ThePipingMart Blog Grades 446 Stainless Steel (UNS S44600) – Composition, Properties and Uses

446 Stainless Steel (UNS S44600) – Composition, Properties and Uses

446 Stainless Steel

UNS S44600 is ferritic stainless steel that exhibits good corrosion resistance, excellent weldability, and decent formability. It is often used in high-temperature applications, making it one of the most versatile and reliable metals available. This blog post will discuss the composition, mechanical properties, physical properties, and uses of 446 stainless steel to help you understand its potential.

446 Stainless Steel Composition

SS 446 contains a combination of chromium (around 18%), molybdenum (around 1%), and nickel (about 2%). It also has a low carbon content. This combination gives it excellent resistance to oxidation at high temperatures. In addition to these metals, it also has trace amounts of phosphorus and sulfur, which add additional strength to the material.

Grade C Mn P S Si Cr Ni N
SS 446 0.2 max 1.5 max 0.04 max 0.03 max 1 max 23-27 0.75 max 0.25 max

446 Stainless Steel Mechanical Properties

UNS S44600 has good strength at elevated temperatures due to its low carbon content. It also has an impressive yield strength of around 75ksi while maintaining a relatively low ductility rating compared with other grades of stainless steel. Its toughness also makes it ideal for welding purposes, as it can withstand mild shock loads without cracking or breaking down. Additionally, its wear resistance is impressive as it does not readily corrode or wear away over time like some other metals.

Grade Tensile Strength (MPa) Yield Strength (0.2%Offset) (MPa) Elongation % min. Brinell HARDNESS (HBW) Rockwell HARDNESS Heat Treating Temperature, min or range (�C)
SS 446 515 min. 275 min 20 217 max. HRB- 96 max. 1040

446 Stainless Steel Physical Properties

SS 446 has a density of around 0.288 lbs per cubic inch which makes it lightweight enough for many applications but still strong enough to handle tough conditions. Its melting point is around 2700°F, which allows it to be used in high-temperature environments without worrying about warping or melting the material itself. Additionally, its thermal conductivity is quite good, so heat can easily travel through the material without any loss in power or efficiency.

Properties Metric Imperial
Density 7.80 g/cm3 0.282 lb/in³

446 Stainless Steel Equivalent

446 UNS S44600 1.4762 X10CrAlSi25 Z10CAS24 SUH446

446 Stainless Steel Uses

UNS S44600 is often used in industrial applications such as boilers and furnaces due to its ability to withstand extreme temperatures and chemical corrosion from acids or alkalis. It can also be used for exhaust systems on cars and trucks and for storage tanks in chemical plants since it resists pitting caused by acidic substances such as saltwater or chlorine solutions. Additionally, because of its excellent weldability properties, it can be used in welding projects with the confidence that there won’t be any cracks or leaks due to weak welds along seams or joints over time.


All in all, 446 stainless steel is an incredibly versatile material that offers many advantages over other types of metal alloys due to its superior corrosion resistance at high temperatures combined with good mechanical properties such as strength and ductility ratings that make it ideal for a variety of applications across multiple industries including automotive manufacturing and chemical processing plants where extreme temperatures are common conditions each day. With so many benefits packed into one metal alloy, 446 stainless steel truly stands out among others on the market today!

Related Post