321 stainless steel pipe is made of austenitic steel containing titanium. It has high corrosion resistance, high strength and high temperature resistance, and belongs to the 300 series stainless steel. It can withstand the erosion of chloride pollution at high temperatures, with a maximum temperature of 600°C. The steel's properties allow it to perform well in high temperatures and corrosive environments, making it widely used in chemical processing, aerospace and industrial heating applications.
321 steel pipe has excellent temperature resistance and can withstand high temperature environments. For example, it is used in exhaust systems or turbines with temperatures up to 2000°F (1093°C).
In terms of physical properties, the hardness of 321 stainless steel pipe is 217HB, which means it has high hardness and good wear resistance. At the same time, its ultimate tensile strength is 80ksi and yield strength is 45ksi. These mechanical properties make it excellent in withstanding heavy loads and complex environmental pressures.
SS 321 pipes are widely used in petroleum, chemical, food, light industry, mechanical instrumentation and other industries. It is used to manufacture ring-shaped parts because it can improve material utilization, simplify the manufacturing process, and save materials and processing time.
Chemical Composition of UNS S32100 Stainless Steel Pipe
|
Grade |
|
C |
N |
Ni |
Si |
P |
S |
Mn |
Cr |
TI |
|
SS 321 |
Min |
- |
- |
9.00 |
- |
- |
- |
- |
17.0 |
5 (C+N) |
|
max |
0.08 |
0.10 |
12.00 |
1.00 |
0.045 |
0.030 |
2.00 |
19.0 |
0.70 max |
Mechanical Properties of UNS S32100 Stainless Steel Pipe
|
Grade |
Tensile Strength (MPa) min |
Elongation (% in 50mm) min |
Yield Strength 0.2% Proof (MPa) min |
Hardness |
|
|
Rockwell B (HR B) max |
Brinell (HB) max |
||||
|
SS 321 |
515 |
40 |
205 |
95 |
217 |

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With rich production experience, excellent technical capabilities and high-quality product portfolio, our company is committed to providing customers with excellent steel solutions. With customer satisfaction as our core, we not only provide high-quality products, but also provide customized services to meet the needs of various industries and projects.

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FAQ
Q. What's your advantage?
A. Honest business with competitive price and professional service on export process.
Q. Do you provide custom made Products service?
A. Yes if you have your own design, we can produce according to your specification and drawing.
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A. Yes, we have appointed sea and rail freight forwarders, we can serve our customers with the best price, the best shipment schedule and the best freight rate. We can offer the best price, the fastest shipping schedule and the most professional service.
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