What are Stainless Steel 446 Flanges?
Stainless Steel 446 Flanges are high-temperature resistant pipe flanges manufactured from ferritic stainless steel with high chromium content (23–27%). These flanges are used to connect pipes, valves, pumps, and equipment in industrial piping systems while providing excellent resistance to oxidation, scaling, and corrosion at elevated temperatures.
Because of their heat resistance, SS 446 flanges are widely used in furnace equipment, petrochemical plants, power generation systems, and heat treatment industries.
Common types include:
- SS 446 Slip On Flange
- ASTM A182 SS 446 Weldneck Flange
- SS 446 RTJ Flange
- ASME SA182 SS 446 Socketweld Flange
- 446 SS Threaded Flange
- DIN 1.4762 Lap Joint Flange
Stainless Steel 446 Flanges
In high-temperature industrial systems, piping components must withstand extreme heat, oxidation, and mechanical stress. Stainless Steel 446 Flanges are specially designed to meet these demanding conditions.
Made from UNS S44600 stainless steel, these flanges contain high chromium levels that provide excellent oxidation resistance at temperatures above 1000°C.
We manufacture and supply a wide range of SS 446 flanges including:
- SS 446 Slip On Flange
- ASTM A182 SS 446 Weldneck Flange
- 446 SS Threaded Flange
- SS 446 RTJ Flange
- ASME SA182 SS 446 Socketweld Flange
- DIN 1.4762 Lap Joint Flange
As a trusted ASTM A182 F446 flanges manufacturer in India, we ensure that all products meet international quality standards and deliver long service life in demanding industrial environments.
Advantages of Stainless Steel 446 Flanges
- Excellent High Temperature Resistance: SS 446 flanges maintain structural stability at extremely high temperatures.
- Oxidation Resistance: The high chromium content provides excellent protection against oxidation and scaling.
- Long Service Life: These flanges last longer than many conventional stainless steel grades.
- Good Mechanical Strength: They maintain strength even in demanding environments.
- Reliable Corrosion Resistance: SS 446 flanges perform well in various industrial conditions.
Types of Stainless Steel 446 Flanges
Different flange designs are used depending on piping requirements.
➤ SS 446 Slip On Flange
The SS 446 Slip On Flange slides over the pipe and is welded internally and externally. These flanges are easy to install and commonly used in low to medium pressure systems.
➤ ASTM A182 SS 446 Weldneck Flange
The ASTM A182 SS 446 Weldneck Flange has a long tapered hub that reduces stress concentration. It is widely used in high-pressure and high-temperature pipelines.
➤ SS 446 RTJ Flange
SS 446 RTJ Flange (Ring Type Joint) is designed for high pressure systems. A metal ring gasket ensures leak-proof sealing between the flanges.
➤ ASME SA182 SS 446 Socketweld Flange
The ASME SA182 SS 446 Socketweld Flange is used for smaller diameter pipelines. The pipe is inserted into the flange socket and welded for strong connection.
➤ 446 SS Threaded Flange
446 SS Threaded Flange allows pipe connection without welding. It is commonly used in low pressure applications.
➤ DIN 1.4762 Flat Flange
The DIN 1.4762 Flat Flange provides a simple and economical pipe connection.
➤ DIN 1.4762 Lap Joint Flange
DIN 1.4762 Lap Joint Flange is used with a stub end and allows easy alignment during installation.
➤ 446 SS Reducing Flange
The 446 SS Reducing Flange connects pipes of different sizes.
➤ 446 SS SORF Flange
The 446 SS SORF Flange (Slip-On Raised Face) provides improved sealing performance.
➤ UNS S44600 Square Flange
UNS S44600 Square Flange is commonly used in structural and equipment connections.
Stainless Steel 446 Flanges Specifications
| Specification | Details |
|---|---|
| Material Grade | Stainless Steel 446 |
| UNS Number | UNS S44600 |
| DIN Grade | DIN 1.4762 |
| Standard | ASTM A182 / ASME SA182 |
| Pressure Class | 150 – 2500 |
| Size Range | ½” – 48” |
| Flange Facing | RF, FF, RTJ |
Stainless Steel 446 Chemical Composition
| Element | Percentage |
|---|---|
| Chromium | 23 – 27 |
| Carbon | ≤0.20 |
| Silicon | ≤1.0 |
| Manganese | ≤1.5 |
| Phosphorus | ≤0.04 |
| Sulfur | ≤0.03 |
Mechanical Properties of ASTM A182 F446 Flanges
| Property | Value |
|---|---|
| Tensile Strength | 415 MPa |
| Yield Strength | 275 MPa |
| Elongation | 20% |
Applications of SS 446 Flanges
Industries using Stainless Steel 446 Flanges include:
- Furnace Manufacturing: The material performs well in high-temperature furnace environments.
- Petrochemical Industry: Used in pipelines carrying hot gases and chemicals.
- Power Generation Plants: High temperature resistance makes these flanges suitable for power plants.
- Chemical Processing Industry: Used in corrosive chemical handling systems.
- Oil and Gas Industry: Used in high-temperature pipelines and processing equipment.
Related Stainless Steel Flanges
We also supply:
- Stainless Steel 304 Flanges
- Stainless Steel 316 Flanges
- Stainless Steel 321 Flanges
- Stainless Steel 347 Flanges
- Stainless Steel 904L Flanges
Why Choose Our Stainless Steel 446 Flanges?
- Large ready stock
- Strict quality inspection
- Competitive pricing
- Fast delivery worldwide
- Technical support for flange selection
As an experienced 446 stainless steel flanges stockist in India, we supply flanges that meet international standards and industrial requirements.
Request a Quote for Stainless Steel 446 Flanges
If you are looking for ASTM A182 Stainless Steel 446 Flanges Suppliers, we can provide:
- SS 446 SO flanges
- SS 446 weld neck flanges
- SS 446 RTJ flanges
- DIN 1.4762 flat flanges
- ASME SA182 SS 446 socket weld flanges
Frequently Asked Questions
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