High temperature resistant stainless pipe is also called 310S stainless steel. It is austenitic chromium-nickel stainless steel with good oxidation resistance and corrosion resistance. Because of the higher percentage of chromium and nickel, it has much better creep strength. It can work continuously and has good high-temperature resistance.
Due to the high content of nickel (Ni) and chromium (Cr), it has good oxidation resistance, corrosion resistance, acid and alkali resistance, and high-temperature resistance. After the content, the strength is improved due to its solid solution-strengthening effect. The chemical composition of austenitic stainless steel is based on chromium and nickel with the addition of elements such as molybdenum, tungsten, niobium, and titanium. Because of its face-centered cubic structure, Therefore, it has high strength and creeps strength at high temperatures.
High temperature-resistant stainless pipe improves the fragile nature of carbon tool steel and extends the life of the tool. Vacuum degassing refined steel, stable quality, good hardenability, oil-cooled hardening (less quenching and deformation), good toughness and wear resistance, and durable tools.
High-temperature resistant stainless steel pipe finish-rolled and cold-drawn seamless pipe specifications: outer diameter 6mm—940mm; wall thickness 0.8mm—60mm. Plasma welding and arc welding pipe specifications: outer diameter 12mm—2540mm; wall thickness 0.5mm—30mm.
A high temperature-resistant stainless steel pipe is suitable for making various furnace components, the maximum working temperature is 1300 ℃, and the continuous use temperature is 1150 ℃. Its service life is 5 times that of traditional centrifugal casting pipes, and the price is 1/3 of similar imported products and 2/3 of domestic products. The annual output of high-temperature stainless steel pipes is 10,000 tons of high-quality stainless steel welded pipes and 8,000 tons of seamless pipes.
High Temperature Resistant Stainless Pipe Properties
High-temperature-resistant stainless steel pipes are engineered to withstand elevated temperatures without significant degradation in their mechanical properties or structural integrity. These pipes are commonly used in various industries, such as petrochemical, power generation, aerospace, and high-temperature processing applications. The specific properties of high-temperature resistant stainless steel pipes include:
Temperature Resistance:
These pipes are designed to withstand high temperatures, typically ranging from several hundred to over a thousand degrees Celsius, depending on the grade of stainless steel used.
Corrosion Resistance:
Stainless steel is inherently corrosion-resistant, and high-temperature-resistant stainless pipes are no exception. They can resist oxidation, scaling, and corrosive environments even at elevated temperatures.
Mechanical Strength:
These pipes retain their mechanical strength at high temperatures, ensuring they can handle the pressure and stress associated with the intended application.
Thermal Expansion:
High-temperature stainless pipes exhibit low thermal expansion characteristics, meaning they expand minimally when exposed to heat. This property helps prevent issues like deformation or leakage in high-temperature environments.
Creep Resistance:
Creep refers to the time-dependent deformation that occurs under constant load at high temperatures. High-temperature-resistant stainless steel pipes are designed to have excellent creep resistance, ensuring long-term structural stability.
Oxidation Resistance:
When exposed to high temperatures, stainless steel forms a protective oxide layer on its surface, which enhances its resistance to oxidation and prevents material degradation.
Scaling Resistance:
Scaling is the formation of thick, flaky oxides on the surface of metals at high temperatures. High-temperature-resistant stainless steel pipes are formulated to resist scaling, which helps maintain their performance and appearance over time.
Thermal Conductivity:
Stainless steel has relatively low thermal conductivity compared to some other materials, which can be advantageous in certain high-temperature applications.
Weldability:
High-temperature-resistant stainless steel pipes are typically designed to be easily weldable, allowing for efficient fabrication and installation.
Common grades of stainless steel used for high-temperature applications include austenitic stainless steels such as 304H, 316H, and 310S, as well as some ferritic and martensitic grades.
It’s essential to select the appropriate grade of high-temperature resistant stainless steel pipe based on the specific requirements of your application to ensure optimal performance and longevity. Additionally, factors such as external environmental conditions and the presence of corrosive agents should be considered when choosing the right material for your needs.