ASTM A312 TP321 / S32100 SEAMLESS PIPE NACE MR0175 / ISO 15156 APPROVED
ASTM A312 TP321 / S32100 SEAMLESS PIPE NACE MR0175 / ISO 15156 APPROVED
Overview
The characteristics of 321 stainless steel seamless pipe mainly include wear resistance, high temperature resistance, creep resistance, excellent high temperature stress fracture performance, and high temperature creep resistance.
321 stainless steel is a Ni-Cr-Ti austenitic stainless steel with excellent wear resistance, high temperature resistance, and creep resistance, which makes it very suitable for manufacturing wear-resistant acid containers, lining of wear-resistant equipment, and conveying pipelines. In addition, 321 stainless steel exhibits excellent corrosion resistance in the atmosphere and is widely used in industries such as petrochemicals, power, bridges, and automobiles. Its excellent performance demonstrates significant superiority in the use of materials for high-pressure and high-strength mechanical structures.
The characteristics of 321 stainless steel seamless pipe make it a high-performance material that can maintain stable performance in harsh environments, ensuring long-term stable operation of equipment and systems. Whether used for high-pressure steam boiler pipelines or other applications that require high temperature and pressure resistance, 321 stainless steel seamless pipes can provide reliable support and protection.
Advantages:
- Strength and Durability: excellent strength and durability, suitable for demanding environments.
- Corrosion Resistance: good resistance to a wide range of corrosive substances.
- Seamless Construction: eliminate the risk of weak points associated with welded seams, improving reliability.
- Smooth Interior Surface: smooth interior surface, reducing friction and pressure drop in fluid flow.
Chemical composition of TP321
|
Material grade |
Norm |
C |
Si |
Mn |
P |
S |
Cr |
Ni |
|---|---|---|---|---|---|---|---|---|
|
1.4541 |
EN 10216-5 |
0.080 |
1.00 |
2.00 |
0.040 |
0.015 |
17.50 - 19.00 |
9.00 - 1200 |
|
TP321 |
ASME SA312 / ASTM A312 |
0.080 |
1.00 |
2.00 |
0.045 |
0.030 |
17.00 - 19.00 |
9.00 - 12.00 |
Mechanical properties and heat treatment
| Material grade | Norm | Rp 0.2 MPa min. |
Rp 1.0 MPa min. |
Rm MPa min. max. |
A min.% |
Hardness HRB max. |
Heat treatment |
|---|---|---|---|---|---|---|---|
| 1.4541 | EN 10216-5 | 200 | 235 | 500 - 730 | 35 | solution annealed | |
| TP321 | ASME SA312 / ASTM A312 | 205 | 515 | 35 | 90 | solution annealed |
Application:
- Oil and Gas Industry: SS321 seamless pipes are used in oil and gas exploration and production due to their resistance to corrosive environments.
- Chemical Processing: In chemical processing plants, SS321 seamless pipes are utilized for conveying corrosive substances.
- Heat Exchangers: SS321 seamless pipes are common in heat exchangers due to their high-temperature strength and corrosion resistance.
- High-Temperature Applications: Industries such as power generation, aerospace, and automotive utilize SS321 seamless pipes for applications requiring resistance to high temperatures.
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