ASTM A312 TP 904L Pipes & Tubes are high-alloy austenitic stainless steel pipes designed for the most demanding industrial and chemical applications.
These pipes offer exceptional corrosion resistance, high strength, and excellent weldability, making them suitable for both onshore and offshore industrial projects.
TP 904L stainless steel features high levels of nickel, chromium, and molybdenum, along with a small addition of copper.
ASTM A312 TP 904L Pipes & Tubes are widely used in **chemical processing plants, petrochemical refineries, desalination plants, offshore oil and gas platforms, and power generation facilities**. Their excellent corrosion resistance and high mechanical strength make them reliable for both **high-pressure and high-temperature applications.
| Standard | ASTM A312 / ASME SA312 |
|---|---|
| Grade | TP 904L (UNS N08904) |
| Material Type | Austenitic Stainless Steel |
| Product Forms | Seamless (SMLS), Welded (ERW / EFW) |
| Manufacturing Process | Hot Finished / Cold Drawn |
| Supply Condition | Solution Annealed & Pickled |
| End Finish | Plain End, Beveled End, Threaded |
| Size Range | ½″ NB to 24″ NB (Seamless & Welded) |
| Schedules | SCH 5, 10, 20, 40, 80, 160, XS, XXS |
| Application | Chemical Processing, Oil & Gas, Petrochemical, Marine, Heat Exchangers |
ASTM A312 TP 904L Pipes & Tubes are high-alloy austenitic stainless steel products engineered for exceptional corrosion resistance in harsh chemical and marine environments. They are widely recognized for their durability, strength, and long service life, making them ideal for critical industrial applications..
TP 904L stainless steel is a low-carbon, high-nickel, high-chromium alloy with added molybdenum and copper. This unique composition provides outstanding resistance to acids, chlorides, and pitting corrosion, outperforming standard austenitic stainless steels like 304L and 316L..
| Element | Composition (%) |
|---|---|
| Carbon (C) | 0.020 max |
| Manganese (Mn) | 2.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.035 max |
| Silicon (Si) | 1.00 max |
| Chromium (Cr) | 19.0 – 23.0 |
| Nickel (Ni) | 23.0 – 28.0 |
| Molybdenum (Mo) | 4.0 – 5.0 |
| Copper (Cu) | 1.0 – 2.0 |
| Iron (Fe) | Balance |
| Property | Value |
|---|---|
| Minimum Yield Strength (0.2% Offset) | 220 MPa (32,000 psi) |
| Tensile Strength | 490 MPa (71,000 psi) min |
| Elongation | ≥ 35% |
| Hardness | 90 HRB max |
| Outside Diameter (OD) | Wall Thickness | Length |
|---|---|---|
| ½” NB to 24” NB | SCH 5, 10, 20, 40, 80, 160, XS, XXS / Custom | Random, Double Random, Fixed & Custom Cut Length |
| Standard | Equivalent Grade |
|---|---|
| UNS | N08904 |
| EN | 1.4539 (X1NiCrMoCu25-20-5) |
| DIN | 1.4539 |
| AFNOR | Z2 NCDU 25-20 |
| JIS | — (No direct equivalent) |
ASTM A312 TP 904L Pipes & Tubes are used in highly corrosive environments such as chemical processing, petrochemical plants, oil & gas refineries, marine applications, and heat exchangers. Their high nickel, molybdenum, and copper content provides excellent resistance to acids, chlorides, and pitting corrosion.
“TP” stands for Tube/Pipe, and “904L” is a low-carbon, high-alloy austenitic stainless steel grade. It is designed for superior corrosion resistance, especially against sulfuric acid, phosphoric acid, and seawater environments.
Yes, ASTM A312 TP 904L Pipes & Tubes perform well at elevated temperatures and retain good mechanical strength. However, maximum allowable temperatures depend on pressure and design codes such as ASME B31.3.
ASTM A312 TP 904L Pipes & Tubes are available in Seamless (SMLS) and Welded forms (ERW / EFW). They are typically supplied in solution-annealed and pickled condition to ensure optimal corrosion resistance.
No. PSL 1 and PSL 2 classifications apply only to API 5L line pipes. ASTM A312 TP 904L Pipes & Tubes are supplied as per ASTM/ASME requirements and purchaser-specific testing criteria.
ASTM A312 TP 904L Pipes & Tubes are supplied globally by experienced stainless steel manufacturers and stockists, offering a wide range of sizes, prompt delivery, and full compliance with ASTM and ASME 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.
