| Customization: | Available |
|---|---|
| Application: | Chemical Industry, Oil and Gas Industry, Building Material |
| Certification: | CE, ISO9001 |
|
Still deciding? Get samples of US$ 5/Piece
Request Sample
|
Suppliers with verified business licenses
Audited Supplier Audited by an independent third-party inspection agency
| Specification Aspect | ASTM A268 TP446 Welded Pipe | ASTM A268 TP410 Welded Pipe |
|---|---|---|
| Material Composition | - Chromium (Cr): ~26-29% (enhances high-temperature oxidation resistance). - Other elements (e.g., Mo, Ni) vary per UNS S44600 standard. |
- Chromium (Cr): 11.5-13.5% - Carbon (C): ≤0.15% - Manganese (Mn): ≤1.00% - Silicon (Si): ≤1.00% |
| Mechanical Properties | - Tensile Strength: ≥515 MPa - Yield Strength: ≥205 MPa - Elongation: ≥20% - Hardness: ≤207 HB |
- Tensile Strength: ≥415 MPa - Yield Strength: ≥205 MPa - Elongation: ≥20% - Hardness: ≤207 HB |
| Corrosion Resistance | - Excellent resistance to high-temperature scaling and oxidation. - Suitable for sulfurous environments. |
- Moderate corrosion resistance in mild conditions; improved via heat treatment (e.g., quenching). |
| Applications | - Petrochemical and power plant equipment (e.g., boilers, superheaters). - High-temperature, non-chloride aggressive environments. |
- Automotive exhaust systems, kitchenware, industrial machinery, and components requiring moderate corrosion resistance. |
| Manufacturing Standard | ASTM A268/A268M (seamless/welded ferritic/martensitic stainless steel tubing for general service). | Same as TP446. |
| Size Range | - OD: 6.35 mm (1/4") to 203 mm (8"). - Wall Thickness: 0.5 mm to 12.7 mm. |
- OD: 19.05 mm to 76.2 mm. - Wall Thickness: 0.5 mm to 12.7 mm. |
| Surface Finish | - Annealed and pickled (standard). - Optional: Bright polished or custom finishes. |
- Annealed and pickled; may be polished for aesthetics or functional requirements. |
| Testing Requirements | - Hydrostatic/nondestructive testing. - Mechanical tests (tension, flattening, flaring). - Third-party inspection available. |
- Hydrostatic testing, chemical analysis, and hardness testing. - PMI (Positive Material Identification). |
| Delivery Conditions | - Annealed and pickled (default). - Lengths up to 24 meters. |
- Annealed and pickled; lengths up to 24 meters. |
| Key Characteristics | - Ferritic structure with high chromium content for heat resistance. - Non-hardening via heat treatment. |
- Martensitic structure, hardenable via quenching and tempering. - Magnetic and weldable with precautions. |
| Advantage Aspect | Details |
|---|---|
| High-Temperature Resistance | - Exceptional oxidation and scaling resistance at elevated temperatures (up to 1100°C). - Suitable for sulfur-rich environments (e.g., petrochemical boilers). |
| Corrosion Resistance | - Resistant to nitric acid, organic acids, and alkaline solutions. - Non-hardening structure minimizes stress corrosion cracking. |
| Mechanical Stability | - Maintains strength and ductility at high temperatures (e.g., for superheater tubes). |
| Cost-Effectiveness | - Lower cost than austenitic grades (e.g., 316) due to reduced nickel/molybdenum content. |
| Weldability | - Easily welded with standard methods (TIG/MIG) without post-weld heat treatment. |
| Non-Magnetic Properties | - Ferritic structure ensures non-magnetic behavior for sensitive applications. |
| Design Flexibility | - Available in diverse sizes (OD: 6.35-203 mm) for versatile industrial installations. |
| Advantage Aspect | Details |
|---|---|
| Hardenability | - Martensitic structure allows hardening via quenching and tempering (e.g., up to ~45 HRC). |
| Mechanical Strength | - High tensile strength (≥415 MPa) and wear resistance for demanding mechanical applications. |
| Corrosion Resistance | - Moderate resistance to atmospheric corrosion, steam, and mild chemicals (e.g., food processing). |
| Magnetic Properties | - Magnetic behavior suitable for applications requiring magnetic retention or separation. |
| Weldability with Caution | - Weldable with proper pre/post-weld heat treatment to prevent embrittlement. |
| Surface Finish Options | - Polished finishes enhance aesthetics and reduce contamination buildup (e.g., kitchenware). |
| Cost-Effective Performance | - Balances corrosion resistance and mechanical strength at a lower cost than higher-alloy grades. |
){kind=link}