347 Stainless Steel

Overview: 347 Stainless Steel

347 stainless steel is a stabilized austenitic stainless steel alloy containing chromium and nickel. It is stabilized by the addition of columbium (niobium) and tantalum, which prevents carbide precipitation and enhances its corrosion resistance, especially in high-temperature environments. This alloy exhibits excellent resistance to intergranular corrosion, making it ideal for applications involving high heat and stress.

347 is commonly used in the aerospace, chemical, and petrochemical industries due to its ability to withstand high temperatures and corrosive environments. It is also known for its good mechanical properties, including high tensile strength and creep resistance.

Name 347 Stainless Steel
Stainless Steel Coil, Stainless Steel Sheet, Stainless Steel Plate
ASTM, GB, SUS, etc
Mill Origin
Tisco, Posco, etc.
Weight Per Coil
5/10/20MT or customized
Slit Edge/ Mill Edge
No.1, 1D, 2D, BA+PVC, No.4+PVC, Hairline+PVC, 8K/No.8, etc.
Delivery Time
Stock goods 7-15 days, Future goods within 25 days
Package Detail
Standard Sea-Worthy Packing
Please contact us to request

347 Stainless Steel Features

  • Excellent Corrosion Resistance: 347 offers outstanding corrosion resistance, comparable to that of 304 stainless steel, making it suitable for various environments.
  • Intergranular Corrosion Resistance: The alloy is stabilized with columbium (niobium) and tantalum, which prevent chromium carbide formation, providing excellent resistance to intergranular corrosion between 427°C and 816°C.
  • High-Temperature Performance: 347 maintains strength and creep resistance even in strong oxidizing environments at high temperatures up to 816°C.
  • Formability and Weldability: This alloy is easy to form and weld, making it versatile for a wide range of industrial applications.
  • Good Low-Temperature Toughness: It retains good toughness at low temperatures, ensuring reliable performance across various temperature ranges.

Overall, 347 offers similar performance to 321 stainless steel (304 stabilized with titanium) but with enhanced features, making it a superior choice for demanding applications.

  • Petrochemical, Food, and Paper Industries: Widely used in these industries due to its excellent corrosion resistance and durability.
  • Aerospace: Ideal for exhaust manifolds and branch pipes in aero engines, providing reliable performance under high-temperature conditions.
  • Turbine Compressors: Used in hot gas pipelines, ensuring stability and efficiency in turbine compressor operations.
  • High-Temperature Components: Suitable for parts that operate under light loads at temperatures up to 850°C, maintaining strength and integrity.
  • General Applications: Employed in various other applications where high temperature and corrosion resistance are essential.

347 Stainless Steel Application

347 Stainless Steel Tags

  • Inox 347
  • AISI 347
  • SUS 347
  • UNS S34700
  • Grade 347
  • Acero 347
  • 1.4550
  • Type 347

347 Stainless Steel Technical Datasheet


347 SS Composition

Grade Standard C Si Mn P S Ni Cr Nb

347 SS Properties of Mechanical

Grade Heat Treatment Temperature/°C Yield Strength Rp0.2(N/mm²) Tensile Strength Rm(N/mm²) Hardness/HRB Elongation(%)

Why Purchase 347 Stainless Steel from GHT

Reliable Inventory Assurance

Ever been in a bind due to an urgent need for substantial quantities of stainless steel coils, only to find your supplier’s inventory lacking? Such situations can disrupt your workflow and plans.

Our Advantage: With us, that scenario is a thing of the past.  Our inventory is consistently stocked to the brim, ensuring rapid fulfillment of even the largest orders, seamlessly aligning with your business timeline.

Varied Inventory Coil Specifications

The quest for stainless steel coils with precise specifications can often lead to dead ends. Finding a supplier who understands and meets these unique requirements is crucial.

Our Advantage: Our inventory is a testament to diversity, encompassing a variety of materials, thicknesses, and widths. We pride ourselves on being able to meet your specific project needs with pinpoint accuracy.

Tailored Stainless Steel Material Processing

You might have encountered situations where custom processing is needed, but finding the right supplier to meet your specific demands can be a challenge.

Our Advantage: Our robust processing capabilities are designed to cater to all your customization needs. Be it dimension adjustments, stainless steel finish surface treatments, or other specific requirements, we offer professional one-stop services.

Precision Shearing Services

Accurate shearing is crucial for the use of stainless steel coils, but not all suppliers can offer such precision services.

Our Advantage: Our shearing services are both professional and efficient, ensuring precise cuts as per your requirements, guaranteeing that the products meet your exact specifications.

Competitive Pricing

When searching for stainless steel coil suppliers, pricing is often a key consideration. You might have had to compromise on your ideal supplier due to high costs.

Our Advantage: Through effective cost control and optimized procurement processes, we ensure competitive pricing. This means choosing us not only gets you high-quality products but also services that offer great value for money.

Looking For 347 Stainless Steel Supplier

Send us a message to discuss your 347 needs. We always reply within 24 hours.

How To Pack 347 Sheet & Coil

In GHT, all of our stainless steel coils are packaged as per international standard to prevent any possible damage or loss. By default, for quantity less than 1 whole compete coil (our MOQ is 5 tons), we will use woven plastic bag to cover SS coils and then fix them upon wooden pallet for further protection. We can also package the SS coils as per your special requirement, though this can incur extra cost.

In GHT, all of our stainless steel sheets are packaged as per international standard to prevent any possible damage or loss. By default, we will use brown paper to cover SS sheets and then bundle them together onto wooden pallets. At times, upon some customers’ requests, we will also apply reinforced package with extra metal straps fixed on the four corners, though this can incur extra cost. For enhanced customer experience, we also accept customized package as per your requests.

347 Stainless Steel FAQs

A1: SS347 is used in applications requiring high temperature resistance and excellent corrosion resistance. Common uses include components for the petrochemical, food processing, and paper industries, as well as exhaust manifolds, turbine compressor hot gas pipelines, and parts for aero engines.

A2: 347 stainless steel contains niobium, which provides stabilization and prevents chromium carbide formation, improving its resistance to intergranular corrosion. This makes 347 more suitable for high-temperature applications compared to 304.

A3: Yes, 347 stainless steel is known for its good weldability. It can be welded using standard welding techniques and maintains its strength and corrosion resistance in the welded areas.

A4: 347 can withstand temperatures up to 850°C (1562°F), making it suitable for high-temperature applications and environments where oxidation resistance is critical.

A5: 347 exhibits excellent mechanical properties, including good low-temperature toughness, high creep resistance, and superior strength under high temperatures. These properties make it reliable for demanding applications.

A6: Yes, 347 has excellent oxidation resistance, which makes it suitable for use in environments exposed to air, water vapor, and high temperatures.

A7: 347 offers excellent corrosion resistance, comparable to 304 stainless steel. Its resistance to intergranular corrosion between 427°C and 816°C is particularly notable, making it ideal for high-temperature and corrosive environments.

A8: Yes, 347 is available in various forms, including sheets, plates, bars, pipes, and fittings, to suit different industrial and manufacturing needs.

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