| Customization: | Available |
|---|---|
| Application: | Automotive Industry, Chemical Industry, Food Industry, Oil and Gas Industry, Pharmaceutical Industry |
| Certification: | CE, ISO9001 |
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| Property | Description | Key Details |
|---|---|---|
| Material Type | Austenitic stainless steel, stabilized with niobium (Nb) | Grade: TP347 (UNS S34700) |
| Chemical Composition | High chromium (Cr: 17-20%), nickel (Ni: 9-13%), and niobium (Nb: 10×C-1.0%) | Stabilized against carbide precipitation for improved corrosion resistance. |
| High-Temperature Performance | Excellent oxidation and scaling resistance up to 800°C (1472°F). | Retains strength in cyclic thermal environments (e.g., boilers, superheaters). |
| Corrosion Resistance | Resists intergranular, pitting, and stress corrosion cracking. | Performs well in acidic/alkaline media |
| Mechanical Properties | High tensile strength and creep rupture resistance. | Typical values: Tensile ≥515 MPa, Yield ≥205 MPa (at room temperature). |
| Fabrication | Easy to weld (TIG, MIG, SAW) without post-weld heat treatment. | Good cold-forming capability for complex geometries. |
| Standards & Certifications | Complies with ASTM A213 (seamless tubes), ASME SA213 (pressure systems). | Equivalent to EN 1.4550, DIN X6CrNiNb18-10. |
| Applications | - Boilers, superheaters, and heat exchangers in power plants. - Petrochemical refining systems. - High-temperature reformers. |
Ideal for environments requiring thermal stability and corrosion resistance. |
Oxidation and Corrosion Resistance: TP347 exhibits excellent resistance to oxidation, scaling, and corrosion in high-temperature environments (up to 800°C / 1472°F). Its chromium (Cr) content (~17-20%) and nickel (Ni) content (~9-13%) form a protective oxide layer, ensuring long-term durability.
Stabilization with Niobium: The addition of niobium minimizes carbide precipitation during welding or prolonged high-temperature exposure, preventing sensitization and intergranular corrosion.
Creep and Rupture Resistance: TP347 maintains high tensile strength and creep resistance under sustained thermal stress, making it ideal for pressure components in power plants and petrochemical industries.
Thermal Stability: The austenitic microstructure remains stable across a wide temperature range, ensuring consistent performance in cyclic heating/cooling conditions.
Ease of Welding: TP347 is readily weldable using common techniques (TIG, MIG, or SAW) without post-weld heat treatment, reducing fabrication time and costs.
Formability: Its ductility allows for cold working and forming into complex geometries, supporting versatile industrial applications.
Acid and Alkali Resistance: Performs well in environments containing sulfuric acid, nitric acid, and alkaline solutions, making it suitable for chemical processing equipment.
Anti-Fouling Properties: Smooth surface finish reduces scaling and fouling in heat transfer applications, improving operational efficiency.
Certifications: Conforms to ASTM A213 (seamless tubes), ASME SA213 (pressure applications), and equivalent EN/DIN standards (e.g., 1.4550).
Quality Assurance: Manufactured under strict controls for chemical composition, mechanical properties, and non-destructive testing (NDT) to ensure reliability.
Power generation boilers and superheaters
Heat recovery steam generators (HRSGs)
Petrochemical refining components
High-temperature heat exchangers and reformers
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