1.4541 ASTM S32100 321 Stainless Steel

This grade is a titanium stabilised austenitic stainless steel. The addition of titanium to 321 stainless Steel helps improve its welding properties and the elevated temperature properties of the steel. This stainless steel offers excellent oxidation resistance and corrosion resistance. It offers higher creep and stress rupture properties that 304 austenitic stainless steel grade. 321 stainless steel possesses excellent resistance to intergranular corrosion when worked or welded in temperatures with the carbide precipitation range of 427-818°C.

321 Stainless Steel Angle Bars By yaang.com

Type 321 Stainless Steel (UNS S32100) is an austenitic stainless steel angle bars that has fives times more titanium than carbon in its content. The increased titanium level aids in preventing carbide precipitation during welding. As a result, Type 321 Stainless Steel is both creep resistant and resistant to oxidation.

321 stainless steel flat rolled coil is generally used in applications that require sustainability to high intermittent temperatures.

About 321 Stainless Steel Information By yaang.com

321 Stainless Steel is a standard austenitic 18/8 stainless steel grade, (304), but stabilized by Titanium. The titanium within means the stainless steel is intergranular corrosion resistant after heating, (between 425-900 degrees Celsius). Remarkably high strength as well as scaling resistance and phase stability set 321 Stainless Steel apart from other similar grades. This grade is not, however, recommended for welding consumable, as the titanium component does not allow good transfer of heat across a high temperature arc.

(UNS S32100) 321 Stainless Steel By yaang.com

321 stainless steel, also known as UNS S32100 and Grade 321, is primarily comprised of 17% to 19% chromium, 12% nickel, .25% to 1% silicon, 2% maximum manganese, traces of phosphorus and sulfur, 5 x (c + n) .70% titanium, with the balance being iron. With regards to corrosion resistance, 321 Stainless Steel is equivalent to Grade 304 in the annealed condition and is superior if the application involves service in the 797° to 1652° F range. 321 Stainless Steel combines high strength, resistance to scaling and phase stability with resistance to subsequent aqueous corrosion.

321 Stainless Steel Technical Data Sheet By yaang.com

Technical Information for 321 stainless steel

Alloy	UNS Number	SAE Number
321 Stainless Steel	S32100	30321

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GENERAL PROPERTIES

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Type 321 stainless steel is a stabilized stainless steel which offers as its main advantage an excellent resistance to intergranular corrosion following exposure to temperatures in the chromium carbide precipitation range from 800 to 1500° F (427 to 816° C). Type 321 stainless steel is stabilized against chromium carbide formation by the addition of titanium.

321 Stainless Steel Property Data By yaang.com

321 Stainless Steel is a titanium stabilised chromium-nickel austenitic stainless steel with good strength and excellent corrosion resistance, as supplied in the annealed condition with a typical brinell hardness of 175. Characterised by high corrosion resistance in general atmospheric corrosive environments it exhibits excellent resistance to most oxidizing agents, general foodstuffs, sterilizing solutions, dyestuffs, most organic chemicals plus a wide variety of inorganic chemicals, also hot petroleum gases, steam combustion gases, nitric acid, and to a lesser extent sulphuric acid. It displays good oxidation resistance at elevated temperatures has excellent resistance to intergranular corrosion and has excellent weldability. 321 Stainless Steel cannot be hardened by thermal treatment, but strength and hardness can be increased substantially by cold working, with subsequent reduction in ductility.

The advantages of using 321 Stainless Steel vs 304/304L Stainless Steel By yaang.com

At first glance, it appears that type 304/304L Stainless Steel is very similar to type 321 Stainless Steel. Comparing the chemical composition of of 321 Stainless Steel and 304/304L Stainless Steel, it is clear that the chromium (Cr) and nickel (Ni) ranges of these alloys are very similar. The difference appears when the Stainless Steel using of “carbide precipitation” in the “heat-affected zone (HAZ)” is discued Stainless Steel or fatigue strength and temperature have to be considered.

Stainless Steel 321(UNS S32100), ASTM A 240, A 479, A 276 By yaang.com

321 Stainless Steel Overview

Stainless Steel 321 is a heat resistant, titanium stabilized, austenitic alloy that's commonly used for service in the 1000°-1600°F temperature range. 321 stainless steel is primarily used in applications that involve continuous and intermittent service temperatures within the carbide precipitation range of 800°-1500°F. Type 321 stainless steel is similar to type 304 stainless steel but with a titanium addition of at least five times the carbon content. This titanium addition reduces or prevents carbide precipitation during welding and in the 800°-1500°F service conditions. In order to provide optimum resistance to intergranular corrosion and to polythionic acid stress corrosion cracking in service temperatures at 1500°-1650°F an air cool may be used.