ASTM A312 UNS S30815 Seamless Steel Pipe High Temperature & Oxidation Resistant for Heat Exchanger & Furnace Applications
ASTM A312 UNS S30815 Seamless Steel Pipe High Temperature & Oxidation Resistant for Heat Exchanger & Furnace Applications
With over 35 years of industrial expertise and a global supply network serving 85 countries, YUHONG Group specializes in the manufacturing of high-performance stainless steel tubes for extreme service conditions. Our ASTM A312 S30815 (253MA) Stainless Steel Seamless Tubes are engineered for applications demanding exceptional high-temperature strength, outstanding oxidation resistance, and long-term reliability. We combine advanced metallurgical control with precision manufacturing to deliver tubing solutions that meet the most stringent international standards, backed by comprehensive certifications and a commitment to quality that ensures optimal performance in your critical thermal systems
Chemical Composition of Grade S30815 (UNS S30815)
| Element | Requirement (%) | Notes |
| Carbon (C) | 0.05 - 0.10 | |
| Manganese (Mn), max | 0.8 | |
| Phosphorus (P), max | 0.04 | |
| Sulfur (S), max | 0.03 | |
| Silicon (Si) | 1.40 - 2.00 | Provides high-temperature oxidation resistance. |
| Chromium (Cr) | 20.0 - 22.0 | |
| Nickel (Ni) | 10.0 - 12.0 | |
| Nitrogen (N) | 0.14 - 0.20 | For solid solution strengthening. |
| Cerium (Ce) | 0.03 - 0.08 | Rare earth element for improved oxide scale adhesion. |
Annealing Requirements for UNS S30815
| Parameter | Specification | Notes |
| Grade or UNS Designation | S30815, S31272 | This annealing requirement applies to both UNS S30815 and S31272. |
| Heat Treating Temperature | 1920 - 2280 °F [1180 - 1250 °C] |
Tensile Requirements for UNS S30815 (Grade 30815)
| Property | Requirement (min) | Notes |
| Grade (Associated) | TP304LN | The corresponding grade for UNS S30815 in this table. |
| UNS Designation | S30815 | Austenitic heat-resistant steel (e.g., RA 253 MA, 153MA). |
| Tensile Strength | 87 ksi | 600 MPa |
| Yield Strength (0.2% offset) | 45 ksi | 310 MPa |
Key Product Advantages for UNS S30815
- Exceptional High-Temperature Performance: The UNS S30815 (253MA) grade is micro-alloyed with nitrogen and rare earth elements (Cerium), providing superior oxidation resistance and high creep strength in temperatures ranging from 850°C to 1100°C. This makes it ideal for furnace components, radiant tubes, and heat exchangers operating under severe thermal stress.
- Excellent Mechanical Properties: This austenitic stainless steel offers a minimum tensile strength of 600 MPa and a minimum yield strength of 310 MPa, ensuring structural integrity and durability under high-pressure, high-temperature conditions, outperforming standard grades like 304 and 310.
- Good Fabricability: The tube features good weldability and formability, allowing for easier fabrication and installation into complex high-temperature systems using common welding methods, which helps reduce overall project complexity and cost.
- Cost-Effective Solution for Demanding Applications: By offering a performance level that can approach more expensive nickel-based alloys in many high-temperature scenarios, ASTM A312 S30815 provides an excellent balance of performance and cost-effectiveness for industries such as power generation, petrochemical processing, and mineral processing
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