose from salt bath nitriding. It is used for treating lower-grade materials primarily made of carbon steel. [About gas nitriding] - Material: High-grade steel (SACM, SKH, SKD, SCM, SUP) - Desired structure: Diffusion layer (compounds of Al, Cr, and N) - Depth of hardened layer: Deep (0.1 to 1.0 mm) - Surface hardness: High (HV 700 to 1300) - Treatment time: Long (25 to 200 hours) *For more details, please refer to the PDF document or feel free to contact us.

  • Surface treatment contract service
  • Special Steel

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Nitride Treatment Q&A Collection

Nitride Treatment Q&A Collection

Surface hardening treatment to harden the surface of steel! Various Q&A regarding nitriding technology are published.

The "Nitriding Treatment Q&A Collection" introduces nitriding treatment technology, which is one of the surface effect methods for steel through heat treatment, demonstrating effectiveness in improving wear resistance, fatigue resistance, corrosion resistance, and heat resistance. From basic explanations of the treatment process and characteristics to various questions such as "Nitrided steel is a special steel, but what is special steel?" "Can cast iron be nitrided?" "What are the advantages and disadvantages of gas nitriding?" we provide answers. [Contents] ■ What is nitriding treatment ■ Surface hardness and depth of hardness layer ■ Origin of nitriding technology ■ Nitriding treatment process ■ Characteristics of gas nitriding treatment ■ Nitriding treatment Q&A *For more details, please refer to the PDF document or feel free to contact us.

  • Surface treatment contract service
  • Special Steel

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