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Credibility ,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.
What are the characteristics of 321 Stainless Steel?
Stainless Steel 321 Chemical Composition, %
Cr |
Ni |
Mo |
Cu |
Ti |
C |
|
---|---|---|---|---|---|---|
MIN |
17.0 |
9.0 |
- |
- |
5x(C+N) |
- |
MAX |
19.0 |
12.0 |
0.75 |
0.75 |
0.70 |
0.08 |
Mn |
Si |
P |
S |
N |
Fe |
|
MIN |
- |
0.25 |
- |
- |
- |
- |
MAX |
2.0 |
1.0 |
0.04 |
0.03 |
0.1 |
Bal |
What applications might 321 Stainless Steel be used?
Mechanical Properties
Average Elevated Temperature Tensile Properties
|
Ultimate Tensile Strength, ksi |
.2% Yield Strength, ksi |
---|---|---|
68 |
84 |
38 |
400 |
62 |
20.5 |
600 |
62 |
18 |
800 |
62 |
17 |
1000 |
59.5 |
16.5 |
1200 |
45.5 |
16 |
1400 |
27.5 |
14 |
Welding Stainless Steel 321
321 Stainless Steel is readily welded by all common methods including submerged arc. Appropriate weld fillers are most often specified as AWS E/ER 347 or E/ER 321.
This alloy is generally considered to have comparable weldability to 304 and 304L stainless steel with the main difference being the titanium addition which reduces or prevents carbide precipitation during welding.
321 Stainless is available in the following forms at Yaang
Source: Yaang Pipe Industry Co., Limited (www.yaang.com)
Tel No:+86-18267732328 / Email:[email protected]
Address:Longwan District, Wenzhou, Zhejiang Province, China.
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Yaang Pipe Industry Co., Ltd. is an international supplier of piping solutions for flange, butt welding fittings, socket welding fittings and threaded fittings. Our products are widely used in different industrial fields, including oil and gas, chemical industry, petrochemical industry, power plant, pulp and paper industry, environmental and water conservancy engineering, engineering projects, etc.