ASTM A182 F5 is a specification developed by the American Society for Testing and Materials (ASTM) that covers alloy steel bars intended for high-temperature service. Alloy steel bars are widely used in various industries for their excellent combination of strength, toughness, and corrosion resistance, making them suitable for applications in high-temperature environments.
Alloy steel is a type of steel that contains elements such as chromium, molybdenum, and vanadium in varying proportions to enhance its mechanical properties. ASTM A182 F5 specifically focuses on a low-alloy steel grade with the addition of chromium and molybdenum, offering improved corrosion resistance and high-temperature strength compared to carbon steels.
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Heat Treatment of ASTM A182 F5 Alloy Steel Bars: Heat treatment is a crucial process in the manufacturing of ASTM A182 F5 alloy steel bars. The standard recommends a solution annealing treatment followed by tempering to achieve the desired combination of strength and toughness. This heat treatment process also helps in refining the microstructure of the material, enhancing its mechanical properties.
Corrosion Resistance of ASTM A182 Gr F1 Alloy Steel Bars: One of the key advantages of ASTM A182 Gr F1 alloy steel bars is their excellent resistance to corrosion, particularly in high-temperature and corrosive environments. The presence of chromium and molybdenum in the alloy enhances its corrosion resistance by forming a protective oxide layer on the surface, which prevents further oxidation and deterioration of the material.
Testing and Certification of ASTM A182 F5 Alloy Steel Bars: Manufacturers producing ASTM A182 F5 alloy steel bars must adhere to rigorous testing procedures to ensure compliance with the standard. Common tests include mechanical property tests, chemical analysis, hardness tests, and non-destructive testing methods. Additionally, bars meeting the specified requirements are issued with a certification that guarantees their quality and conformity to ASTM standards.
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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. |
Melting
The first step in the process is melting raw materials in an electric furnace. These raw materials are typically iron ore, chromium, nickel, and other elements in exact amounts.
Hot Rolling
After being heated, the billets are shaped into long, thin rods by going through a series of rolling mills. Because the metal is heated above its recrystallization temperature during this operation, it is known as hot rolling.
Pickling
The pickling process is used to the bars in order to eliminate any oxide, scale, or other surface contaminants. Usually, an acid solution is used for this.
Cutting
Lastly, shearing machines or other cutting techniques are used to cut the rods to the required length.
STANDARD | UNS | WNR. | JIS |
ASTM A182 F5 | K41545 | 1.7362 | - |
The chemical composition of ASTM A182 F5 alloy steel bars includes a minimum percentage of key elements. For instance, chromium content ranges from 4.00-6.00%, and molybdenum content ranges from 0.44-0.65%. These alloying elements contribute to the material's ability to withstand elevated temperatures and provide corrosion resistance.
Grade | C | Mn | Si | Mo | Cr | P |
ASTM A182 F5 | 0.15 Max | 0.30-0.60 | 0.50 Max | 0.44-0.65 | 4.0-6.0 | 0.035 Max |
ASTM A182 F5 alloy steel bars are designed to meet specific mechanical property requirements. The standard specifies minimum tensile strength, yield strength, and elongation values, ensuring the material's reliability and performance under high-stress conditions.
Tensile Strength (ksi) min | Elongation | Yield Strength 0.2% Proof (ksi) min |
415 | 30 | 205 |
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ASTM A182 F5 alloy steel bars find applications in various industries where high-temperature and corrosion resistance are essential. Common applications include:
Oil and Gas Industry: Alloy steel bars are used in components like valves, fittings, and flanges that are subjected to high temperatures and corrosive environments in oil and gas processing.
Power Generation: These bars are utilized in power plants for components such as turbine blades, steam pipes, and other high-temperature applications.
Chemical Processing: Alloy steel bars are employed in equipment and components handling corrosive chemicals in chemical processing plants.
Aerospace: In the aerospace industry, ASTM A182 F5 alloy steel bars are used in critical components like engine parts and landing gear.
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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