022 66393751
Stainless Steel 904L Flanges are high-performance, super austenitic stainless steel flanges designed for extreme corrosion resistance in aggressive environments. This low-carbon, high-alloy stainless steel contains nickel, chromium, molybdenum, and copper, providing exceptional resistance to acids, pitting, and stress corrosion cracking.
Due to their superior corrosion resistance, SS 904L flanges are widely used in chemical processing, seawater applications, and pharmaceutical industries, where standard stainless steel grades may fail.
Why Choose Stainless Steel 904L Flanges?
Exceptional Corrosion Resistance
SS 904L flanges offer outstanding resistance to sulfuric acid, phosphoric acid, and chloride-induced pitting corrosion, making them ideal for marine and chemical industries.
Superior Strength & Durability
These flanges have high tensile and yield strength, ensuring durability and long service life, even in high-temperature and high-pressure conditions.
Low Carbon Content – Excellent Weldability
With low carbon levels, SS 904L prevents carbide precipitation, making it ideal for welding applications without post-weld heat treatment.
Non-Magnetic in Annealed Condition
Unlike standard stainless steels, SS 904L is non-magnetic, making it suitable for applications requiring low magnetic permeability.
Stainless Steel 904L Flanges Manufacturer in India
As a trusted Stainless Steel 904L Flanges Manufacturer in India, we offer:
Precision-engineered SS 904L flanges in various sizes & pressure ratings.
Custom manufacturing to meet specific industrial needs.
Third-party testing & certifications for superior quality assurance.
Fast global export & timely delivery services.
Applications of Stainless Steel 904L Flanges
SS 904L flanges are used in industries that demand superior corrosion resistance and durability:
Chemical Processing Plants – Resistant to acidic and corrosive chemicals.
Marine & Offshore Applications – Excellent seawater and brine resistance.
Petrochemical & Refining Industry – Handles high temperatures and aggressive fluids.
Pharmaceutical & Food Processing – Ensures hygienic and contamination-free operations.
Power Generation & Desalination Plants – Withstands harsh environmental conditions.
Key Features of Stainless Steel 904L Flanges
Superior resistance to acids, pitting, and crevice corrosion.
High tensile strength and durability in harsh conditions.
Excellent formability, weldability, and machinability.
Non-magnetic nature, making it suitable for sensitive applications.
Long service life with minimal maintenance costs.
Specifications of Stainless Steel 904L Flanges
Specification | Details |
Material Grade | Stainless Steel 904L (Super Austenitic SS) |
Standard | ASTM A182 / ASME SA182 |
Size Range | ½” to 48” (DN15 to DN1200) |
Pressure Ratings | 150#, 300#, 600#, 900#, 1500#, 2500# |
Face Type | RF (Raised Face), FF (Flat Face), RTJ (Ring Type Joint) |
Types | Slip-On, Weld Neck, Blind, Threaded, Socket Weld, Lap Joint, Orifice, Expander, Reducing |
Connection Type | Bolted, Welded, Threaded |
Temperature Resistance | High-temperature applications up to 450°C |
Corrosion Resistance | Superior resistance to acids, chlorides, and oxidation |
Chemical Composition of Stainless Steel 904L Flanges
Element | Composition (%) |
Carbon (C) | 0.02 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 |
Mechanical Properties of Stainless Steel 904L Flanges
Property | Value |
Tensile Strength | 490 MPa (min) |
Yield Strength | 220 MPa (min) |
Elongation | 35% (min) |
Hardness (Brinell) | 223 max |
Hardness (Rockwell B) | 90 max |
Stainless Steel 904L Flanges Export Destinations
Region | Countries |
Middle East | Saudi Arabia, UAE, Qatar, Oman, Kuwait, Turkey, Iran, Iraq, Bahrain, Israel, Jordan |
Asia | India, Singapore, Malaysia, Thailand, South Korea, Japan, Vietnam, Indonesia, Sri Lanka |
South America | Argentina, Brazil, Chile, Colombia, Venezuela, Ecuador |
North America | USA, Canada, Mexico, Panama, Costa Rica |
Europe | UK, Germany, France, Italy, Spain, Netherlands, Russia, Greece, Portugal, Ukraine |
Africa | Nigeria, South Africa, Egypt, Algeria, Libya, Sudan |
Stainless Steel 904L Flanges Supply in Indian States & Cities
State | Major Cities |
Maharashtra | Mumbai, Pune, Nashik, Nagpur |
Gujarat | Ahmedabad, Surat, Rajkot, Vadodara |
Tamil Nadu | Chennai |
Telangana | Hyderabad |
Karnataka | Bengaluru |
West Bengal | Kolkata |
Uttar Pradesh | Kanpur, Noida, Ghaziabad |
Andhra Pradesh | Vishakhapatnam, Vijayawada |
Union Territories | Delhi, Chandigarh |
Buy High-Quality Stainless Steel 904L Flanges in India
Looking for premium-quality SS 904L Flanges? We provide top-grade flanges with certified quality, corrosion resistance, and durability. Contact us today for competitive pricing and bulk orders!
1. What is Stainless Steel 904L, and why is it used for flanges?
Stainless Steel 904L is a super austenitic stainless steel with high nickel and molybdenum content, making it highly resistant to corrosion, especially in harsh environments like acidic and chloride-rich conditions. It is used for flanges due to its excellent strength, durability, and resistance to pitting and crevice corrosion.
2. What are the main applications of SS 904L flanges?
SS 904L flanges are widely used in industries such as chemical processing, marine, oil & gas, pharmaceuticals, power plants, and heat exchangers, where superior corrosion resistance is required.
3. How does SS 904L compare to other stainless steel grades like 316L or 317L?
SS 904L has higher nickel and molybdenum content than 316L and 317L, providing better corrosion resistance, particularly in highly acidic environments (e.g., sulfuric acid). However, it is more expensive and sometimes considered over-specified for standard applications.
4. What are the available types of SS 904L flanges?
Common types of Stainless Steel 904L flanges include Slip-On, Weld Neck, Blind, Socket Weld, Threaded, Lap Joint, and Orifice flanges. Each type serves different piping connection needs.
5. What are the key benefits of using SS 904L flanges?
The key benefits include:
- Excellent corrosion resistance in acidic and chloride-rich environments
- High strength and durability
- Good weldability and formability
- Long service life, reducing maintenance costs
- Resistance to pitting, crevice corrosion, and stress corrosion cracking