ASTM A312 TP 321 Pipes & Tubes are produced from a titanium-stabilized austenitic stainless steel grade designed for service in elevated temperature environments. The addition of titanium prevents chromium carbide precipitation during welding and exposure to high temperatures, providing excellent resistance to intergranular corrosion. This makes TP 321 Pipes & Tubes particularly suitable for applications where thermal stability and long-term performance are critical..
Compared to standard 304 stainless steel, ASTM A312 TP 321 offers improved creep resistance and strength at higher temperatures. The grade maintains good toughness and corrosion resistance while performing reliably in continuous and intermittent service up to elevated operating ranges. As a result, TP 321 Pipes & Tubes are widely used in heat exchangers, boilers, exhaust systems, petrochemical processing units, and refinery applications..
ASTM A312 TP 321 Pipes & Tubes are manufactured in both seamless and welded forms, including ERW and EFW, in accordance with ASTM A312 / ASME SA312 standards. These pipes and tubes are supplied in annealed and pickled condition to ensure uniform mechanical properties, smooth surface finish, and compliance with international dimensional and quality requirements..
Metal Tubular Products is a recognized global stockist and supplier of ASTM A312 TP 321 Pipes & Tubes, offering a comprehensive inventory across various sizes, schedules, and wall thicknesses. The company supports standard and customized requirements, ensuring timely supply for both small-scale and large industrial projects worldwide..
| Standard | ASTM A312 / ASME SA312 |
|---|---|
| Grade | TP 321 |
| Material Type | Austenitic Stainless Steel (Titanium Stabilized) |
| UNS Number | S32100 |
| Product Forms | Seamless (SMLS), Welded (ERW / EFW) |
| Supply Condition | Annealed & Pickled |
| End Finish | Plain End, Beveled End, Threaded |
| Application | Heat Exchangers, Boilers, Refineries, Petrochemical & High-Temperature Services |
Quality assurance is a key focus in the supply of TP 321 stainless steel pipes and tubes. Each product is supplied with EN 10204 3.1 / 3.2 material test certificates, full traceability, and optional third-party inspection. This ensures that the pipes meet stringent chemical, mechanical, and dimensional specifications required for demanding service conditions..
With a strong global logistics network, Metal Tubular Products supplies ASTM A312 TP 321 Pipes & Tubes to clients across Asia, Europe, the Middle East, Africa, and the Americas. Reliable delivery schedules, competitive pricing, and consistent product quality make the company a preferred partner for international EPC contractors and industrial end users..
| Element | Composition (%) |
|---|---|
| Carbon (C) | Max 0.08 |
| Manganese (Mn) | Max 2.00 |
| Phosphorus (P) | Max 0.045 |
| Sulfur (S) | Max 0.030 |
| Silicon (Si) | Max 1.00 |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 12.0 |
| Titanium (Ti) | 5 × C min to 0.70 max |
| Property | Value |
|---|---|
| Tensile Strength | Minimum 515 MPa |
| Yield Strength (0.2% Offset) | Minimum 205 MPa |
| Elongation | Minimum 35% |
| Hardness | Maximum 95 HRB |
| Outside Diameter | Wall Thickness | Length |
|---|---|---|
| 1/8” NB to 36” NB | Schedule 5S to XXS | Single Random, Double Random, Custom Length |
| 6 mm to 914 mm | 0.5 mm to 40 mm | Up to 12 meters |
| Standard | Equivalent Grade |
|---|---|
| UNS | S32100 |
| EN | 1.4541 |
| DIN | X6CrNiTi18-10 |
| JIS | SUS 321 |
ASTM A312 TP 321 Pipes & Tubes are primarily used in high-temperature and corrosive environments such as heat exchangers, boilers, refineries, petrochemical plants, exhaust systems, and chemical processing industries. Their titanium stabilization provides excellent resistance to intergranular corrosion.
TP 321 is a titanium-stabilized austenitic stainless steel grade that prevents chromium carbide precipitation during welding or high-temperature exposure, making it ideal for elevated temperature service.
Yes, ASTM A312 TP 321 Pipes & Tubes offer excellent weldability without the risk of intergranular corrosion, eliminating the need for post-weld heat treatment in most applications.
ASTM A312 TP 321 Pipes & Tubes are available in Seamless (SMLS), ERW, and EFW welded forms, allowing flexibility for different pressure, diameter, and project requirements.
ASTM A312 TP 321 Pipes & Tubes are stocked and supplied worldwide by Metal Tubular Products, offering a wide size range, fast delivery, and compliance with international quality standards.
We export steel pipes and tubes to over 60 countries worldwide, serving clients across Asia, Europe, the Middle East, Africa, Oceania, and the Americas. Our strong global logistics network ensures reliable delivery, quality assurance, and compliance with international standards.
Export Destinations Include:
Afghanistan, Albania, Andorra, Angola, Austria, Australia, Bahrain, Bangladesh,
Bhutan, Brazil, Brunei, Belarus, Belgium, Bulgaria, Cambodia, China, Cyprus,
Croatia, Czech Republic, Canada, Denmark, Estonia, Egypt, Finland, France,
Germany, Greece, Georgia, Hungary, Iceland, Ireland, Italy, Indonesia, Iran,
Iraq, Israel, Japan, Jordan, Kazakhstan, Kuwait, Kyrgyzstan, Lebanon, Latvia,
Latin America, Liechtenstein, Lithuania, Luxembourg, Malta, Madagascar, Mexico,
Moldova, Monaco, Malaysia, Maldives, Mongolia, Myanmar (Burma), Nepal,
New Zealand, North Korea, Netherlands, Norway, Nigeria, Oman, Poland, Portugal,
Pakistan, Palestine, Philippines, Qatar, Russia, Romania, San Marino,
Serbia and Montenegro, Slovakia, Slovenia, Spain, Sweden, Switzerland,
Saudi Arabia, Singapore, South Korea, South Africa, Sri Lanka, Sudan, Syria,
Taiwan, Tanzania, Tajikistan, Thailand, Turkey, Turkmenistan, Ukraine,
United Kingdom, United Arab Emirates (UAE), Uzbekistan, Venezuela, Vietnam,
Yemen, and more.
