Share:
More Articles
Best Practices When Using Duplex Stainless Steels
Gain deeper insight into duplex stainless steel and master best practices in metallurgy for peak performance in demanding applications.
Things to Know About PREN
Highlighting the importance of factors beyond PREN, like manufacturing processes and heat treatment, is essential for predicting corrosion resistance accurately in various environments.
Coming to Tampa!
We are pleased to announce the grand opening of our new bar processing facility dedicated to stainless bar processing.
2024 Trade Shows
Come talk to a Rolled Alloys representative in person about your project. You can find us at these trade shows.
Best Practices When Using Specialty Materials for SWRO Feed and Brine Reject Lines
In our webinar, we’ll explore the fascinating journey of stainless steels in SWRO (Seawater Reverse Osmosis) applications.
Los Angeles Operations Tour
Welcome to Rolled Alloys, Los Angeles, where our General Manager, Carol Plana, with nearly two decades of experience, leads an operations tour. Our primary focus is on serving aerospace and space exploration customers, offering a unique inventory of titanium in various forms, and specializing in customizing materials to meet specific customer requirements.
Dual Certification
The term “dual certification” is primarily employed when certifying a material as meeting the specifications for two separate alloys.
Determining Condition of Age-Hardenable Alloys
There is a lot of confusion about the condition that age-hardenable materials, such as 17-4 or 718 are in. Are they annealed, solution annealed, or aged; and how can you tell?
Age-hardenable materials are heat treated to a particular sequence:
Understanding High-Temperature Distortion of Metals
When metals are subjected to high temperatures, they undergo expansion. The extent of expansion is measured in terms of the coefficient of thermal expansion. This physical property is frequently cited for various engineering materials.
Introduction to Heat Resistant Alloys
We have been supporting the heat-resistant alloy market for over 70 years. Many different industries, such as thermal processing, chemical processing, and power generation, depend on the capabilities of these alloys to perform day-to-day activities.
Sheet and Plate Flatness
We would prefer it if all plates and sheets were “flat”. Unfortunately, the reality is quite different, and the standard commercial specifications for producing these products recognize this reality. The requirements for the flatness of plate and sheet products sold by Rolled Alloys vary considerably by the type of product, alloy, thickness, and size of the piece.
Pipe Sizes and Tolerances
Steel pipe sizes are based on historical dimensions, called Nominal Pipe Sizes (NPS), which standardize the nominal outside diameter (OD). Additionally, a series of standard wall thicknesses known as Schedules (SCH) was also developed years ago. The units for both NPS and SCH are dimensionless.
Machining Stainless Steel and Nickel Alloys
In most circumstances, machining stainless steel and nickel alloys is more difficult than machining low-alloy steels. However, there are a wide range of compositions, and some grades can have better machinability than mild steel.
Ferrite Content in Austenitic Stainless Steels
The basic 300 series stainless steels like 304/304L and 316/316L have an austenitic microstructure and are non-magnetic. In the annealed condition, they are essentially free of ferrite, which is magnetic…
Material Test Reports
Understanding material test reports (MTRs) can be challenging for those who seldom need to interpret them. There is no standard format for reporting the required information on an MTR, which leads to mills generating MTRs with varying formats.
Quote, Buy, Track!
We make it easy to get instant pricing and purchase your metal at the click of a button. Track your order progress, get notified when it ships, and follow your shipment online until it’s delivered. It’s that easy!
Presentation Slides
An Introduction to Heat Treat Alloys
Exploring the World of High-Temperature Alloys
Welcome to Rolled Alloys’ Webinar Series
Hello and welcome to Rolled Alloys’ second webinar in our ongoing series. In today’s session, we’re delving into the fascinating world of heat-resistant alloys. Whether you’re a materials enthusiast or someone seeking specific solutions for high-temperature applications, we’ve got you covered.
In this blog post, we will cover key takeaways from the webinar, explore the fundamental aspects of heat-resistant alloys, and discuss their applications. We will also touch upon some important considerations when choosing the right materials for your specific needs.
Rolled Alloys: Your Trusted Global Supplier
Before we dive into the world of heat-resistant alloys, it’s essential to know who we are. Rolled Alloys is a global supplier specializing in high-performance alloys. Our offering includes state-of-the-art material processing, an exceptional e-commerce platform, and a team of metallurgical experts to assist you. We provide a wide range of alloys, including nickel alloys, stainless steels, duplex, titanium, cobalt, and various forms such as plates, sheets, and bars.
Meet the Expert: Hugh Thompson
Our speaker for today is Hugh, an Application Engineer with Rolled Alloys. With a Bachelor of Science in Mechanical Engineering from the University of Toledo School of Engineering, Hugh has been a valuable member of our team since 2019. His responsibilities include conducting failure analyses, addressing technical inquiries, and assisting customers in material selection for specific applications and processes. He’s also actively involved with organizations like ASME, MTI, and the Association for Materials Protection and Performance.
What Are Heat-Resistant Alloys?
Heat-resistant alloys are a special group of materials designed for high-temperature environments. These alloys contain a minimum of 12% chromium to form a protective chromium oxide layer at high temperatures. Additional elements such as carbon, nitrogen, nickel, silicon, and aluminum enhance their properties. Rare earth metals are also incorporated to improve oxide adherence.
Some common heat-resistant alloys include,
Factors to Consider When Selecting Heat-Resistant Alloys
- Oxidation Resistance: Heat-resistant alloys with at least 12% chromium can form an oxide layer that protects them at high temperatures. Beyond the oxidation threshold, they become porous and brittle.
- Creep Strength: Creep is time-dependent deformation at elevated temperatures and constant stress. High creep strength alloys retain their shape, making them ideal for high-temperature applications.
- Carburizing and Nitriding: These processes introduce carbon and nitrogen into the material’s surface, enhancing wear resistance. Alloys with high nickel content are better suited for these environments.
- Vacuum Processing: The process environment should be void of oxygen. Therefore, high temperature oxidation does not tend to be a concern.
Common Applications of Heat-Resistant Alloys
- Thermal Processing: Used for bar baskets, serpentine grids, radiant tubes, and retorts.
- Chemical Processing: Used for flair tips, piping, steam methane reformers, and heat exchangers.
- Galvanizing Lines: Used for their corrosion resistance.
Heat-resistant alloys are also used in a wide range of industries including:
- Power Generation
- Aerospace
- Oil and Gas
- Steel Manufacturing
Conclusion
Heat-resistant alloys are at the heart of numerous high-temperature applications. Understanding their properties and how they behave in various environments is crucial to making the right material selection.
We hope this blog post has provided you with valuable insights into the world of heat-resistant alloys. If you have any questions or need further assistance, please don’t hesitate to reach out to us. You can contact us via email or phone, and we’ll be happy to help. 1-800-521-0332 or email us metallurgical-help@rolledalloys.com
Buy Online Anytime
Our dashboard makes it even easier to shop online anytime from anywhere. Quote, buy, and track 24 hours a day at rolledalloys.com.
Best Practices When Using Duplex Stainless Steels
Gain deeper insight into duplex stainless steel and master best practices in metallurgy for peak performance in demanding applications.
Things to Know About PREN
Highlighting the importance of factors beyond PREN, like manufacturing processes and heat treatment, is essential for predicting corrosion resistance accurately in various environments.
Coming to Tampa!
We are pleased to announce the grand opening of our new bar processing facility dedicated to stainless bar processing.
2024 Trade Shows
Come talk to a Rolled Alloys representative in person about your project. You can find us at these trade shows.
Best Practices When Using Specialty Materials for SWRO Feed and Brine Reject Lines
In our webinar, we’ll explore the fascinating journey of stainless steels in SWRO (Seawater Reverse Osmosis) applications.
Los Angeles Operations Tour
Welcome to Rolled Alloys, Los Angeles, where our General Manager, Carol Plana, with nearly two decades of experience, leads an operations tour. Our primary focus is on serving aerospace and space exploration customers, offering a unique inventory of titanium in various forms, and specializing in customizing materials to meet specific customer requirements.
