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Product Overview
Introduction To 253 MA / UNS S30815 / EN 1.4835
MOKSH TUBES & FITTINGS LLP is a trusted manufacturer, supplier, exporter, and stockist of 253 MA (UNS S30815 / EN 1.4835) – a high-temperature austenitic stainless steel designed for excellent oxidation resistance, high creep strength, and good structural stability. We offer a broad range of 253 MA products including Pipes & Tubes, Fittings, Flanges, Fasteners, Sheets & Plates, Bars, Wire Mesh, and Custom Components.
253 MA Originally developed by Outokumpu, 253 MA combines moderate nickel content with rare earth and alkali metal additions, delivering superior strength and oxidation resistance at elevated temperatures (up to 1150°C / 2100°F). It is ideal for applications involving high thermal stresses, cyclic heating, and corrosive industrial atmospheres.
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Specifications of 253 MA (UNS R60702)
| Category | Details |
|---|---|
| Grade | 253 MA / UNS R60702 |
| Type | Commercially Pure 253 |
| Standards | ASTM B551, B523, B658, B493, B550 |
| Forms | Pipes, Tubes, Sheets, Plates, Rods, Wire, Fittings, Flanges, Fasteners |
| Testing | Chemical Analysis, PMI, Tensile, Hardness |
| Certification | EN 10204 3.1 / 3.2 |
Chemical Composition
| Element | Composition (%) |
|---|---|
| Nickel | 10.0 – 12.0 |
| Chromium | 20.0 – 22.0 |
| Carbon | 0.05 – 0.10 |
| Silicon | 1.40 – 2.00 |
| Manganese | ≤ 0.80 |
| Nitrogen | 0.14 – 0.20 |
| Rare Earth Metals | 0.05 |
| Iron | Balance |
Mechanical Properties of 253 MA (Annealed)
| Temperature | Tensile Strength (MPa) | Yield Strength (MPa) | Hardness (BHN) |
|---|---|---|---|
| 25 °C (80 °F) | 379 | 207 | 145 |
| 425 °C (800 °F) | ~207 | ~124 | ~100 |
| 540 °C (1000 °F) | ~172 | ~103 | ~90 |
| 650 °C (1200 °F) | ~138 | ~83 | ~85 |
| 705 °C (1300 °F) | ~124 | ~69 | ~80 |
| 760 °C (1400 °F) | ~117 | ~62 | ~75 |
Uses and Advantages
High oxidation resistance up to 1150°C (2100°F)
Outstanding creep rupture strength
Excellent structural stability at elevated temperatures
Good weldability and fabricability
Lower nickel content for cost efficiency compared to other heat-resistant alloys
Applications of 253 MA
253 MA is designed for use in high-temperature, high-stress, and highly oxidizing environments. Its unique combination of strength, oxidation resistance, and formability makes it suitable for:
Chemical Processing
Oil & Gas
Marine
Pharmaceutical
Heat Exchangers
Power Plants
WHY CHOOSE US?
FAQ's - 253 MA Stainless Steel (UNS S30815 / EN 1.4835)
What is 253 MA stainless steel and its key features?
253 MA (UNS S30815 / EN 1.4835) is a high-temperature austenitic stainless steel developed for excellent oxidation resistance, high creep strength, and structural stability at elevated temperatures. Originally developed by Outokumpu, it contains moderate nickel along with rare earth and alkali metal additions, providing superior performance in high thermal stress, cyclic heating, and corrosive environments, with service temperatures up to 1150°C (2100°F).
What types of 253 MA products does Moksh Tubes & Fittings LLP supply?
Moksh Tubes & Fittings LLP offers a comprehensive range of 253 MA products including seamless and welded pipes (ERW & EFW), capillary, U-bend, boiler, and heat exchanger tubes, sheets, plates, coils, strips, round bars, flat bars, hex bars, square bars, pipe fittings, flanges, fasteners, wire mesh, and custom-fabricated components. All products meet stringent industry standards for high-temperature applications.
What are the advantages of using 253 MA stainless steel?
253 MA provides outstanding oxidation resistance up to 1150°C (2100°F), excellent creep rupture strength, and structural stability at elevated temperatures. It is cost-efficient due to its lower nickel content compared to other heat-resistant alloys, has good weldability and fabricability, and performs reliably under high-stress and corrosive conditions.
Which industries commonly use 253 MA materials?
253 MA is widely used in industries requiring high-temperature resistance and mechanical stability, including heat treatment equipment (furnace parts, rollers, and radiant tubes), petrochemical (reformer tubes, burners, catalyst supports), power generation (boilers, superheaters, heat exchangers), cement and lime kilns (lifters, anchor bolts, refractory supports), incineration and waste processing, and steel and glass manufacturing (conveyor belts, flame shields, hot zones).
Why choose Moksh Tubes & Fittings LLP for 253 MA supply?
Moksh Tubes & Fittings LLP specializes in high-performance heat-resistant alloys like 253 MA, offering rigorous quality control with EN 10204 3.1 / 3.2 certifications, ready-to-ship inventory, custom sizes, fast turnaround, and technical metallurgical support. Their global logistics capabilities ensure reliable supply and precision products for demanding industrial applications.
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