Stainless Steel 321H Pipe
Welcome to Amardeep Steel Centre, your trusted source for high-quality stainless steel products. In this article, we will explore the exceptional qualities and applications of Stainless Steel 321H Pipe. Whether you are an engineer, a procurement manager, or a DIY enthusiast, understanding the benefits and properties of 321H stainless steel will help you make informed decisions for your projects.
What is 321H Stainless Steel?
321H stainless steel is a higher carbon version of the 321 stainless steel alloy, specifically designed for enhanced creep resistance and high-temperature strength. The “H” in 321H stands for “high carbon content,” which makes this grade ideal for applications where the material will be subjected to elevated temperatures.
Stainless Steel 321H Pipes Properties
321H stainless steel offers a unique combination of properties that make it suitable for demanding environments. Some of the key properties of 321H stainless steel include:
- High Temperature Resistance: 321H stainless steel maintains excellent strength and stability at temperatures up to 1500°F (815°C). This makes it an ideal choice for high-temperature applications such as furnace components, heat exchangers, and aircraft exhaust systems.
- Corrosion Resistance: While not as corrosion-resistant as some other stainless steel grades, 321H stainless steel still offers good resistance to oxidation and corrosion in moderately corrosive environments. The addition of titanium improves its resistance to intergranular corrosion.
- Mechanical Properties: With a tensile strength of 515 MPa and yield strength of 205 MPa, 321H stainless steel exhibits strong mechanical properties. It also has good ductility and toughness, making it suitable for forming and welding processes.
- Stability: The presence of titanium in 321H stainless steel stabilizes the structure, preventing carbide precipitation during welding and exposure to high temperatures. This ensures that the material retains its strength and corrosion resistance over time.
Advantages of Stainless Steel 321H Pipe
- High-Temperature Resistance: Stainless Steel 321H pipes maintain excellent strength and stability at temperatures up to 1500°F (815°C). This makes them ideal for applications in environments where they will be exposed to high heat, such as in furnaces, heat exchangers, and exhaust systems.
- Improved Corrosion Resistance: The addition of titanium in 321H stainless steel enhances its resistance to intergranular corrosion, which can occur during welding or exposure to high temperatures. This makes 321H pipes more durable and reliable in moderately corrosive environments.
- Enhanced Mechanical Properties: With superior tensile strength and yield strength compared to other stainless steel grades, 321H stainless steel pipes offer robust mechanical properties. Their good ductility and toughness make them suitable for various forming and welding processes.
- Stability and Longevity: The titanium-stabilized structure of 321H stainless steel prevents carbide precipitation, ensuring the material retains its strength and corrosion resistance over time. This stability makes 321H pipes a reliable choice for long-term use in critical applications.
- Versatility in Applications: Due to their excellent high-temperature performance and corrosion resistance, 321H stainless steel pipes are used across a wide range of industries, including chemical processing, petrochemical, aerospace, power generation, and food processing. This versatility makes them a preferred material for diverse industrial applications.
Stainless Steel 321H Grade Pipes Schedule Chart
| Schedule | Nominal Pipe Size (NPS) | Outside Diameter (OD) (inches) | Wall Thickness (WT) (inches) |
| 10S | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.083″ – 0.250″ |
| 40S | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.109″ – 0.688″ |
| 80S | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.147″ – 1.500″ |
| 160 | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.188″ – 2.500″ |
| XXS | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.294″ – 2.750″ |
Mechanical Properties Chart for 321H SS pipes
| Property | Value |
| Tensile Strength | 515 MPa (74,700 psi) |
| Yield Strength | 205 MPa (29,700 psi) |
| Elongation | 35% |
| Hardness, Rockwell B | 95 max |
| Impact Strength | 120 J |
Specifications Chart
| Standard | Specification |
| ASTM | A312, A358, A269, A249 |
| ASME | SA312, SA358, SA269, SA249 |
| EN | 10216-5, 10297-2 |
| JIS | G3468, G3459 |
| DIN | 17456, 17458 |
Chemical Composition Chart for SS 321H pipes
| Element | Composition (%) |
| Carbon (C) | 0.04-0.10 |
| Chromium (Cr) | 17.0-19.0 |
| Nickel (Ni) | 9.0-12.0 |
| Manganese (Mn) | 2.00 max |
| Silicon (Si) | 1.00 max |
| Phosphorus (P) | 0.045 max |
| Sulfur (S) | 0.030 max |
| Titanium (Ti) | 0.30-0.60 |
| Iron (Fe) | Balance |
Physical Properties Chart
| Property | Value |
| Density | 7.9 g/cm³ |
| Melting Point | 1400-1425°C (2552-2597°F) |
| Thermal Conductivity | 16.0 W/m·K at 100°C |
| Specific Heat | 500 J/kg·K |
| Electrical Resistivity | 0.72 µΩ·m at 20°C |
| Modulus of Elasticity | 193 GPa |
Application Chart for 321H SS pipes
| Industry | Application |
| Chemical | Heat exchangers, reactors, process piping |
| Petrochemical | Refinery equipment, catalytic recovery systems |
| Aerospace | Aircraft exhaust manifolds, engine components |
| Power Generation | Boilers, superheaters, heat exchangers |
| Food Processing | Sterilization equipment, acidic food handling |
| Pharmaceutical | Process equipment, piping systems |
Why Choose Amardeep Steel Centre?
As a leading supplier of stainless steel products, Amardeep Steel Centre is committed to delivering excellence in quality and service. Here are some reasons to choose us for your 321H stainless steel pipe needs:
- Extensive Inventory: We maintain a vast inventory of 321H stainless steel pipes in various sizes and specifications, ensuring quick delivery and minimal lead times.
- Quality Assurance: Our products undergo rigorous quality checks to meet international standards and specifications, ensuring that you receive top-notch materials for your projects.
- Expertise: With years of experience in the industry, our team of experts provides technical support and guidance to help you select the right materials for your applications.
- Competitive Pricing: We offer competitive pricing without compromising on quality, making us a preferred choice for customers worldwide.
- Customer Satisfaction: Our commitment to customer satisfaction is reflected in our prompt service, transparent communication, and dedication to meeting your specific requirements.
Stainless Steel 321H pipes are an excellent choice for applications that demand high temperature resistance, mechanical strength, and stability. At Amardeep Steel Centre, we are dedicated to providing high-quality 321H stainless steel pipes that meet your specific needs. Whether you are involved in chemical processing, aerospace, or any other industry, our products are designed to deliver exceptional performance and reliability. Contact us today to learn more about our offerings and how we can support your projects with the best stainless steel solutions.
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 321H pipes. 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.
