High Quality Alloy Steel Round Bars & Rods

F1/F5/F9/F11/F12/F22/F91/F92 • Mechanical Strength • Accuracy & Straightness • Quality & Finish

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Alloy Steel Round Bars Manufacturer & Exporter F1 F5 F9 F11 F12 F22 F91 F92 Grades

Alloy Steel Round Bars Manufacturer & Exporter | F1, F5, F9, F11, F12, F22, F91, F92 Grades

Ratnadeep Steel & Engg. Co. is a trusted manufacturer, exporter, and supplier of Alloy Steel Round Bars designed for high-temperature, high-pressure, and heavy-duty industrial applications. Alloy steel round bars offer superior strength, enhanced mechanical properties, excellent creep resistance, and reliable performance in demanding service conditions.

Alloy Steel F1, F5, F9, F11, and F12 Round Bars are chromium-molybdenum alloy steels widely used in boilers, heat exchangers, pressure vessels, and piping systems. These grades provide excellent tensile strength, oxidation resistance, and stability at elevated temperatures, making them suitable for thermal power and petrochemical industries.

Alloy Steel F22, F91, and F92 Round Bars are advanced high-strength alloy steels developed for extreme temperature and pressure applications. These grades deliver outstanding creep resistance, high-temperature strength, and long-term durability, making them ideal for power plants, refineries, oil & gas facilities, and critical structural components.

  • Alloy Steel F1 Round Bars
  • Alloy Steel F5 Round Bars
  • Alloy Steel F9 Round Bars
  • Alloy Steel F11 Round Bars
  • Alloy Steel F12 Round Bars
  • Alloy Steel F22 Round Bars
  • Alloy Steel F91 Round Bars
  • Alloy Steel F92 Round Bars

All our alloy steel round bars are manufactured and supplied in accordance with ASTM, ASME, EN, DIN, and ISO standards. We offer a wide range of diameters, lengths, surface finishes, and precision-cut sizes with full mill test certification (MTC), ensuring consistent quality and reliable performance for critical industrial applications.

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Our Range of Alloy Steel Round Bars

Alloy Steel F1 Round Bar

  • Low alloy chromium-molybdenum steel
  • Good strength and moderate corrosion resistance
  • Excellent weldability and machinability
  • Suitable for moderate temperature applications
  • Min tensile strength: ~415–550 MPa
  • Good resistance to pressure and mechanical stress
  • Used in boilers, piping systems, valves
  • Cost-effective Cr-Mo alloy grade

Alloy Steel F5 Round Bar

  • 5% chromium-molybdenum alloy steel
  • Excellent oxidation and corrosion resistance
  • High strength at elevated temperatures
  • Good creep and rupture resistance
  • Min tensile strength: ~515–620 MPa
  • Performs well in thermal cycling conditions
  • Used in refineries, power plants, heaters
  • Designed for high-temperature pressure service

Alloy Steel F9 Round Bar

  • 9% chromium alloy steel for elevated temperature service
  • Excellent creep strength and oxidation resistance
  • Good resistance to thermal fatigue
  • Stable microstructure for long-term service
  • Min tensile strength: ~585–690 MPa
  • High resistance to scaling
  • Used in boilers, superheaters, heat exchangers
  • Reliable in continuous high-temperature environments

Alloy Steel F11 Round Bar

  • Chromium-molybdenum alloy steel (1.25Cr–0.5Mo)
  • Good high-temperature strength and toughness
  • Excellent weldability with heat treatment
  • Good resistance to hydrogen attack
  • Min tensile strength: ~515–620 MPa
  • Used in pressure vessels and piping systems
  • Performs well in petrochemical applications
  • Long-term thermal stability

Alloy Steel F12 Round Bar

  • Higher chromium content than F11
  • Improved oxidation and corrosion resistance
  • Good creep resistance at high temperatures
  • Excellent strength retention under pressure
  • Min tensile strength: ~515–620 MPa
  • Suitable for power generation equipment
  • Used in boilers, heaters, superheaters
  • Stable performance in harsh environments

Alloy Steel F22 Round Bar

  • 2.25Cr–1Mo alloy steel
  • Excellent creep resistance and weldability
  • Good resistance to hydrogen damage
  • High strength for pressure service
  • Min tensile strength: ~515–690 MPa
  • Used in pressure vessels, piping, reactors
  • Ideal for refinery and petrochemical plants
  • Long service life under thermal stress

Alloy Steel F91 Round Bar

  • 9Cr–1Mo–V–Nb creep-resistant steel
  • Very high creep and rupture strength
  • Excellent oxidation resistance
  • Lightweight compared to traditional Cr-Mo steels
  • Min tensile strength: ~585–760 MPa
  • Used in ultra-supercritical power plants
  • High resistance to thermal fatigue
  • Long-term structural stability

Alloy Steel F92 Round Bar

  • Advanced 9Cr creep-strength enhanced ferritic steel
  • Higher strength than F91
  • Excellent resistance to oxidation and corrosion
  • Superior long-term creep performance
  • Min tensile strength: ~620–820 MPa
  • Used in advanced thermal power plants
  • Ideal for high-pressure steam piping
  • Designed for extreme temperature service

The stainless steel round bars we supply undergo a comprehensive quality assurance process, including ultrasonic testing (UT), eddy current testing (ECT), and other essential non-destructive testing (NDT) methods, along with detailed chemical composition analysis and mechanical property evaluation. Each round bar is inspected at multiple stages of production to ensure freedom from surface and internal defects, dimensional accuracy, and consistent metallurgical quality. All materials are manufactured and tested in accordance with applicable ASTM, ASME, EN, DIN, and ISO standards, ensuring reliable performance and full acceptance in demanding industrial applications across domestic and international markets.

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Looking for high-quality alloy steel grade F1, F5, F9, F11, F12, F22, F91, or F92 round bars and rods? Get in touch with us today.

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