Alloy steel bars are widely used in various industries due to their exceptional mechanical properties and corrosion resistance. ASTM A182 F11 is a specification for forged or rolled alloy steel bars commonly employed in high-temperature and pressure applications. This article delves into the properties, applications, and manufacturing process of ASTM A182 F11 alloy steel bars.
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Specifications | ASTM A182, ASME SA182 |
Dimension Standard | EN, DIN, JIS, ASTM, BS, ASME, AISI |
Bar Diameter | 3 ~ 800mm |
Hex Bar size | 2-100mm A/F |
Flat bar size | Thickness: 2 -100mm. Width: 10 to 500mm. |
Square bar size | 4 to 100mm |
Rectangular Bars | Size: 33 x 30mm to 295 x 1066mm. Thickness: 3.0 to 12.0mm. |
Hollow Bars | 32mm OD x 16mm ID to 250mm OD x 200mm ID) |
Billet Size | 1/2 to 495mm Diameter |
Finish | Cold (bright) drawn, centreless ground, hot rolled, smooth turned, peeled, slit rolled edge, hot rolled annealed, Rough Turned, Bright, Polish, Grinding, Centreless Ground & Black |
Tolerance | H8, H9, H10, H11, H12, H13K9, K10, K11, K12 or as per clients requirements |
Bar Surface | Bright, Hot Rolled Pickled, Cold Drawn, Sand Blasting Finished, Polished, Hairline |
Rolled Bars Condition | Hardened & tempered, annealed |
Cold Rolled Bar Technique | Hot Rolled, Cold Drawn, Cold Rolled, Forged Round Bar, Rod |
Form | Round, Rod, T-Bar, Channel Bar, Precision Ground Bar, Flat Bar, Square, Blocks, Round Rod, Rings, Hollow, Triangle, Rectangle, Hex (A/F), Threaded, Half Round Bar, Profiles, Billet, Ingot, I/H Bar, Forging etc. |
The manufacturing of ASTM A182 F11 alloy steel bars typically involves the following steps:
Melting
Alloying elements are carefully measured and added to molten steel in a furnace to achieve the desired chemical composition.
Casting
The molten steel is poured into molds and allowed to solidify into ingots or billets.
Hot Rolling or Forging
The ingots or billets are heated and then shaped into bars through hot rolling or forging processes, which impart the desired mechanical properties and dimensions.
Heat Treatment
The bars undergo heat treatment processes such as annealing, quenching, and tempering to optimize their microstructure and mechanical properties.
Finishing
Finally, the bars may undergo surface treatment processes such as grinding, polishing, or coating to meet specific requirements for surface finish and corrosion resistance.
STANDARD | UNS | WNR. |
ASTM A182 F11 | K11597 | 1.7335 |
Grade | C | Mn | Si | P | Cr | Mo |
ASTM A182 F11 | 0.10 - 0.20 | 0.40 - 0.65 | 0.50 - 0.80 | 0.025 | 1.00 - 1.50 | 0.44 - 0.65 |
Chemical Composition: ASTM A182 F11 alloy steel bars typically contain chromium, molybdenum, and other alloying elements such as manganese, silicon, and vanadium. The precise chemical composition ensures superior mechanical properties and resistance to corrosion.
Mechanical Strength: These bars exhibit excellent tensile strength, yield strength, and hardness, making them suitable for withstanding high-pressure environments. The combination of alloying elements contributes to enhanced mechanical properties.
Corrosion Resistance: Chromium content imparts corrosion resistance to ASTM A182 F11 alloy steel bars, making them ideal for applications involving exposure to harsh environments, such as chemical processing, petrochemical, and power generation industries.
Heat Resistance: The molybdenum content provides heat resistance, enabling these bars to maintain their mechanical properties at elevated temperatures. This property is crucial for applications in high-temperature environments like boiler and turbine components.
• Weldability: ASTM A182 F11 alloy steel bars exhibit good weldability, allowing for ease of fabrication and assembly in various industrial processes.
Tensile Strength (ksi) min | Elongation (% in 50mm) min | Yield Strength 0.2% Proof (ksi) min |
570 | 23 | 295 |
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Oil and Gas Industry: These bars are widely used in the oil and gas sector for manufacturing components such as valves, flanges, and fittings that require high strength and corrosion resistance in demanding operating conditions.
Power Generation: ASTM A182 F11 alloy steel bars find applications in power plants for producing components like turbine blades, steam traps, and boiler tubes, where resistance to high temperatures and pressures is essential for efficient operation.
Chemical Processing: Due to their corrosion resistance and ability to withstand aggressive chemical environments, these bars are utilized in chemical processing plants for constructing reactors, heat exchangers, and piping systems.
Aerospace and Defense: Components subjected to extreme conditions in aerospace and defense applications, such as aircraft engines and missile systems, often incorporate ASTM A182 F11 alloy steel bars due to their high strength-to-weight ratio and heat resistance.
Automotive Industry: Certain automotive components, particularly those in high-performance vehicles, benefit from the superior mechanical properties and heat resistance offered by ASTM A182 F11 alloy steel bars, contributing to enhanced vehicle performance and durability.
Oil & Gas
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Power Plant Generation
Petrochemical Industry
Marine
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Aerospace
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Chemical
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Pharmaceuticals Industry
Cement
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