Introduction

2507 tubing, also known as SAF 2507 or UNS S32750, is a highly specialized type of stainless steel tubing that offers exceptional corrosion resistance and high mechanical strength. This duplex stainless steel tubing combines the properties of both austenitic and ferritic stainless steels, making it an ideal choice for a wide range of demanding applications.

1.  Chemical composition and performance of 2507 pipe

2507 pipe, also known as UNS S32750 or 1.4410, has a chemical composition of 25% chromium, about 7% nickel, and a certain amount of molybdenum. These elements work together to make it far more corrosion-resistant in chloride environments than traditional stainless steel materials. For example, compared with 904L, 2507 pipe has stronger corrosion resistance to diluted sulfuric acid mixed with chloride ions; while in the face of hydrochloric acid environment, 316L may face the risk of local or overall corrosion, but 2507 pipe shows strong resistance to pitting and crevice corrosion.

In addition to strong corrosion resistance, 2507 pipe also has high compressive strength, impact strength, low thermal expansion coefficient and high thermal conductivity. These mechanical properties make it very suitable for manufacturing structural parts and mechanical components, such as pressure vessels, centrifuges, piping systems, etc. At the same time, the lower carbon content reduces the risk of intergranular carbide precipitation during heat treatment, thereby enhancing the ability to resist intergranular corrosion.

2. Application Fields

The excellent performance of 2507 pipe has made it widely used in many fields. In the pulp and paper industry, it is often used as a piping system material to withstand the erosion of various chemicals. In seawater desalination systems, 2507 pipe is also favored for its excellent resistance to seawater corrosion. In addition, in the fields of flue gas purification, heat exchangers, chemical tanker piping systems and seawater systems, 2507 pipe also plays an irreplaceable role.

3. Standards and Specifications

The production of 2507 pipe follows a series of international standards and specifications. For example, standards such as ASTM A240 and A789 specify the chemical composition, mechanical properties, and manufacturing process of 2507 stainless steel. At the same time, different manufacturers will also provide pipe products of different specifications and sizes according to customer needs to meet the needs of various application scenarios. These pipe products have a wide range of sizes, ranging from 1/4 inch to 1 inch, and their wall thickness and length can be customized according to specific needs.

4. Welding and processing

In terms of welding and processing, 2507 pipe also shows good weldability and machinability. Due to its high alloy content, appropriate welding materials and process parameters need to be used during the welding process to ensure the quality of the weld. At the same time, due to the particularity of its duplex structure, it is also necessary to avoid excessive heat treatment and mechanical stress concentration during processing, so as not to affect the performance and service life of the pipe.

5. Summary

As a high-performance duplex stainless steel pipe, 2507 pipes play an important role in many fields with their excellent corrosion resistance and high strength. Its unique chemical composition and mechanical properties enable it to maintain stable performance in extreme environments and meet the needs of various complex working conditions. With the continuous advancement of industrial technology and the continuous expansion of application fields, the application prospects of 2507 pipes will be broader.

Why Zhengkuan Steel?

At Zhengkuan Steel, we are committed to delivering superior stainless steel coil products tailored to your needs. Here’s why you should choose us:

• Quality Assurance:We implement rigorous quality control processes to ensure you receive the best products.
• Expert Guidance: Our experienced team provides expert advice and support to help you select the right material for your project.
• Competitive Pricing: We offer premium products at competitive prices, ensuring excellent value for your investment.
• Customer Commitment: Your satisfaction is our top priority, and we strive to exceed your expectations with every interaction.

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