4340 Alloy Steel Round Bar

₹35 - ₹62

Minimum Order : 200 unit

Customization as per requirements


4340 Alloy Steel Round Bar – Specification

Specification Details
Size Range10 mm to 200 mm
Length 6000 mm
StandardsAstm, Asme, Din, Nf, Jis, En, Ios
FinishedBlack, Bright, Cold Drawn, Polish, Polished, Centreless Ground

4340 Alloy steel Round Bar Manufacturer in India

Nippon Alloys Inc is a 4340 Alloy Steel Round Bar Manufacturer.The company provides top-quality round bars made of nickel-chromium-molybdenum alloy steel. Our good quality bars are renowned all over the world in terms of their strength, toughness, high tensile strength, and fatigue resistance and are made to cope with extremely critical applications in the aerospace, automotive, oil & gas and power generation industries. They are heat treated by processes of quenching and tempering and meet the standards. They can withstand high temperature and stress and are thus applicable in crankshafts, gears, shafts and other heavy load component usage. Take a look at our Alloy Steel Round Bar, trusted by professionals across industries.

Our round bars made of 4340 alloy of steel are available on reputable B2B websites and provide reliable performance despite being highly durable, resistant against wear and enjoying easy machineability. More suited to bulk purchases, these bars have the advantage of being supported by logistics and quality assurance, so they can be used by OEMs and other industrial manufacturers. They have long-service life, excellent precision characteristics and have been designed to perform at the ever-increasing elevated level of high-performance, engineering-grade.



Type of Sub-products

  • Annealed 4340 Alloy Steel Round Bar
    Annealed 4340 Alloy Steel Round Bar

    Annealed 4340 Alloy Steel Round Bar

    Softened for improved machinability, these bars are commonly used for parts that will undergo later heat treatment. Suitable for aerospace tooling and custom machined components.

  • Quenched & Tempered 4340 Round Bar
    Quenched & Tempered 4340 Round Bar

    Quenched & Tempered 4340 Round Bar

    Heat treated for maximum strength and impact resistance, ideal for automotive, heavy equipment, and defense sector parts like shafts and gear blanks.


Frequently Asked Questions

What makes 4340 alloy steel round bars ideal for high stress applications?

4340 alloy steel round bars offer high tensile strength, toughness, and fatigue resistance. These properties make them suitable for components exposed to dynamic loads, such as axles, gears, and crankshafts.

Can 4340 alloy steel round bars be heat treated?

Yes, 4340 steel responds well to heat treatments like quenching and tempering, which enhance its mechanical properties, including hardness, impact resistance, and tensile strength.

What industries typically use 4340 alloy steel round bars?

Industries such as aerospace, automotive, oil & gas, construction, and defense use 4340 bars for critical parts including shafts, couplings, drill collars, and other high load structural components.


Countries We Export – 4340 Alloy Steel Round Bar

  • India

Cities We Supply – 4340 Alloy Steel Round Bar

  • Mumbai
  • Lucknow
  • Nashik
  • Pune
  • Rajkot
  • Moradabad
  • Angul
  • Rudrapur
  • Hosdurg
  • Gandhinagar
  • Rajahmundry
  • Durgapur
  • Bharuch
  • Panipat

Industries We Serve – 4340 Alloy Steel Round Bar

  • Sugar industry

    Sugar

  • Oil And Gas Industries industry

    Oil And Gas Industries

  • Paper Mill industry

    Paper Mill

  • Power Plant industry

    Power Plant

  • Bridge And Building industry

    Bridge And Building

  • Aerospace Industries industry

    Aerospace Industries

  • Automobile Industry industry

    Automobile Industry

  • Electrical Industry industry

    Electrical Industry

  • Defense Industry industry

    Defense Industry

  • Construction & Fabrications industry

    Construction & Fabrications

  • Ring Man Units industry

    Ring Man Units

  • Railways industry

    Railways

  • Gasket Industry industry

    Gasket Industry

  • Pharmaceuticals Industry industry

    Pharmaceuticals Industry