George Metals, a well-respected manufacturer and supplier based in Houston, USA, focuses on crafting high-performance Stainless Steel 253MA Hex Bars specifically designed for extreme high-temperature environments. This particular alloy, 253MA, is an austenitic stainless steel enriched with rare earth metals and nitrogen, making it exceptional in terms of oxidation resistance, high-temperature strength, and structural stability, even at temperatures reaching 1150°C. Adhering to international standards like ASTM A276, George Metals delivers hex bars that are precision-engineered with tight tolerances, outstanding machinability, and remarkable mechanical integrity. These bars are commonly utilized in heat treatment equipment, furnace components, and petrochemical systems that require long-lasting durability under thermal stress.
Stainless Steel 253MA Hex Bars consist of about 20–22% Chromium, 10–12% Nickel, along with small amounts of Nitrogen and Rare Earth Metals, and a Silicon content of roughly 1.4–2.0% to boost oxidation resistance. This alloy boasts a high-temperature tensile strength of up to 650 MPa and excellent creep resistance, maintaining structural stability even under cyclic heating conditions. George Metals guarantees that each 253MA hex bar is crafted with a uniform grain structure, precise dimensions, and a smooth surface finish, all while meeting rigorous mechanical property standards for high-temperature, corrosive, and load-bearing applications.
Specification : EN, DIN, JIS, ASTM, BS, ASME, AISI
Standard Specification : ASTM A276, A479 / ASME SA276, SA479
Size : 15NB to 150NB IN
Diameter : 3.17mm to 350mm diameter
Length : 100 mm to 3000 mm Long & Above
Tolerance : H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients’ requirements
Finish : Black, Bright Polished, Rough Turned, NO.4 Finish, Matt Finish, BA Finish
Form : Round, Square, Hex (A/F), Rectangle, Billet, Ingot, Forging Etc
Surface : Hot Rolled Pickled or Sand Blasting Finished, Cold Drawn, Bright, Polished, Hairline
Condition : Cold Drawnd Pulished Cold Drawn Centreless Ground & Polished
| Grade | C | Mn | Si | S | N | Cr | Ni |
| 253 MA | 0.05 – 0.1 | 0.8 min | 1.1 – 2.0 | 0.03 min | 0.14 – 0.2 | 20 – 22 | 10 – 12 |
| Element | Density | Tensile Strength | Yield Strength (0.2%Offset) | Elongation |
| 253 MA | 7.8 g/cm3 | Psi – 87,000, MPa – 600 | Psi – 45,000, MPa – 310 | 40 % |
| STANDARD | WERKSTOFF NR. | UNS | EN | SS |
| 253 MA | 1.4835 | S30815 | X9CrNiSiNCe21-11-2 | 2368 |
Stainless Steel 253MA Hex Bars are perfect for applications that require outstanding oxidation resistance and mechanical performance at elevated temperatures. They are frequently used in the heat treatment sector for furnace parts, radiant tubes, and conveyor components, and they also find roles in kilns, cement plants, and petrochemical reformers. In the fields of power generation and metallurgical processing, these bars serve as structural components that endure continuous thermal cycling. Their excellent machinability and durability make them ideal for fasteners, brackets, and similar applications where reliability is key.
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
George Metals is a leading manufacturer, supplier, and exporter of high-quality bars, rods, and forgings, catering to various industries in Houston, USA
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