SS 904L Flanges are high alloy austenitic stainless steel pipe flanges made from low carbon grade 904L stainless steel which has good resistance to corrosion, pitting, crevice corrosion and acidic environment. These flanges are used in large scale in chemical processing, marine engineering, pharmaceuticals, oil & gas, heat exchangers and power generation industries. These include SS 904L Slip-On Flanges, 904L Weld Neck Flanges, Alloy 904L Blind Flange, DIN 1.4539 Ring Type Joint Flanges, ASTM A182 F904L Slip On Flanges in ANSI, ASME, DIN and EN standards.
Best Quality SS 904L Flanges for Industrial Piping Systems
We are a trusted manufacturer and exporter of premium quality SS 904L Flanges, designed for critical industrial applications that require superior corrosion resistance and long-term durability. Our flanges are produced through sophisticated forging and machining processes to meet international standards like ASTM, ASME, ANSI, DIN and EN specifications.
Our range includes SS 904L Plate Flange, Alloy 904L Blind Flange, ASME SA182 SS 904L WNRF Flanges, SS DIN 1.4539 Nippo Flanges and ANSI SS 904L Lap Joint Flange for high pressure and high temperature environment. These flanges are broadly used in offshore platforms, petrochemical plants, desalinization plants, and severe chloride processing systems.
904L stainless steel is low in carbon content and high in nickel-molybdenum content, providing excellent resistance to sulfuric acid, seawater corrosion and stress corrosion cracking. Because of these properties 904L stainless steel Forged Flanges are favored in critical process industries where the use of regular stainless steel grades can be a failure.
What are SS 904L Flanges?
SS 904L Flanges are pipe connection parts manufactured from UNS N08904 stainless steel material which is either forged or plate type. Its high chromium, nickel, molybdenum and copper content make it a super-austenitic stainless steel which has high resistance to chloride attacks and reducing acids.
These flanges are used to securely connect pipes, valves, pumps and pressure vessels in a piping system. UNS N08904 Flanges are widely used in severe service applications because of their good mechanical strength and corrosion resistance.
The material is also known under a number of international designations, such as:
- AISI 904L Flanges
- SS EN X1NiCrMoCu25-20-5 Pipe Flanges
- DIN 1.4539 Ring Type Joint Flanges
- ASTM A182 F904L Slip On Flanges
Table of Contents
- ➤ What are SS 904L Flanges?
- ➤ Advantages of 904L Stainless Steel Forged Flanges
- ➤ Types of SS 904L Flanges We Offer
- ➤ SS 904L Flanges Specifications
- ➤ Chemical Composition of ASTM A182 F904L Flanges
- ➤ Mechanical Properties of SS 904L Flanges
- ➤ Applications of SS 904L Flanges
- ➤ PN16 DN65 DN80 SS 904L Plate Flange Price List
- ➤ Why Choose Us for SS 904L Flanges?
Advantages of 904L Stainless Steel Forged Flanges
- Corrosion Resistant: The high nickel and molybdenum content provide outstanding resistance against chloride corrosion and acidic media.
- Superior Weldability: ASTM A182 F904L Slip On Flanges and weld neck flanges can be easily welded using conventional welding methods.
- High Strength at Elevated Temperatures: These flanges maintain structural integrity even in extreme pressure and temperature conditions.
- Long Service Life: This material resists pitting, oxidation and crevice corrosion, leading to reduced maintenance costs.
- Excellent Fabrication Properties: AISI 904L Flanges can be machined and fabricated efficiently for customized industrial applications.
Types of SS 904L Flanges We Offer
We manufacture and supply complete range of stainless steel flanges in different pressure classes, facing types and dimensional standards.
➤ 904L Weld Neck Flanges
904L Weld Neck Flanges are designed with a long tapered hub that provides reinforcement and reduces stress concentration in high-pressure applications. These flanges are ideal for extreme temperatures and cyclic loading systems.
➤ SS 904L Slip-On Flanges
Our SS 904L Slip-On Flanges are easy to install and cost-effective for low to medium pressure piping systems. They are widely used in chemical plants and water treatment systems.
➤ Alloy 904L Blind Flange
We are a renowned Manufacturer of Alloy 904L Blind Flange products that are used to securely seal piping systems and openings in pressure vessels. They are very resistant to aggressive chemicals.
➤ SS 904L Plate Flange
SS 904L Plate Flange products are manufactured from precision-cut plates and used for low-pressure industrial applications requiring corrosion-resistant performance.
➤ ANSI SS 904L Lap Joint Flange
The ANSI SS 904L Lap Joint Flange is preferred in systems requiring frequent dismantling for cleaning and inspection. These flanges are compatible with stub-end connections.
➤ DIN 1.4539 Ring Type Joint Flanges
Our DIN 1.4539 Ring Type Joint Flanges are designed for high-pressure sealing applications in refinery and offshore industries where leak-proof joints are essential.
➤ SS DIN 1.4539 Nippo Flanges
We also manufacture DIN 1.4539 Nippo Flanges for specialized branch connection applications used in industrial piping systems.
SS 904L Flanges Specifications
| Specification | Details |
|---|---|
| Product | SS 904L Flanges |
| Material Grade | Stainless Steel 904L |
| UNS Number | UNS N08904 |
| DIN Number | DIN 1.4539 |
| Standard | ASTM A182 / ASME SA182 |
| Types | Weld Neck, Slip-On, Blind, RTJ, Lap Joint, Plate, Socket Weld, Threaded |
| Pressure Class | 150#, 300#, 600#, 900#, 1500#, 2500# |
| Size Range | ½” NB to 48” NB |
| Flange Facing | RF, FF, RTJ |
| Standards | ANSI, ASME, DIN, EN, BS |
| Manufacturing Method | Forged, Machined, Heat Treated |
| Origin | India |
Chemical Composition of ASTM A182 F904L Flanges
| Element | Composition (%) |
|---|---|
| Chromium | 19.0 – 23.0 |
| Nickel | 23.0 – 28.0 |
| Molybdenum | 4.0 – 5.0 |
| Copper | 1.0 – 2.0 |
| Carbon | Max 0.02 |
| Manganese | Max 2.0 |
| Silicon | Max 1.0 |
| Phosphorus | Max 0.045 |
| Sulfur | Max 0.035 |
Mechanical Properties of SS 904L Flanges
| Property | Value |
|---|---|
| Tensile Strength | 490 MPa Min |
| Yield Strength | 220 MPa Min |
| Elongation | 35% Min |
| Hardness | 70 HRB Max |
| Density | 8.0 g/cm³ |
| Melting Point | 1300 – 1390°C |
PN16 DN65 DN80 SS 904L Plate Flange Price List
Flange price depends on the price of raw materials, size of the flange, pressure rating, machining requirements, and size of the order. We offer competitive rates for PN16 DN65 DN80 SS 904L Plate Flange Price List requirements for domestic and international buyers.
| Product Type | Price Influence Factors |
|---|---|
| Slip On Flanges | Size, pressure rating |
| Blind Flanges | Thickness, machining |
| Weld Neck Flanges | Hub dimensions, forging |
| RTJ Flanges | Groove precision |
| Plate Flanges | Thickness of plate, finish |
Updated PN16 DN65 DN80 SS 904L Plate Flange Price List. Call our sales team for custom quotes and bulk order discounts.
Applications of SS 904L Flanges
Our Stainless Steel 904L Flanges Exporter solutions is widely used in:
- Chemical Processing Facilities
- Petrochemical Plants
- Medical Equipment
- Offshore Oil and Gas Rigs
- Heat Exchangers Desalination Plants
- Desalination Plants
- Marine Engineering
- Power Generation Facilities
- Fertilizer Industries
- Pulp & Paper Industries
Related Stainless Steel Flanges
We also supply:
- Stainless Steel Pipe Fittings
- ASTM A182 F1 Flanges
- Stainless Steel 446 Flanges
- Stainless Steel 321 Flanges
- Nickel Alloy Flanges
Why Choose Us for SS 904L Flanges?
- Precision Machining: We employ advanced forging, CNC machining & testing methods to guarantee dimensional accuracy and superior quality of the products.
- International Standards of Quality: All products are manufactured according to ASTM, ASME, ANSI, DIN and EN standards.
- Third-Party Inspection: Certification of inspection and testing EN 10204 3.1. PMI testing, Hydro Testing, Dimensional Inspection.
- International Export Capacity: Being a reliable Stainless Steel 904L Flanges Exporter, we supply products to Middle East, Europe, Asia, Africa and North America.
- Tailored Solutions: We provide flanges in customized sizes, pressure ratings and material specifications as per the project needs.
If you are looking for reliable SS 904L Pipes, we are your trusted partner. As one of the leading Stainless Steel 904L Pipe Suppliers in India, we ensure premium quality, competitive pricing, and timely delivery.
Whether you need SS ASTM A312 TP904L Pipes or customized solutions, we are here to support your project with precision and expertise.
Frequently Asked Questions
Request Your Stainless Steel 904L Flanges Quote Today!
