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347 Stainless Steel

Discover the Benefits of 347 Stainless Steel for Your Next Project

What is 347 stainless steel and how is it different from other steels?

If you’re looking for a stainless steel material that offers superior corrosion resistance and excellent high-temperature performance, then 347 round bar stock may be the perfect choice. This material is a niobium-stabilized chromium-nickel austenitic steel that is similar to 304 stainless steel in terms of its corrosion resistance.

However, where 347 stainless steel really shines is in its ability to perform at high temperatures. This material is often used in applications that involve temperatures between 800 to 1500°F, where it is stabilized against chromium carbide precipitation. This prevents the material from experiencing the negative effects of carbide precipitation, which can lead to intergranular corrosion and reduced mechanical properties.

One of the key benefits of 347 round bar is its exceptional intergranular corrosion resistance, even after exposure to high temperatures. This material also boasts high creep and stress rupture properties, making it ideal for use in demanding environments. Additionally, the 347 stainless bar stock exhibits good low-temperature toughness and is non-magnetic in the annealed condition.

Steel Purchaser

347 Round Bar Chemical Properties

The chemical composition of 347 stainless steel includes carbon, chromium, nickel, manganese, silicon, phosphorus, sulfur, and niobium. With a carbon content of just 0.08%, this material has a low susceptibility to intergranular corrosion. Chromium and nickel provide excellent corrosion resistance, while niobium plays a key role in stabilizing the material against carbide precipitation.

In summary, 347 round bar is a high-performance material that offers exceptional corrosion resistance, high-temperature performance, and excellent mechanical properties. Its unique combination of properties makes it an ideal choice for a variety of applications, including chemical processing, aerospace, and high-temperature environments.


As such, it is now understandable why this type of alloy steel is sought after getting a quick review of its components.

Consequently, its high machinability is highlighted as it is commonly combined with sulfur to further improve its machinability and make carburizing processes more effective.

With its excellent machinability, this even elevated this alloy steel’s prominence among industries.

Fortunately, Advance Grinding Services never runs out of 4140 alloy steel bars and can very much supply your needs especially if you are operating in the Illinois area!


Density 7.7-8.0
Tensile Strength 95000 psi
Yield Strength 60200 psi
Hardness (Brinell) 197
Hardness (Knoop) 219
Hardness (Rockwell) 92
Hardness (Vickers) 207
Machinability 65

347 Stainless Steel Applications

347 stainless steel round bars are widely used in the Midwest due to their excellent toughness, high fatigue strength, and machinability. Made of high-quality, corrosion-resistant stainless steel, this 1.00-inch diameter and 6.00-inch long bar weigh 3,700 pounds per cubic foot when fully loaded. It has many uses such as forged steel construction, auto parts, machine components, and construction materials.

The 347 round bar has many uses, including but not limited to:

  • Forged steel construction
  • Auto parts
  • Machine components
  • Construction materials

The 347 round bar is also suitable for use in the food industry due to its high resistance to corrosion and oxidation. With a carbon content of 0.08 percent and a chromium content of 13.5 percent, it is ideal for use in various environments such as marine or chemical environments. These bars are also easily machinable, making them suitable for use as structural components or fittings on machines and equipment.


Elevate Your Project with the 347 Stainless Steel

Looking for top-quality 347 stainless steel round bar stock to help you keep up with the demands of your business or latest project? Look no further than Advance Grinding – your trusted supplier of high-performance metals.

At Advance Grinding, we understand the importance of supplying our clients with quality materials that they can rely on. That’s why we take pride in offering the best 347 round bar stock in the industry. Our material is forged to the highest standards, ensuring exceptional performance in demanding applications.

With our commitment to quality, you can trust us to provide you with top-tier, high-quality metals that will meet and exceed your expectations. Whether you need materials for chemical processing, aerospace, or high-temperature environments, we’ve got you covered.

Ready to take your business to the next level? Contact us today at Advance Grinding for a quote on the alloy that you need. Our team of experts is always on hand to answer any questions you may have and to provide you with the guidance and support you need to succeed. With our high-quality materials, you’ll be equipped to take on any project with confidence and ease.