Composition and Characteristics
The enhanced performance of 347H stainless steel is due to its carefully balanced chemical composition, which typically includes:
Chromium (Cr):17-20%
Nickel (Ni):9-13%
Carbon (C):0.04-0.10%
Niobium (Nb):10xC to 1%
Manganese (Mn):2% max
Silicon (Si):1% max
Phosphorus (P):0.045% max
Sulfur (S):0.03% max
The addition of niobium in 347H stainless steel stabilizes the alloy, preventing chromium carbide precipitation and maintaining its corrosion resistance even after welding. The higher carbon content enhances the alloy's ability to withstand high temperatures, making it more resistant to creep, a slow deformation that occurs under prolonged exposure to high stress and temperature.
Key Properties
347H stainless steel bar offers several key properties that make it an exceptional material for high-temperature and corrosive applications:
Superior High-Temperature Strength:The increased carbon content in 347H stainless steel significantly enhances its strength at elevated temperatures, making it suitable for applications that involve prolonged exposure to heat.
Excellent Creep Resistance:347H stainless steel is specifically engineered to resist creep, a phenomenon where materials deform under long-term exposure to high temperatures and stress. This makes it ideal for use in demanding environments.
Enhanced Corrosion Resistance:The addition of niobium prevents the formation of chromium carbides, ensuring that 347H stainless steel retains its corrosion resistance, even in welded structures or environments with repeated heating and cooling cycles.
Good Weldability:Despite its high carbon content, 347H stainless steel maintains good weldability, allowing for the fabrication of complex structures without sacrificing performance or durability.
Non-Magnetic in Annealed Condition:Like other austenitic stainless steels, 347H is non-magnetic when annealed, which can be advantageous in specific applications where magnetism is a concern.
Applications of 347H Stainless Steel Bar
Due to its unique combination of high-temperature resistance, strength, and corrosion protection, 347H stainless steel bar is used in a variety of demanding applications across different industries:
Petrochemical Industry:347H stainless steel is commonly used in the petrochemical industry for applications such as reactor vessels, piping systems, and heat exchangers, where materials must withstand high temperatures and corrosive environments.
Power Generation:The material is widely employed in power generation, particularly in superheater and reheater tubes, where its high-temperature strength and resistance to creep are essential.
Chemical Processing:347H stainless steel is ideal for chemical processing equipment, including reactors, furnaces, and catalytic converters, where both high-temperature stability and corrosion resistance are required.
Aerospace Industry:The alloy’s ability to perform in high-temperature environments makes it suitable for certain aerospace applications, including exhaust manifolds and turbine components.
Heat Treatment Equipment:347H stainless steel is used in the manufacturing of heat treatment equipment, such as furnaces and annealing boxes, where its resistance to oxidation and thermal stress is crucial.
Advantages of Choosing 347H Stainless Steel Bar
When selecting a material for high-temperature applications, 347H stainless steel bar offers several significant advantages:
High-Temperature Performance:347H stainless steel is engineered to maintain its structural integrity and resist creep, even at extreme temperatures, ensuring long-term reliability in challenging environments.
Corrosion Resistance:The niobium stabilization prevents the formation of chromium carbides, which can cause intergranular corrosion, ensuring that 347H stainless steel retains its corrosion resistance, even after welding or thermal cycling.
Versatility Across Applications:The alloy’s ability to perform well in both high-temperature and corrosive environments makes it suitable for a wide range of industries, from petrochemical to power generation.
Durability and Longevity:The combination of strength, creep resistance, and corrosion resistance ensures that components made from 347H stainless steel have a long service life, reducing maintenance costs and downtime.
Conclusion
347H stainless steel bar is a high-performance material designed to excel in high-temperature and corrosive environments. Whether you are working on petrochemical equipment, power generation components, or chemical processing systems, 347H stainless steel offers the durability, strength, and resistance needed to ensure reliable performance under the most demanding conditions. Explore our range of 347H stainless steel bars today and find the perfect material for your high-temperature applications.
