How to Fabricate Super Duplex 2507 Bolts for Customized Industrial Applications

How to Fabricate Super Duplex 2507 Bolts for Customized Industrial Applications

How to Fabricate Super Duplex 2507 Bolts for Customized Industrial Applications

How to Fabricate Super Duplex 2507 Bolts for Customized Industrial Applications

Are you looking for a reliable and cost-efficient way to fabricate custom bolts for industrial applications? Super Duplex 2507 is an excellent choice. Not only does this material offer superior corrosion resistance, but it can also be machined into unique bolt forms that meet your exact specifications. In this article, we’ll look at the advantages of using super duplex 2507 in custom bolt fabrication and provide expert tips on creating flawless results every time. So let’s get started!

What is Super Duplex 2507 Bolts?

Super Duplex 2507 Bolts are made from a super duplex stainless steel alloy. This type of steel is composed of chromium, molybdenum, nickel and iron, which is used in applications that require good corrosion resistance, strength and increased heat resistance. The bolts possess superior strength compared to conventional stainless steels and have good flexibility and excellent weldability properties. Super Duplex 2507 bolts have high chloride stress corrosion cracking resistance in severely corrosive environments like salt water. These bolts also exhibit improved pitting and crevice corrosion resistance compared to other stainless steel alloys, making them an ideal choice for industries such as chemical processing or oil refineries where they are regularly exposed to highly corrosive media.

How to Select Right Super Duplex 2507 Bolts

Material Selection: 

Super Duplex 2507 is an austenitic-ferritic stainless steel designed for high resistance to corrosion in the most aggressive applications. It has excellent mechanical properties, weldability, and corrosion resistance at low and elevated temperatures. When selecting Super Duplex 2507 bolts for your application, consider their higher strength and pitting/crevice corrosion resistance compared with other materials, such as 316L stainless steel. Additionally, look at its increased fatigue strength and improved stress cracking/corrosion fatigue behavior to ensure it can withstand extreme loads in corrosive environments. With the right material selection, you will have reliable connections that perform safely under duress or harsh environmental conditions.


After selecting the Super Duplex 2507 stock, it’s time to cut it into the desired size. This can be done using a chop saw or a bandsaw. It’s crucial to ensure the blade is sharp to prevent material deformation. Additionally, you will want to add a lubricant to the material and blade during cutting to prevent overheating and uneven cutting.


The next step is to thread the bolts once the material has been cut and shaped into the desired size and shape. A threading machine can be utilized for this process. You’ll want to ensure that proper die size and lead are used to ensure the precision of the threading process. Take note that an inadequate die lead will cause striping, while an oversized die lead causes misalignment when threading.

Heat treatment:

Super Duplex 2507 requires heat treatment to achieve its desirable properties fully. Heat treatment involves heating the material to a specific temperature and then cooling it at a controlled rate. Heat treatment ensures the Super Duplex 2507 bolts attain optimal strength and corrosion resistance.

Finishing touches:

The final step in fabricating Super Duplex 2507 bolts is the application of finishing touches. This includes the application of protective coatings, polishing, and marking. A protective coating such as zinc plating or phosphate coating is applied to prevent corrosion and enhance the durability of the bolts. Polishing leaves the bolts with a shiny, smooth surface while marking ensures that the bolts are identifiable for future reference.


Fabricating Super Duplex 2507 bolts is a complex process that requires attention to detail and expertise, from material selection to finishing touches. Selecting the right material, cutting, threading, heat treatment, and adding finishing touches are crucial in the fabrication process. This guide gives you the knowledge and tools to fabricate Super Duplex 2507 bolts efficiently and precisely. Ensure that you follow each step to the letter for the best outcome. Remember, quality should always come first in any bolt fabrication project.

Global Steelindia

Global Steel is a significant manufacturer and exporter of all ferrous and non-ferrous metals. As a pioneer and leader in the industry, Global Steel is at the forefront of technology and research.

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