AWS Class ER90S-B9 MIG & TIG Welding Wire – Composition, Properties, and Uses

When it comes to welding, selecting the right welding wire is essential to the success of your project. AWS Class ER90S-B9 is an alloy steel filler metal commonly used in MIG and TIG welding applications. It is known for its high strength and excellent corrosion resistance. This blog post will explore everything you need about AWS Class ER90S-B9 MIG & TIG.

What is AWS Class ER90S-B9 MIG & TIG?

AWS Class ER90S-B9 MIG & TIG welding electrodes are an all-purpose, low-hydrogen electrode designed for hard-facing and joining applications. The low hydrogen content gives the weld metal a higher strength and greater resistance to cracking when used in high temperatures. This electrode type provides excellent results on steel components up to 1¼ inches thick and cast iron and stainless steel where maximum corrosion resistance is required. It’s also great for repairing cracked or defective base metals such as cracks, porosity, undercuts and other problems resulting from improper aluminium welding procedures. It can be used in short circuit transfer (MIG) mode or pulsed/spray transfer (TIG).

ER90S-B9 MIG & TIG Welding Wire Composition

The AWS Class ER90S-B9 MIG & TIG welding wire comprises chromium, molybdenum, and vanadium. The percentage of chromium ranges from 8.5 to 10.5%, molybdenum ranges from 0.90 to 1.20%, and vanadium ranges from 0.15 to 0.25%. This welding wire is classified as low-carbon content and has low impurities, which improves its weldability.

ER90S-B9 MIG & TIG Coated Wire Physical Properties

AWS Class ER90S-B9 MIG & TIG welding alloy are available in different diameters ranging from 0.023″ to 0.045″. The wire is shiny and easily identified by its blue packaging. This welding wire has a 7.9 g/cm³ density and a melting range of 1425-1510°C.

ER90S-B9 MIG & TIG Welding Wire Mechanical Properties

AWS Class ER90S-B9 MIG & TIG electrode has excellent mechanical properties, including high tensile strength, toughness, and good ductility. It has a yield strength of 90 ksi and a tensile strength of 110 ksi, making it suitable for various welding applications that require high strength.

ER90S-B9 MIG & TIG Coated Wire Trade Names

ER90S-B9 MIG & TIG Welding Wire Parameters

ER90S-B9 MIG & TIG Coated Wire Uses

AWS Class ER90S-B9 MIG & TIG filler wire is commonly used in welding applications that require high strength, such as pressure vessels, boilers, and piping systems. It is also used in the aerospace and petrochemical industries due to its excellent resistance to corrosion and oxidation.

ER90S-B9 MIG & TIG Welding Wire Heat Treatment

AWS Class ER90S-B9 MIG & TIG filler metal can be heat-treated after welding to achieve optimal results. The recommended heat treatment is to reheat the welded part to a temperature of 740-760°C for 1 hour, followed by air-cooling. This process improves the mechanical properties of the weld and reduces the risk of cracking.

ER90S-B9 MIG & TIG Coated Wire Corrosion Resistance

AWS Class ER90S-B9 MIG & TIG welding wire has excellent corrosion resistance to various media, including acids, bases, and chlorides. It’s low carbon and low impurities make it resistant to intergranular corrosion, making it suitable for welding applications involving exposure to harsh environmental conditions.

Conclusion

AWS Class ER90S-B9 MIG & TIG welding wire is a high-strength, low-carbon alloy steel filler metal widely used in welding applications that require excellent resistance to corrosion and oxidation. Its excellent mechanical properties suit high-pressure vessels, boilers, and piping systems. The welding wire is easily identified by its blue packaging and is available in different diameters. Proper heat treatment after welding can improve the mechanical properties of the weld and reduce the risk of cracking. Overall, AWS Class ER90S-B9 MIG & TIG welding wire is an excellent option for high-strength welding applications that require excellent corrosion resistance.

Krutik Upadhyay

Hey, I’m Krutik, a casual blogger expert in the metal industry. I am passionate about providing valuable information to my readers. With a background in engineering and construction, I like playing Cricket & watching Netflix shows in my free time. Thank you for visiting my blog, and I hope you find my information helpful!