439 Stainless Steel

This grade may be used in the annealed cold formed or as welded condition in applications where other stainless steels such as type 304 304l and type 430 are used.

439 stainless steel. Aisi type 439 also known as astm xm 8 is a ferritic stainless steel designed to resist corrosion in a variety of oxidizing environments from fresh water to boiling acids. Type 439 is an 18 chromium titanium stabilized ferritic stainless steel with corrosion resistance similar to that of 304 304l stainless steel. T409 t439 are offered in sheet coil strip coil panels plates washers. Straub metal international founded in 1970 is a worldwide distributor of type 409 stainless steel.

Stainless steel grade 439 is capable of being made into complex shapes such as tubular manifolds and exhaust system components where temperatures tend to go beyond the oxidation limit of grade 409 steel. This designation is related to the microstructure of the metal the differences can be seen under an electron microscope in this picture a is austenitic 304 and b is ferritic 430. It is also preferred where wet corrosion resistance especially to chlorides is needed. Type 439 stainless steel is a ferritic stainless steel designed to resist corrosion in a variety of oxidizing environments from fresh water to boiling acids.

316l is an austenitic stainless steel and 439 is a ferritic stainless steel. Our inventory of stainless steel alloy grades include t409 409 al t439 t441 18crcb stainless steel. A ferritic stainless steel tube type 439 outperforms both type 409 and 436 in oxidation and corrosion resistance in the most demanding environments. It may be used in either the annealed cold formed or as welded condition in many applications where other stainless steel alloys such as type 304 type 410 type 409 and type 430are used.

The alloy resists intergranular corrosion and stress corrosion cracking. Introduction ati 439 a titanium stabilized 18 percent chromium alloy is also known as astm xm 8 and by the uns designation s43035 is a ferritic stainless steel designed to resist corrosion in a variety of oxidizing environments from fresh water to boiling acids. These two types of stainless steel are categorized by their microstructure. Type 439 is stabilized with a titanium ti addition resulting in good weldability.