Stainless Steel 347 Pipe
Introduction to 347 Stainless Steel
Stainless Steel 347 is a columbium-stabilized austenitic stainless steel with excellent resistance to intergranular corrosion. This high-performance alloy is a preferred choice in applications requiring heat resistance and corrosion resistance. It is particularly effective in environments exposed to high temperatures, making it suitable for various industrial uses. Understanding the properties and applications of stainless steel 347 pipe can help in selecting the right material for your needs.
What is 347 Stainless Steel?
347 stainless steel is an alloy containing a minimum of 18% chromium and 10% nickel, with the addition of columbium (niobium) and tantalum. These elements enhance its stability and provide an excellent combination of mechanical properties and corrosion resistance. The stabilization of the steel prevents carbide precipitation at the grain boundaries, which can occur during exposure to high temperatures. This makes stainless steel 347 highly effective in preventing intergranular corrosion.
347 Stainless Steel Properties
The key properties of 347 stainless steel include:
- High Corrosion Resistance: The columbium in 347 stainless steel stabilizes the alloy against the formation of chromium carbides, which enhances its resistance to intergranular corrosion.
- Heat Resistance: 347 stainless steel retains its mechanical properties and corrosion resistance at temperatures up to 1500°F (816°C). It is widely used in high-temperature environments such as furnace parts and heat exchangers.
- Good Mechanical Properties: This alloy maintains its strength and toughness at both low and high temperatures, making it versatile for various applications.
- Weldability: Stainless steel 347 pipe is known for its excellent weldability, allowing it to be easily fabricated into different shapes and sizes.
- Durability: The material’s robustness ensures long-lasting performance, even under harsh conditions.
Advantages of Stainless Steel 347 Pipe
- Superior Corrosion Resistance: Effectively resists intergranular corrosion, making it ideal for high-temperature applications.
- High Heat Resistance: Maintains strength and stability at temperatures up to 1500°F (816°C).
- Excellent Weldability: Easily welded and fabricated, providing versatility in construction and manufacturing.
- Durable and Long-Lasting: Robust performance under harsh conditions, leading to lower maintenance costs and extended service life.
- Versatile Applications: Suitable for a wide range of industries, including aerospace, chemical processing, oil and gas, power generation, and food processing.
Stainless Steel 347 Pipe Schedule and Size Chart
| Schedule | Nominal Pipe Size (NPS) | Outer Diameter (OD) (in) | Wall Thickness (in) |
| SCH 10 | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.109″ – 0.250″ |
| SCH 40 | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.147″ – 0.500″ |
| SCH 80 | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.188″ – 0.750″ |
| SCH 160 | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.294″ – 1.500″ |
| XXS | 1/2″ – 24″ | 0.84″ – 24.00″ | 0.308″ – 2.000″ |
Mechanical Properties Chart for 347 SS pipe
| Property | Value |
| Tensile Strength | 75 ksi (515 MPa) |
| Yield Strength | 30 ksi (205 MPa) |
| Elongation | 40% in 2 inches |
| Hardness | 217 Brinell (max) |
| Modulus of Elasticity | 28.5 x 10^6 psi (196 GPa) |
Specifications Chart for 347 SS pipe
| Standard | Specification |
| ASTM | A312, A358, A213, A240 |
| ASME | SA312, SA358, SA213, SA240 |
| EN | 10216-5, 10217-7 |
| UNS | S34700, S34709 |
| DIN | 1.4550 |
Chemical Composition Chart for SS 347 pipes
| Element | Composition (%) |
| Carbon (C) | ≤ 0.08 |
| Manganese (Mn) | ≤ 2.00 |
| Phosphorus (P) | ≤ 0.045 |
| Sulfur (S) | ≤ 0.030 |
| Silicon (Si) | ≤ 1.00 |
| Chromium (Cr) | 17.0 – 19.0 |
| Nickel (Ni) | 9.0 – 13.0 |
| Columbium (Nb) | 10 x C to 1.0 |
| Iron (Fe) | Balance |
Physical Properties Chart
| Property | Value |
| Density | 7.92 g/cm³ |
| Melting Point | 1398 – 1446°C (2550 – 2635°F) |
| Specific Heat | 500 J/kg·K |
| Thermal Conductivity | 16.3 W/m·K |
| Electrical Resistivity | 0.73 µΩ·m |
Application Chart for Stainless Steel 347 pipe
| Industry | Application |
| Aerospace | High-temperature components |
| Chemical Processing | Piping systems, heat exchangers |
| Oil and Gas | Refinery equipment, piping systems |
| Power Generation | Boiler tubes, power plant components |
| Food Processing | Equipment requiring cleanliness and durability |
Why Choose Stainless Steel 347?
Selecting 347 stainless steel material for your piping needs ensures you benefit from:
- Enhanced Durability: The alloy’s ability to withstand high temperatures and corrosive environments ensures long-term reliability and performance.
- Reduced Maintenance: The high resistance to corrosion and mechanical stress reduces the frequency and cost of maintenance.
- Versatile Applications: The combination of properties makes it suitable for a wide range of industries, providing flexibility in usage.
- High Performance: The mechanical and thermal properties ensure optimal performance in demanding conditions, making it a cost-effective solution in the long run.
347 stainless steel offers a superior combination of corrosion resistance, heat resistance, and mechanical strength, making it an ideal choice for a wide range of applications. Whether you need piping for high-temperature environments, corrosive conditions, or demanding mechanical applications, stainless steel 347 provides a reliable and durable solution.
At Amardeep Steel Centre, we supply high-quality 347 stainless steel pipes tailored to meet the specific needs of our clients. Our extensive inventory and commitment to quality ensure you receive the best materials for your projects. Contact us today to learn more about our products and how we can assist you in selecting the right stainless steel solutions for your 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 347 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.
