Stainless Steel 446 Flanges: High-Performance Solutions for Diverse Applications
Welcome to ASC LLP, your premier source for high-quality stainless steel flanges. In this guide, we’ll delve into the specifics of Stainless Steel 446 Flanges—what they are, their properties, and the advantages they offer across various industries.
What Are Stainless Steel 446 Flanges?
446 Stainless Steel Flanges are components used in piping systems to connect pipes, valves, pumps, and other equipment. Made from Grade 446 stainless steel, these flanges are designed to provide a robust and reliable connection in high-temperature and corrosive environments. The composition and properties of 446 stainless steel make these flanges an ideal choice for applications that demand high heat resistance and excellent corrosion resistance.

446 Stainless Steel Flanges Properties
- High Temperature Resistance: 446 stainless steel can withstand temperatures up to 1100°C (2012°F) without significant loss of strength. This makes it suitable for high-temperature applications where other materials might fail.
- Corrosion Resistance: With its high chromium content, 446 stainless steel offers excellent resistance to oxidation and corrosion. It performs well in harsh environments, including those involving sulfur compounds and saltwater.
- Thermal Conductivity: This grade of stainless steel has good thermal conductivity, making it effective in applications that involve heat transfer.
- Durability: 446 stainless steel flanges are highly durable and resistant to wear and tear, ensuring a long service life even under demanding conditions.
- Strength: Although 446 stainless steel is not as strong as some other high-alloyed steels, its combination of chromium and low carbon provides adequate strength for many industrial applications.
Advantages of 446 Stainless Steel Flanges
- Enhanced Performance in High Temperatures: One of the main advantages of using 446 stainless steel flanges is their ability to maintain structural integrity at elevated temperatures. This property makes them ideal for use in furnace applications, heat exchangers, and other high-heat environments.
- Superior Corrosion Resistance: The high chromium content in 446 stainless steel ensures that the flanges resist oxidation and corrosion, even in challenging environments like those found in chemical processing or marine applications. This resistance extends the lifespan of the flanges and reduces maintenance costs.
- Reduced Scaling and Oxidation: 446 stainless steel’s resistance to scaling and oxidation at high temperatures means that it performs well in applications where other materials might degrade quickly.
- Cost-Effectiveness: While 446 SS flanges offer superior performance in specific applications, they are often more cost-effective than other high-performance alloys. This balance between performance and cost makes them a practical choice for many industries.
- Versatility: The properties of 446 SS flanges make them suitable for a wide range of applications, from industrial furnaces and heat exchangers to chemical processing plants and marine environments.
- Ease of Maintenance: The corrosion resistance and durability of 446 SS flanges reduce the need for frequent replacements and repairs, resulting in lower long-term maintenance costs.


Schedule and Size Chart
Nominal Pipe Size (NPS) | Schedule | Flange Diameter (Inches) | Bolt Circle Diameter (Inches) | Number of Bolts | Bolt Size (Inches) | Thickness (Inches) |
1/2 | SCH 40 | 3.3 | 2.6 | 4 | 0.5 | 0.5 |
1 | SCH 40 | 4.0 | 3.2 | 4 | 0.75 | 0.5 |
2 | SCH 40 | 6.0 | 5.2 | 4 | 1.0 | 0.625 |
4 | SCH 40 | 9.5 | 8.0 | 8 | 1.25 | 0.75 |
6 | SCH 40 | 11.0 | 10.5 | 8 | 1.5 | 0.875 |
Mechanical Properties Chart
Property | Value |
Tensile Strength | 250 MPa (36,000 psi) |
Yield Strength | 150 MPa (22,000 psi) |
Elongation | 20% |
Hardness (Brinell) | 230 HB |
Modulus of Elasticity | 200 GPa (29,000 ksi) |
Impact Toughness | 40 J at -50°C |
Specifications Chart
Specification | Standard |
Material | Stainless Steel 446 |
Flange Type | Slip-On, Weld Neck, Blind, Lap Joint, Socket Weld |
Finish | Raised Face, Flat Face, Ring-Type Joint |
Pressure Class | 150, 300, 600, 900, 1500, 2500 |
Face Type | RF (Raised Face), FF (Flat Face) |
Chemical Composition Chart
Element | % Composition |
Chromium (Cr) | 24.0 – 27.0 |
Nickel (Ni) | 0.75 max |
Molybdenum (Mo) | 0.75 max |
Carbon (C) | 0.20 max |
Manganese (Mn) | 1.00 max |
Silicon (Si) | 1.00 max |
Phosphorus (P) | 0.040 max |
Sulfur (S) | 0.030 max |
Physical Properties Chart
Property | Value |
Density | 7.7 g/cm³ |
Melting Point | 1490°C (2700°F) |
Thermal Conductivity | 23 W/m·K |
Specific Heat Capacity | 0.46 J/g·K |
Electrical Resistivity | 0.72 μΩ·m |
Coefficient of Thermal Expansion | 11.6 × 10⁻⁶ /°C |
Application Chart
Application | Description |
Furnace Components | Used in high-temperature furnaces due to excellent heat resistance. |
Heat Exchangers | Effective in transferring heat in industrial processes. |
Chemical Processing | Resists corrosion in aggressive chemical environments. |
Marine Applications | Withstands exposure to saltwater and other corrosive environments. |
Petrochemical Industry | Handles high-temperature and corrosive fluids. |
Industrial Boilers | Suitable for high-pressure and high-temperature boiler systems. |
Benefits of Partnering with Us:
At ASC LLP, we pride ourselves on providing top-quality stainless steel flanges that meet the highest industry standards. Our 446 stainless steel flanges are sourced from reputable manufacturers and undergo rigorous quality control to ensure they meet the specifications required for your application.
- High-Quality Products: Our flanges are made from premium 446 stainless steel, ensuring exceptional performance and reliability.
- Expertise and Experience: With years of experience in the industry, we offer expert advice and support to help you choose the right flanges for your needs.
- Custom Solutions: We provide customized flange solutions to meet specific project requirements and ensure optimal performance.
- Competitive Pricing: We offer competitive pricing without compromising on quality, making our products a cost-effective choice for your projects.
- Reliable Delivery: We understand the importance of timely delivery and strive to ensure that your order arrives on schedule, every time.
SS 446 Flanges are a superior choice for high-temperature and corrosive environments, offering excellent performance, durability, and cost-effectiveness. At ASC LLP, we are committed to providing high-quality flanges that meet your specific needs. For more information on our 446 SS flanges or to place an order, please contact us today. Our team is ready to assist you in finding the perfect solution for your application.
Global Reach
Amardeep Steel Centre boasts a robust global presence, committed to delivering unparalleled service and quality to clients around the world. Our dedication to prompt delivery and exceptional customer care sets us apart in the industry. Major corporations across the USA, Europe, Asia, and other regions place their trust in our high-quality Stainless Steel 446 Flanges. This widespread trust underscores our reputation for reliability and excellence. By consistently meeting and exceeding the expectations of our international clientele, we continue to solidify our position as a leader in the global steel market.

Countries We Export To
UNITED STATES, EUROPE, UK, UAE, SAUDI ARABIA, OMAN, KUWAIT, JORDAN, QATAR, INDONESIA, MALAYSIA, BRAZIL, SPAIN, ITALY, FRANCE, GERMANY, BAHRAIN, SRI LANKA, AZERBAIJAN, AUSTRALIA, AUSTRIA, PHILIPPINES, TURKEY, RUSSIA, IRAN, IRAQ, CANADA, KOREA, JAPAN, YEMEN, FINLAND, ZIMBABWE, HUNGARY, PORTUGAL, VIETNAM, MOROCCO, THAILAND, SOUTH AFRICA, MEXICO, SINGAPORE, GREECE, KUWAIT, POLAND, NEW ZEALAND, SWEDEN, SWITZERLAND, BELGIUM, BHUTAN, BANGLADESH, TAIWAN, ROMANIA, CAMBODIA, KAZAKHSTAN, AFGHANISTAN.