Stainless Steel 321 is an austenitic steel alloy composed of 17% chromium, 9% nickel, and 2% molybdenum. The high levels of chromium improves the corrosion resistance when compared to 304 stainless steel. It also has higher creep strength at elevated temperatures. it has good formability due to its low carbon content.

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Due to their strength and corrosion resistance, Stainless Steel 321 Round Bars are widely used in various industries. They can be applied for a variety of applications such as valve stems, heat exchanger components, pump shafts, fasteners, conveyor rollers, nuclear reactor components, turbine parts, petrochemical equipment components and more. Moreover, these round bars can also be used for making tools like knives or saw blades due to their toughness.

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There are many benefits associated with using Stainless Steel 321H Round Bars instead of other materials like aluminum or brass. For starters, stainless steel provide superior strength compared to other metals due to its high tensile strength and yield strength. Furthermore, it also has excellent resistance against corrosion caused by exposure to moisture or chemicals which makes it ideal for use in harsh environments where other metals would quickly corrode away over time. Furthermore, because stainless steel is 100% recyclable it can be reused multiple times without losing any of its properties which helps reduce waste while being environmentally friendly.

SS 321/321H Round Bars

Stainless Steel 321/321H Round Bars

Stainless Steel 321 Round Bars offer many advantages when being used for fabrication projects. The high levels of chromium make this type of steel highly resistant to corrosion from both water and acidic materials. It is also highly resistant to oxidation or carburization up to 870°C (1600°F). This makes it ideal for use in applications that require welding or brazing due to their excellent weldability properties. Additionally, it can handle extreme temperatures without losing any of its strength or becoming brittle. It is also very malleable and easy to shape into whatever form you need it in without sacrificing any quality or durability.

These round bars can be used for a variety of purposes including automotive parts, medical equipment components, food processing equipment parts, chemical processing components, marine components such as shafts and valves, defense-related components like gun barrels and ammunition casings as well as aerospace components like rocket engines and aircraft exhaust systems. They are also commonly used in the petrochemical industry because they are able to withstand high temperatures without compromising on their integrity thanks to their ability to resist oxidation or carburization up 870°C (1600°F).

What is the Difference Between Stainless Steel 321/321H Round Bars?

Stainless Steel 321 offers excellent corrosion resistance & relatively high tensile strength, making it suitable for industrial applications that require corrosion resistance to moderate chlorides. Stainless Steel 321H has higher carbon content and increased hardenability, making it more convenient for high-temperature service than lower carbon grades of stainless steel.

What is the Stainless Steel 321 Round Bars Uses?

Stainless Steel 321 Round Bars are commonly used in various industrial applications, especially those requiring corrosion resistance. Common uses for these round bars include chemical processing equipment, industrial furnaces, heat exchangers, and piping systems. They are often used in pressure vessels, valves & pumps because of their high strength and excellent formability.

What are the Benefits of Stainless Steel 321H Round Bars Uses?

Stainless Steel 321H Round Bars offer several advantages compared to other types of steel. Their high-temperature strength and excellent creep resistance make them ideal for applications requiring superior strength and flexibility at elevated temperatures. They also have good formability & weldability, making them easy to work with and customize for specific applications.

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Stainless Steel 321/321H Bars Specification

Standard ASTM A276, A479 / ASME SA276, SA479

Range 3.17 MM TO 350 MM DIA

Diameter 25mm to 152mm

Size Tolerance h8, h9(DIN 671), h10, h11, ASTM A484, DIN 1013

Finish Bright, Polish & Black

Form Round, Square, Hex (A/F), Rectangle, Wire (Coil Form), Wiremesh, Billet, Ingot, Forging Etc.,

Condition Cold Drawn & Polished Cold Drawn, Centreless Ground & Polished

Other Services Machining (CNC), Centreless Grinding (CG), Heat Treatment, Anneling, Pickling, Polish, Rolling, Forging, Cutting, Bending, Minor Fabrication

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SUS 321/321H Steel Round Bar Equivalent Indian Standard

SS 321 1.4541 S32100 SUS 321 X6CrNiTi18-10
SS 321H 1.4878 S32109 SUS 321H X12CrNiTi18-9

ASTM A276 Stainless Steel 321/321H Cold Drawn Round Bar Chemical Composition

Grade C Mn Si P S Cr N Ni Ti
SS 321 0.08 max 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 - 12.00 5(C+N) – 0.70 max
SS 321H 0.04 – 0.10 2.0 max 1.0 max 0.045 max 0.030 max 17.00 - 19.00 0.10 max 9.00 – 12.00 4(C+N) – 0.70 max

ASME SA276 SS 321/321H Hot-Rolled Round Bars Mechanical Properties

Density Melting Point Tensile Strength Yield Strength (0.2%Offset) Elongation
8.0 g/cm3 1457 °C (2650 °F) Psi – 75000 , MPa – 515 Psi – 30000 , MPa – 205 35 %

Other Types of 321/321H Stainless Steel Round Bars & Rods

  • SS 321 Round Bar and Rod
  • SS 321H Square Bars and Rods
  • Stainless Steel 321 Hex Bars & Rods
  • SS 321H Flat Bars
  • Stainless Steel 321/321H Threaded Bars and Rods

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