Q&A

What is 409 grade stainless steel?

What is 409 grade stainless steel?

Grade 409 is a stabilized ferritic general purpose stainless steel with 11% chromium. It is especially useful for applications requiring oxidation or corrosion protection beyond the capability of carbon steel and some coated steels.

What does SUS 304 stand for?

First of all, the ‘grade’ of the stainless steel refers to its quality, durability and also temperature resistance. “SS” is short for “Stainless Steel”, “SS304” is short for “Stainless Steel 304”. SUS304 means 304 stainless steel under Japanese standard.

Does SUS 304 rust?

Both steels are durable and provide excellent resistance to corrosion and rust. 304 stainless steel is the most versatile and widely used austenitic stainless steel in the world, due to its corrosion resistance. If your application uses milder acids or does not contain salt exposure, stainless 304 is perfect.

Is 304 stainless steel rust proof?

304 stainless steel is the most common form of stainless steel used around the world due to excellent corrosion resistance and value. 304 can withstand corrosion from most oxidizing acids. That durability makes 304 easy to sanitize, and therefore ideal for kitchen and food applications.

What is the difference between 304 and 409 stainless steel?

304 is an austenitic stainless steel high in chromium and nickel with very high corrosion resistance. It is one of the most commonly produced and used stainless steel grades. 409 is a ferritic stainless steel with less chromium and very little nickel.

What are the properties of Sus 304 stainless steel?

SUS 304 stainless steel has good weldability and can be welded by the usual welding method without heat treatment before welding. However, the welding of SUS 304 material are also insufficient: after welding large steel parts, it is sensitive to intergranular corrosion in chlorine-containing medium.

What is the purpose of stainless steel Type 409?

Description Type 409 is a heat resisting ferritic stainless steel providing good oxidation and corrosion resistance compared to carbon steel. This titanium stabilized grade was developed for automotive exhaust systems but its good formability, weldability, and corrosion resistance has led to its use in other applications.

What is the corrosion resistance of grade 409 steel?

However, the corrosion resistance is lower than that of grade 430 steels containing 17% chromium. The surface of grade 409 steels is liable to mild corrosion, which limits the usage of steels for decorative purposes.

What does Sus stand for in stainless steel?

Material SUS304 Meaning SUS is the first letter of “Steel Use Stainless” written in English. The stainless steel number consists of three digits, the 300 series is austenitic stainless steel, and the 400 series is ferritic or martensitic stainless steel.