Stainless Steel 253Ma Pipes consist of Chromium (20-22%), Nickel (10-12%), Silicon (1.4-2%), Nitrogen (0.14-0.2%), Carbon (0.05-0.10%), and traces of Cerium for better oxidation resistance. Their mechanical strength consists of a tensile strength of ≥600 MPa, yield strength of ≥310 MPa, and elongation of ≥40%, offering superior durability in high-stress conditions. The physical characteristics are a density of 7.8 g/cm³, thermal conductivity of 15 W/m·K, and a melting point of around 1420°C. These characteristics make them suitable for high-temperature applications that need strength and oxidation resistance.
| Specifications | ASTM / ASME A312 / SA312 |
| Seamless Pipes & Tubes Sizes | 1 / 2″ NB – 8″ NB |
| Welded Pipes & Tubes Sizes | 6″ NB – 24″ NB |
| Outer Diameter | 6.0-630mm |
| Schedule | SCH 10, SCH20, SCH30, SCH40, STD, SCH60, XS, SCH80, SCH120, SCH140, SCH160, XXS |
| Thickness | 0.3mm – 50 mm |
| Type | Seamless / ERW / Welded/ Fabricated |
| Form | Round Pipes/Tubes, Square Pipes/Tubes, Rectangular Pipe/Tubes, Coiled Tubes, “U” Shape, Pan Cake Coils, Hydraulic Tubes |
| Length | Single Random, Double Random & Cut Length |
| End | Plain End, Beveled End, Treaded |
| Grade | C | Mn | Si | S | P | Fe | Ni | Cr | Ce | N |
|---|---|---|---|---|---|---|---|---|---|---|
| 253 MA | 0.10 max | 0.80 max | 2.0 max | 2.0 max | 0.04 max | Bal | 10.0 – 12.0 | 20.0 – 22.0 | 0.03 – 0.08 | 0.14 – 0.20 |
| Element | Density | Tensile Strength (MPa) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (MPa) min | Hardness |
|---|---|---|---|---|---|
| 253 MA | 7.8 g/cm3 | 600 | 40 | 310 | HR B – 95, HB – 217 |
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Stainless Steel 253Ma Pipes are extensively used in high-temperature applications owing to their high oxidation resistance and mechanical strength. They find general applications in furnace components, heat exchangers, boiler tubes, and kiln linings. Moreover, they find applications in petrochemical, power generation, and cement industries where there is a need for extreme heat resistance. Their higher strength and resistance make them applicable in burner nozzles, exhaust ducts, and refinery equipment. With superior weldability and corrosion resistance, 253Ma pipes are critical for uses subjected to high thermal stress, harsh environments, and stringent industrial processes.
High-performance alloy featuring excellent oxidation and corrosion resistance, ideal for high-temperature applications. It offers durability, strength, and reliability in challenging environments.
Custom-engineered for high-temperature and corrosive environments. They combine the alloy’s excellent oxidation and corrosion resistance with precise fabrication techniques for optimal performance and durability.
Designed for high-temperature applications, offering superior oxidation and corrosion resistance. It combines strength and durability with precise welding for reliable performance in harsh conditions.
High-temperature environments, providing excellent oxidation and corrosion resistance. They offer durability and strength, making them suitable for demanding industrial applications.
Excellent high-temperature and corrosion resistance. They combine strength and durability with precision welding, ideal for demanding industrial and high-performance applications.
High-temperature and corrosion resistance with strong, precise welds. They are ideal for industrial applications requiring durability and reliability in harsh environments.
Stainless Steel 253Ma Pipes are shipped with necessary test certificates, such as Mill Test Certificates (MTC), third-party inspection reports, and meeting ASTM/ASME standards for ensuring high quality and reliability. They are safely packed in wooden crates, pallets, or moisture-proof cover to avoid damage during transportation. With an organized supply chain and global shipping facilities, the pipes are delivered safely and on time to domestic and international markets with high customer satisfaction and product integrity.







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