Types Of Stainless Steel For TIG Welding.

Types Of Stainless Steel For TIG Welding.

Stainless steel has many types and grades, determined by its alloying elements. There are three main types you’ll most likely come across are:

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#Austenitic

Austenitic stainless steel is most appropriate for most GTAW projects and also the most common type you’ll encounter. It’s known to contain chromium, nickel, manganese, or molybdenum. Austenitic also has excellent corrosion resistance and weldability. Popular grades include 304, 310, and 316. Either has good weldability, but 304 is usually the more affordable option.

#Ferritic

Ferritic stainless steels have a lower nickel content, making them more affordable. Yet, the presence of more chromium and molybdenum improves their toughness. Unlike austenitic stainless, ferritic stainless steels are magnetic. Some common grades are 409, 430, and 444.

#Martensitic

This type of stainless steel is the least common. It works best for applications with a tempered and hardened edge. You probably TIG weld martensitic stainless steel, ever. That’s how rare it is. Some common grades are 410, 420, and 440A.