At Naing Steel, we take pride in being a trusted manufacturer and supplier right here in Naypyidaw, providing the industrial backbone of Myanmar with materials built for demanding environments. Our Alloy Steel F911 Bars are a prime example of this commitment, engineered to deliver exceptional performance where standard steels fall short. We understand that your projects require reliability, which is why we focus on producing bars that consistently meet the highest standards of strength and durability, supporting the ambitious growth and development happening across our nation.
The strength of Alloy Steel F911 lies in its carefully balanced composition, which includes chromium, molybdenum, and vanadium. This specific blend gives the bars their remarkable mechanical properties, including high tensile strength and excellent resistance to creep, meaning they can withstand intense pressure and high temperatures over long periods without deforming. This combination ensures the material maintains its integrity under stress, making it a fundamentally robust choice for critical applications where failure is not an option.
Diameter : 8mm-3000mm
Length : 3,000-10,000mm
Finish : Bright, Polish & Black
Condition : Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished
Form : Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wire-mesh, Billet, Ingot, Forging Etc.
| Grade Symbol | UNS Number | Alloy | Elements | Composition % |
|---|---|---|---|---|
| F911 | K91061 | 9% chromium, 1% molybdenum, 0.2% vanadium plus columbium and nitrogen | Carbon | 0.09 – 0.13 |
| Manganese | 0.30 – 0.60 | |||
| Phosphorus | 0.020 max | |||
| Sulfur | 0.010 max | |||
| Silicon | 0.10 – 0.50 | |||
| Nickel | 0.40 max | |||
| Chromium | 8.5 – 9.5 | |||
| Molybdenum | 0.90 – 1.10 | |||
| Columbium | 0.060 – 0.10 | |||
| Tungsten | 0.90 – 1.10 | |||
| Aluminium | 0.02 max | |||
| Nitrogen | 0.04 – 0.09 | |||
| Vanadium | 0.18–0.25 | |||
| Boron | 0.0003 – 0.006 | |||
| Titanium | 0.01 max | |||
| Zirconium | 0.01 max |
| Property | Value |
|---|---|
| Tensile Strength, min, ksi [MPa] | 90 [620] |
| Yield Strength, min, ksi [MPa] | 64 [440] |
| Elongation in 2 in. [50mm] or 4D, min, % | 18 |
| Reduction or Area, min, % | 40 |
| Brinell Hardness Number, HBW | 187-248 |
We provide products that come with both mill test certificates and third-party test certificates, ensuring the highest standards of quality and compliance.
Because of this unique resilience, Alloy Steel F911 Bars are indispensable in sectors that operate under extreme conditions. You will typically find them in the power generation industry, forming essential parts of boilers, turbines, and high-temperature piping systems. They are also crucial in petrochemical plants and refineries for constructing pressure vessels and heat exchangers. Essentially, wherever there is a need for a component that can reliably handle intense heat and pressure, F911 bars provide the necessary backbone for safe and efficient operations.
Naing Steel is a leading manufacturer, supplier and exporter of high-quality Carbon Steel, Alloy Steel, Mild Steel and Galvanized Steel products. Our extensive product range includes Pipes, Tubes, Flanges, Pipe Fittings, Forged Fittings, Sheets and Plates, catering to various industries in Naypyidaw, Myanmar.
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