HTS FAQ - Nitrex
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Heat treating is a controlled thermal process used to enhance the properties of materials utilized across diverse industries. It involves heating metals to specific temperatures and then carefully controlling the cooling process.

Through precise manipulation of temperature, time, and other critical process parameters, we can achieve remarkable enhancements in material characteristics, such as bolstering hardness, strength, durability, wear resistance, and corrosion resistance, thereby optimizing materials for a wide spectrum of demanding applications.

Heat treating is essential for creating materials that meet precise performance requirements in various industries, including automotive, aerospace, and machinery manufacturing.

Nitrex heat treating services are applicable to a wide range of materials, predominantly metals and alloys. The determination of the heat treatment process involves a thorough understanding of material type and characteristics, the desired outcome, the intended application, and adherence to quality standards. Tailoring the process to specific materials ensures that they exhibit improved properties, such as hardness, strength, wear resistance, and more, making them suitable for various demanding applications across different industries.

To learn more about the benefits or to enquire about your project contact us today.

At Nitrex, we offer a comprehensive range of heat treatments, including annealing, quenching, tempering, carburizing, nitriding, vacuum and more. Each of these treatments serves a distinct purpose, and our expertise allows us to tailor them precisely to your unique requirements.

For a preview of the suite of services we offer, from modern to conventional to vacuum heat treatments and more, visit our services page.

Ready to start a discussion about your project? Contact us, and let our experienced team can help determine the best heat-treating process to optimize your product for superior performance and durability.

Controlled nitriding is a surface hardening process that entails the diffusion of nitrogen into the surface of the material. This process significantly enhances wear resistance and fatigue strength while maintaining dimensional stability and the material’s core toughness.

Nitriding is particularly well-suited for applications where increased performance and durability are required. The unique combination of hardness, fatigue strength, and toughness improvements makes it a valuable choice for optimizing the efficiency and durability of critical parts.

Our team of experts is readily available to provide in-depth insights into our Nitreg® family of nitriding and nitrocarburizing processes. Feel free to contact us to discuss the advantages and customization options of nitriding for your project.

Nitrex brings over 40 years of experience in pioneering heat treating technologies, ensuring that you’re partnering with a trusted industry leader.

Our commitment to quality and reliability is reflected in our numerous certifications. We take pride in delivering products that precisely match your specifications, thanks to quality control measures implemented from the moment goods are received to the final stages of treatment and delivery. Our comprehensive suite of heat treating services is tailored to meet your specific material enhancement needs, including custom recipe development and product optimization.

Additionally, our in-house metallurgy laboratories are equipped to support in-depth material analysis and research, while our testing and analysis services ensure that your materials not only meet but exceed your desired specifications.

When you choose Nitrex, you’re not merely obtaining heat treating services; you’re gaining access to a full spectrum of expertise and capabilities that are wholly dedicated to enhancing your application’s performance and elevating product quality. We invite you to contact us today to initiate a discussion on how we can enhance your product.

The duration of the heat treating process can vary significantly depending on several factors, including the type and condition of the material, part size, lot size, batch or continuous processing, treatment type, product requirements, furnace, and technology in use. Because of these variables, providing a single standard timeframe for heat treating processes is challenging.

Typically, the duration is determined on a case-by-case basis, considering the specific material, process, and desired outcome. Our heat treating facilities can provide an estimated timeline based on the unique characteristics of your project. Feel free to contact us today to discuss your specific requirements.

Nitrex facilities are equipped with state-of-the-art furnaces and cutting-edge technologies, allowing us to manage a diverse range of sizes and quantities. Our capabilities offer remarkable flexibility, accommodating projects of varying scales, whether they are small or large, batch or continuous.

For a personalized experience, don’t hesitate to reach out to us or explore one of our regional heat treatment facilities conveniently located in Indiana | Illinois | Michigan.

The impact of heat treatment on manufacturing costs and lead times can vary based on factors like material type, treatment complexity, batch size, and quality requirements. While it’s challenging to provide a one-size-fits-all answer, heat treatment costs are influenced by the material’s specific treatment needs. More complex processes or smaller batch sizes can increase costs. Additionally, stringent quality control may add some time but ensures materials meet desired specifications.

To determine your project cost, a detailed analysis is recommended. Please contact us for personalized insights and solutions.

Absolutely! We take great pride in delivering heat-treated products of the highest quality. Our rigorous quality assurance procedure ensures that every heat treatment and processed component aligns precisely with your specifications. Understanding that each project may have unique testing and quality assurance demands, our in-house metallurgy laboratories are equipped to conduct comprehensive inspections, testing, and material analysis, guaranteeing strict compliance.

Contact us so we can discuss your project’s specific requirements. Your satisfaction and the optimal performance of your product remain at the forefront of our priorities.

Our approach to heat treating combines the strength of a global perspective with a robust local presence. Our state-of-the-art facilities in Indiana, Illinois and Michigan cater to your local heat treating needs, ensuring that you receive personalized solutions right in your backyard.

Beyond the local horizon, our global network is well-equipped to serve businesses on an international scale, bringing our expertise to you no matter where you are located. Thanks to our international network, we can seamlessly take on projects at customer locations worldwide, offering the same technical know-how and expertise that you can trust across all our locations.

Whether you’re searching for services close to home or require international support, we’ve got you covered. Contact us today, and let’s find the nearest heat treating facility that best suits your needs.

Commercial heat treating companies are experts in a diverse range of industrial processes designed to alter the physical and mechanical properties of various metals and alloys. The primary goal is to enhance the performance characteristics of these materials by offering a suite of heat treatments tailored to meet the needs of a wide range of applications.

  1. Annealing: Annealing is a heat treatment process that involves heating a material to a specific temperature and then slowly cooling it to make it more ductile and reduce its hardness. This process is often used to relieve internal stresses and improve workability.
  2. Hardening: Hardening is a process that involves heating a material to a critical temperature and then rapidly cooling it, often through quenching, to increase its hardness. This is crucial for materials used in tools, machine parts, and various wear-resistant applications.
  3. Tempering: After hardening, materials may be tempered to reduce brittleness and improve toughness. Tempering involves reheating the material to a lower temperature to achieve the desired balance between hardness and toughness.
  4. Carburizing: Carburizing is a case-hardening process that introduces carbon into the surface of a material. It enhances wear resistance, making it suitable for gears, cams, and other high-wear components.
  5. Nitriding: Nitriding is a surface-hardening process that introduces nitrogen into the material’s surface, improving wear and corrosion resistance while maintaining core toughness. It’s often used for critical components.
  6. Austempering and Martempering: These processes involve quenching materials in a specific manner to achieve a combination of strength and ductility, making them ideal for components that require high impact resistance.
  7. Stress Relieving: Stress relieving is a heat treatment process used to reduce internal stresses in materials, improving dimensional stability and preventing distortion.
  8. Normalizing: Normalizing is a process similar to annealing but involves cooling in air. It refines the grain structure and improves mechanical properties.
  9. Solution Heat Treatment: Commonly used for aluminum and some other alloys, this process dissolves solid solution phases and precipitates out fine particles to improve mechanical properties.
  10. Age Hardening: Age hardening, also known as precipitation hardening, is a heat treatment process used to enhance the strength of certain alloys by allowing controlled precipitates to form.
  11. Other Treatments: Many heat treating companies offer specialized services like glass beading, shot blasting, sand blasting, straightening, and cryogenic treatment. These processes can be used both pre-heat treatment and post-treatment to optimize materials for superior performance and durability, meeting unique project demands.


Heat treatment plays a pivotal role in enhancing the mechanical properties, durability, and overall performance of materials, making them suitable for a wide range of applications across various industries, including aerospace, automotive, manufacturing, and more. Commercial heat treating companies combine expertise, precision, and state-of-the-art equipment and technologies to ensure that materials not only meet but frequently exceed the desired specifications. This partnership is dedicated to maximizing your product’s capabilities and performance, no matter how demanding the application.