Stainless Steel 309H Fittings – An In-depth Guide by Amardeep Steel Centre LLP
Welcome to Amardeep Steel Centre LLP, your trusted partner in high-quality stainless steel solutions. We pride ourselves on delivering exceptional products, and one of our standout offerings is the stainless steel 309H fittings. Designed for superior performance in high-temperature applications, these fittings are an integral part of numerous industrial systems. In this comprehensive guide, we will explore everything you need to know about 309H stainless steel fittings, from their material composition and properties to their wide range of applications.
What is 309H Stainless Steel Fittings?
309H stainless steel fittings are a type of high-temperature resistant fittings made from 309H stainless steel, a highly alloyed austenitic stainless steel known for its superior resistance to oxidation and corrosion. The “H” in 309H indicates a higher carbon content compared to its counterpart 309, which enhances its creep strength and stability at elevated temperatures.
These fittings are essential components used to connect pipes, valves, and other equipment in industrial systems. They are widely used in environments where exposure to extreme heat and corrosive conditions is common, making them a popular choice in industries such as petrochemicals, power generation, and heat treatment.
Properties of 309H Stainless Steel Fittings
309H stainless steel fittings possess several key properties that make them ideal for demanding industrial applications:
- High-Temperature Resistance: One of the most significant properties of SS 309H fittings is their ability to withstand high temperatures. With a higher carbon content, 309H offers better creep resistance and tensile strength at elevated temperatures compared to standard 309 fittings.
- Excellent Corrosion Resistance: These fittings exhibit excellent resistance to oxidation and corrosion, even in environments with high sulfur content or under reducing conditions. This makes them suitable for applications where exposure to corrosive substances is a concern.
- Durability and Strength: The 309H grade stainless steel fittings are known for their durability and mechanical strength, making them reliable components in high-stress environments. Their ability to maintain structural integrity under extreme conditions ensures long-lasting performance.
- Good Weldability: SS 309H fittings can be easily welded using standard welding methods, allowing for seamless integration into existing systems. This makes them versatile and convenient for use in various industrial settings.
- Thermal Stability: The high carbon content in 309H stainless steel enhances its thermal stability, ensuring that the fittings remain stable and retain their mechanical properties even at temperatures as high as 1100°C (2012°F).
Advantages of Choosing 309H Stainless Steel Fittings
At Amardeep Steel Centre LLP, we are committed to providing high-quality 309H stainless steel fittings that meet the stringent demands of our clients. Here are some of the advantages of choosing our products:
- Premium Quality Material: We source our 309H stainless steel from reputable suppliers to ensure that our fittings meet international quality standards. This guarantees that our products perform reliably in even the most demanding applications.
- Customization Options: We understand that different projects have unique requirements, which is why we offer customization options for our stainless steel 309H fittings. Whether you need specific dimensions, shapes, or configurations, we can tailor our fittings to suit your needs.
- Comprehensive Product Range: Our product range includes a wide variety of SS 309H fittings, such as elbows, tees, reducers, caps, and more. This allows us to provide complete solutions for your piping and fitting needs.
- Expert Technical Support: Our team of experts is always available to provide technical support and guidance. Whether you need help selecting the right fittings for your application or require assistance with installation, we are here to help.
- Competitive Pricing: At Amardeep Steel Centre LLP, we offer competitive pricing without compromising on quality. We believe in delivering value to our customers, ensuring that you get the best possible return on your investment.
Schedule and Size Chart
| Nominal Pipe Size (NPS) | Outside Diameter (OD) (inches) | Schedule 10 (inches) | Schedule 40 (inches) | Schedule 80 (inches) |
| 1/2″ | 0.840 | 0.109 | 0.147 | 0.188 |
| 3/4″ | 1.050 | 0.113 | 0.154 | 0.218 |
| 1″ | 1.315 | 0.133 | 0.179 | 0.250 |
| 1 1/2″ | 1.900 | 0.145 | 0.200 | 0.281 |
| 2″ | 2.375 | 0.154 | 0.218 | 0.344 |
| 2 1/2″ | 2.875 | 0.203 | 0.276 | 0.375 |
| 3″ | 3.500 | 0.216 | 0.300 | 0.438 |
| 4″ | 4.500 | 0.237 | 0.337 | 0.531 |
| 6″ | 6.625 | 0.280 | 0.432 | 0.718 |
| 8″ | 8.625 | 0.322 | 0.500 | 0.906 |
Mechanical Properties Chart
| Property | Value |
| Tensile Strength (MPa) | 585 MPa (min) |
| Yield Strength (0.2% Proof) | 310 MPa (min) |
| Elongation (% in 50mm) | 40% (min) |
| Hardness (Rockwell B) | 95 HRB (max) |
| Modulus of Elasticity | 200 GPa |
| Density | 7.89 g/cm³ |
Specifications Chart
| Standard | Specification |
| ASTM | A403 (for Fittings) |
| ASME | SA403 (for Fittings) |
| DIN | 1.4833 (X12CrNi23-13) |
| EN | 10088-2 (X12CrNi23-13) |
| UNS | S30909 |
Chemical Composition Chart
| Element | Composition (%) |
| Chromium (Cr) | 22.0 – 24.0 |
| Nickel (Ni) | 12.0 – 15.0 |
| Carbon (C) | 0.04 – 0.10 |
| Manganese (Mn) | 2.00 (max) |
| Silicon (Si) | 1.00 (max) |
| Phosphorus (P) | 0.045 (max) |
| Sulfur (S) | 0.030 (max) |
| Iron (Fe) | Balance |
Physical Properties Chart
| Property | Value |
| Density | 7.89 g/cm³ |
| Melting Point | 1350 – 1400 °C |
| Thermal Conductivity at 100°C | 15.9 W/m.K |
| Thermal Expansion | 14.9 x 10^-6 /K |
| Specific Heat at 20°C | 500 J/kg.K |
| Electrical Resistivity | 0.94 µΩ·m |
Application Chart
| Industry | Applications |
| Petrochemical Industry | Heat exchangers, processing units, reactors |
| Power Generation | Boilers, superheaters, reheaters |
| Heat Treatment | Furnaces, kilns, radiant tubes |
| Chemical Processing | Handling aggressive chemicals |
| Automotive | Exhaust systems, catalytic converters |
| Aerospace | Engine components, afterburners |
| Oil and Gas | Piping systems, offshore platforms |
Why Choose 309H Grade Stainless Steel Fittings?
SS 309H fittings are the preferred choice for industries that operate in high-temperature and corrosive environments. Here are some key reasons to choose this grade:
- Enhanced High-Temperature Performance: The higher carbon content in 309H stainless steel provides superior performance at elevated temperatures, making it ideal for applications where heat resistance is crucial.
- Long-Term Durability: The combination of corrosion resistance, mechanical strength, and thermal stability ensures that 309H stainless steel fittings offer long-term durability and reliability, reducing the need for frequent replacements.
- Versatility: These fittings can be used in a wide range of applications, from heat treatment and power generation to chemical processing and exhaust systems, demonstrating their versatility.
- Safety: The robust properties of 309H stainless steel contribute to the safety and efficiency of industrial systems, reducing the risk of failure and associated downtime.
309H SS fittings are a crucial component in many industrial systems, offering exceptional performance in high-temperature and corrosive environments. At Amardeep Steel Centre LLP, we are proud to supply these high-quality fittings, ensuring that our clients have access to reliable and durable solutions for their industrial needs.
Whether you are involved in the petrochemical, power generation, or chemical processing industries, our 309H-grade SS fittings are designed to meet your specific requirements. With our commitment to quality, customization, and competitive pricing, Amardeep Steel Centre LLP is your trusted partner for all your stainless steel fitting needs.
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 309H Fittings. 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.
