Amardeep Steel Center stands as a premier manufacturer, supplier, and exporter of high-performance 904L Pipe Fittings. Engineered to thrive in some of the most corrosive industrial environments, our Stainless Steel 904L Pipe Fittings offer unparalleled resistance to a wide range of acids and chlorides. We produce a complete line of Stainless Steel 904L Fittings, all manufactured in strict compliance with international standards like ASTM B366.
For critical applications where standard stainless steels are inadequate, our 904L fittings provide the robust, long-lasting connections necessary for safe and efficient operations. We are dedicated to delivering superior quality and reliability for your most demanding projects.
What Are 904L Pipe Fittings?
904L Pipe Fittings are specialized components used to connect, control, and branch piping systems in severely corrosive environments. Often referred to as a "super austenitic" stainless steel, Grade 904L contains high levels of chromium, nickel, molybdenum, and copper. This powerful combination gives it exceptional resistance to general corrosion, pitting, and crevice corrosion, particularly in sulfuric, phosphoric, and other acidic environments where standard grades like 316L would quickly fail.
The key characteristics of super austenitic 904L stainless steel fittings include:
- Superior Corrosion Resistance: Its high alloy content makes it highly resistant to a wide range of inorganic and organic acids.
- Resistance to Stress Corrosion Cracking: The high nickel content provides excellent resistance to chloride stress corrosion cracking.
- Weldability and Formability: Despite its high alloy content, 904L maintains good weldability and formability.
These fittings are manufactured under standards such as ASTM B366, with the designation ASTM B366 WP904L fittings, ensuring they meet the stringent chemical and mechanical requirements for service in aggressive chemical and industrial processing plants.
Table of Contents
- 316/316L Pipe Fittings Specifications
- Chemical Composition & Mechanical Properties of 316/316L Pipe Fittings
- Mechanical Properties of 316/316L Pipe Fittings
- Heat Treatment & Tolerances of 316/316L Pipe Fittings
- Dimensional Tolerances of 316/316L Pipe Fittings
- Types & Forms of 316/316L Pipe Fittings
- Applications & Industries Served of 316/316L Pipe Fittings
- Why Choose Amardeep Steel for 316/316L Pipe Fittings?
- Related Products
- Get a Competitive Price
904L Pipe Fittings Specifications
At Amardeep Steel Center, every 904L stainless steel pipe fitting is produced to precise specifications. This ensures full compliance with global engineering codes and guarantees a perfect, reliable fit for your critical systems.
|
Specification |
Details |
|---|---|
|
Standard |
ASTM B366 / ASME SB366 |
|
Grade |
904L (UNS N08904) |
|
Types |
Seamless / Welded / Fabricated |
|
Buttweld Fittings Size |
1/2" to 48" |
|
Forged Fittings Size |
1/4” to 4” |
|
Bending Radius |
R=1D, 2D, 3D, 5D, 6D, 8D, 10D or Custom |
|
Wall Thickness / Schedule |
Sch 5s, 10s, 40s, 80s, 10, 20, 40, STD, 60, 80, XS, 100, 120, 140, 160, XXS |
|
Pressure Class (Forged) |
2000 LBS, 3000 LBS, 6000 LBS, 9000 LBS |
|
Dimensions |
ASME/ANSI B16.9, ASME B16.28, MSS-SP-43, MSS SP-75 |
Chemical Composition & Mechanical Properties of 904L Pipe Fittings
The elite performance of our acid-resistant SS 904L pipe fittings stems from their unique chemical formula and robust mechanical properties. We conduct rigorous testing on every batch to verify these critical characteristics.
Chemical Composition (wt %)
The high nickel and molybdenum content, along with the addition of copper, is key to this grade's exceptional corrosion resistance.
|
Grade |
C |
Mn |
Si |
P |
S |
Cr |
Ni |
Mo |
Cu |
|---|---|---|---|---|---|---|---|---|---|
|
904L |
0.02 max |
2.00 max |
1.00 max |
0.045 max |
0.035 max |
19.0-23.0 |
23.0-28.0 |
4.0-5.0 |
1.0-2.0 |
Mechanical Properties of 904L Pipe Fittings
These properties demonstrate the material's ability to withstand operational pressures and physical stresses without failure.
|
Property |
Value |
|---|---|
|
Tensile Strength (min) |
71 ksi (490 MPa) |
|
Yield Strength (min) |
32 ksi (220 MPa) |
|
Elongation in 2" (min) |
35% |
|
Hardness (max) |
90 HRB |
Heat Treatment & Tolerances of 904L Pipe Fittings
The final quality and reliability of a pipe fitting are heavily influenced by the heat treatment process and adherence to dimensional tolerances.
Heat Treatment Requirements of 904L Pipe Fittings
All our 904L Pipe Fittings are supplied in a fully solution-annealed condition. This heat treatment involves heating the fittings to a temperature of 1090°C to 1175°C (1995°F to 2145°F), followed by rapid quenching. This critical process ensures that all carbides are dissolved into the matrix, maximizing the material's corrosion resistance and restoring its toughness and ductility.
Dimensional Tolerances of 904L Pipe Fittings
A precise fit is essential for the integrity of any piping system. We manufacture our fittings to the strict dimensional tolerances of ASME B16.9 (for buttweld fittings) and ASME B16.11 (for forged fittings). This guarantees that every dimension is accurate, allowing for easy installation and a reliable, leak-free connection.
Types & Forms of 904L Pipe Fittings
As a leading manufacturer, Amardeep Steel Center produces a comprehensive range of SS 904L Pipe Fittings to meet any project specification
- Elbows (45°, 90°, 180°): To make smooth directional changes in pipelines.
- Tees (Equal & Reducing): For creating 90-degree branches from a main line.
- Reducers (Concentric & Eccentric): For connecting pipes of two different diameters.
- Caps: To provide a secure and permanent seal at the end of a pipe.
- Stub Ends: Used with lap joint flanges to create an economical flanged connection.
- Pipe Bends: Custom-fabricated bends with larger radii for gradual turns.
- Couplings, Nipples, and Crosses: A full suite of components for any connection need.
Applications & Industries Served of 904L Pipe Fittings
The exceptional corrosion resistance of SS 904L corrosion resistant fittings makes them essential for industries handling highly aggressive media:
- Chemical Processing: For equipment handling sulfuric, phosphoric, and acetic acids.
- Pulp and Paper: In bleaching equipment and other corrosive process areas.
- Oil and Gas: For offshore platforms and equipment handling sour gas.
- Pharmaceuticals: In reactors and piping systems where product purity and corrosion resistance are critical.
- Mining and Metal Processing: For acid leaching and electrowinning equipment.
- Seawater Handling: In heat exchangers, cooling pipes, and desalination plants.
Why Choose Amardeep Steel for 904L Pipe Fittings?
When you choose Amardeep Steel, you are selecting a supplier that is fully committed to quality, reliability, and customer satisfaction. Here’s why we are the right partner for you:
- Manufacturing Excellence: Our in-house manufacturing gives us complete control over the production process, from raw material to the finished product. This guarantees consistent wall thickness, a superior surface finish, and adherence to the strictest quality standards.
- Global Exports: As a trusted exporter, we have a proven track record of serving customers in major international markets, including the USA, Canada, UAE, Saudi Arabia, Europe, and Southeast Asia. Our expert logistics team ensures timely and secure delivery.
- Fast Turnaround: We maintain a large stock of standard 904L Pipe Fittings, ready for immediate shipment. This allows us to meet urgent requirements and keep your projects on track.
- Certified Quality: Quality is not just a promise; it's our guarantee. We are an ISO 9001:2015 certified company, and all our fittings are supplied with a Mill Test Certificate (MTC) as per EN 10204 3.1. We also facilitate third-party inspections from reputable agencies like TUV, DNV, and Lloyd’s.
- Technical Support: Our team of expert metallurgists and engineers is available 24/7 to provide technical assistance. Whether you need guidance on material selection or application-specific designs, we are here to help you find the perfect solution.
Related Products
Get Your 904L Pipe Fittings Price
Ready to order your 904L Pipe Fittings? Get a competitive price from an industry leader you can depend on. Contact our sales team today for a fast, no-obligation quote and let us supply the high-performance fittings your project needs.
Frequently Asked Questions (FAQ's)
1. What makes 904L superior to 316L and 317L?
The superiority of 904L comes from its significantly higher content of nickel and molybdenum, plus the addition of copper. This rich alloy composition gives Stainless Steel 904L Fittings a much higher resistance to a broader range of acids, especially sulfuric acid, and makes it virtually immune to chloride stress corrosion cracking, a weakness in the 300 series.
2. Is 904L a difficult material to weld?
No, 904L is readily weldable using common welding methods. It has a low carbon content, which minimizes the risk of carbide precipitation during welding, so a post-weld heat treatment is generally not required.
3. Is 904L magnetic?
No, 904L is a fully austenitic stainless steel and is non-magnetic in the annealed condition. It will remain non-magnetic even after significant cold working.
4. What certifications do you provide with the fittings?
We supply a Mill Test Certificate (MTC) in accordance with EN 10204 3.1 with every order. This certificate provides full traceability and documents the material's precise chemical composition and mechanical properties, confirming that it meets all required standards.
5. How quickly can I receive my order?
For standard sizes and types in our inventory, we can typically dispatch your order within 24 to 48 hours. For custom or large-volume orders, we will provide a specific delivery schedule with your quote. Our efficient manufacturing processes ensure we can meet even the most demanding project timelines.
