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.
Minimum Order : 200 unit
Customization as per requiments
Size Range | 10 mm to 200 mm |
Length | 6000 mm |
Standards | Astm, Asme, Din, Nf, Jis, En, Ios |
Finished | Black, Bright, Cold Drawn, Polish, Polished, Centreless Ground |
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.
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.
Heat treated for maximum strength and impact resistance, ideal for automotive, heavy equipment, and defense sector parts like shafts and gear blanks.
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.
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