2507 Stainless Steel Coil Suppliers

Duplex stainless steel is a kind of stainless steel with the dual organization – Ferrite and Austenite. According to its chemical composition, duplex stainless steel can be divided into the following types:

Cr18 Type Duplex Stainless Steel: The chemical composition of this duplex stainless steel includes 18% chromium and about 5% nickel, and is commonly used in the manufacture of some chemical equipment and marine engineering equipment.

Cr23 Type Duplex Stainless Steel (Without Mo): The chemical composition of this duplex stainless steel includes 23% chromium and about 4% nickel, without molybdenum element, so it has a lower price and certain corrosion resistance, commonly used in the manufacture of some low corrosive environment.

Cr22 Type Duplex Stainless Steel: The chemical composition of this duplex stainless steel includes 22% chromium and about 5% nickel, contains a small number of molybdenum elements, has excellent corrosion resistance, and is widely used in chemical and marine engineering fields.

Cr25 Type Duplex Stainless Steel: The chemical composition of this duplex stainless steel includes 25% chromium and about 7% nickel, contains a higher chromium and nickel content, has higher strength and better corrosion resistance, widely used in marine engineering, petrochemical, aerospace, and other fields.

Huaxiao is your stainless steel coil supplier, no matter what kind of stainless steel coil you need, we are able to provide you with satisfactory solutions. If you have any needs or questions, please feel free to contact us and we will be happy to serve you.

Duplex stainless steel was originally invented by the French company Avesta in the late 1960s. At that time, Avesta was committed to finding a new stainless steel that would meet the needs of use in special environments such as hydrogen corrosion and stress corrosion. After a long period of experiments and research, they found that by adding a certain amount of substable ferrite phase to the chromium and nickel alloy, a stable austenitic phase could be formed at high temperatures, resulting in a duplex stainless steel with excellent corrosion resistance and mechanical properties.

2507 stainless steel coils and 2205 stainless steel coils are two common duplex stainless steel materials, and their main differences lie in their chemical composition and performance characteristics.

First, the chemical composition of 2507 stainless steel coils contains 22% chromium and 5% nickel, in addition to 3% molybdenum and 0.25% nitrogen. In contrast, the 2205 stainless steel coil chemical composition contains only 22% chromium and 3% nickel, with no added molybdenum and nitrogen.

Second, because 2507 stainless steel coils have added elements such as molybdenum and nitrogen, it has higher corrosion resistance and better strength, especially in chloride media with better corrosion resistance. While 2205 stainless steel coils, although in a general corrosive environment, has good performance, in the chloride media corrosion resistance is slightly inferior to 2507 stainless steel coil.

In addition, the 2507 stainless steel coils and 2205 stainless steel coil is more suitable for high-temperature and high-pressure working environment, its wear resistance is also better than the 2205 stainless steel coil.

Because 2507 stainless steel coils have high strength and good corrosion resistance, it can be difficult to process. Specifically, 2507 stainless steel coils require attention in cutting, forming, drilling, and heat treatment during processing. 2507 stainless steel coils have high strength and hardness, which can easily lead to the wear of cutting tools, increased difficulty in drilling, and forming process requires a large punching force and higher processing temperature. In addition, because of its good corrosion resistance, so in the welding process also need to pay attention to the selection of suitable welding methods and materials to ensure the quality of the weld and overall performance. Therefore, for the processing of 2507 stainless steel coil, professional technicians and advanced processing equipment are required.

In order to keep 2507 stainless steel coils performing well and extending their service life, proper care and maintenance are required. The following are a few common recommendations:

Regular Cleaning: 2507 stainless steel coils should be cleaned frequently, especially if used outdoors. The surface can be gently wiped with soapy water or a neutral detergent and then rinsed off with water. Avoid using acidic or alkaline cleaners to avoid corroding the stainless steel surface.

Avoid Collision with Heavy Objects: 2507 stainless steel coils should be avoided to collide with heavy objects to avoid surface scratching or deformation. During handling or storage, light handling and light storage should be adopted.

Regular Painting: If the 2507 stainless steel coils are exposed to the outdoor environment, they should be regularly painted with rust-proof paint to protect the surface from oxidation and corrosion. Before painting, the surface should be cleaned.

Avoid Foreign Object Contamination: Avoid placing foreign objects on the surface of the 2507 stainless steel coil, especially chemicals or chlorine-containing substances. If these substances are accidentally spilled on, they should be cleaned immediately.

Regular Inspection: Regularly inspect the surface and weld seams of 2507 stainless steel coils for problems such as cracks or corrosion. If problems are found, they should be repaired or replaced in a timely manner.