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Stainless steel 321 pipes consist primarily of iron with a slightly higher chromium content than other stainless steel pipes. This allows these pipes to contain higher amounts of nickel, carbon, and titanium, which contributes to their corrosion-resistant qualities. Its unique chemical composition gives it increased resistance to intergranular corrosion even after exposure to high temperatures and its ability to withstand scaling at elevated temperatures. Stainless steel 321 pipes are the preferred choice for many applications due to their superior performance over other materials, such as carbon steel. They can have a longer lifespan in the right environment than other pipe materials while still providing strength.

321 SS pipes are increasingly becoming essential in our daily lives. This robust metal material combines nickel and chromium, providing it with excellent oxidation and corrosion-resistant properties. It can be commonly seen in diverse industries such as energy, oil, and gas, marine environments, water treatment systems, chemical processing plants, automotive components, food processing, and storage, among many others. Thanks to the fantastic durability offered by SS 321 pipes, they can safely handle medium-range temperatures between 1600F to 2000F. In addition to its general hardiness, this specific grade of stainless steel can also be used for welding due to its good formability in various sizes and shapes.

Chemical Composition of Stainless Steel 321 Pipes

This table provides a comprehensive breakdown of important factors in the Chemical Composition of Stainless Steel 321 Pipes.

 

Cr

Ni

Mo

Ti

C

Mn

Si

P

S

N

Fe

MIN

17.0

9.0

-

5x(C+N)

-

-

0.25

-

-

-

-

MAX

19.0

12.0

0.75

0.70

0.08

2.0

1.0

0.045

0.03

0.1

Bal

The specified range of chromium, nickel, titanium, and other elements ensures the quality of Stainless Steel 321 Pipes.

Mechanical Properties of Stainless Steel 321 Pipes

Explore the mechanical properties of Stainless Steel 321 Pipes across different temperatures in the table below.

Temperature, °FUltimate Tensile Strength, ksi.2% Yield Strength, ksi
6893.336.5
40073.636.6
80069.529.7
100063.527.4
120052.324.5
135039.322.8
150026.418.6

Stainless Steel 321 Pipes exhibit varying tensile and yield strengths at different temperatures.

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