ASME SA240 Gr 347H (S34709) Stainless Steel Sheet

SA240 Gr 347H (S34709) Stainless Steel Plate Supplier | Specifications, Equivalent Materials, and Price

When your project demands a material that excels in high-temperature environments with superior creep resistance and corrosion resistance, SA240 Gr 347H (S34709) stainless steel plate is an outstanding choice. Supplied by Gangsteel, a leading stainless steel supplier in China, this high-carbon, columbium-stabilized austenitic stainless steel is renowned for its exceptional SA240 Gr 347H high-temperature strength and resistance to intergranular corrosion, making it ideal for aerospace, petrochemical, and power generation applications.

Gangsteel offers SA240 Gr 347H stainless steel plate, sheet, bar, and custom components, meeting ASME SA240 and ASTM A240 standards.

This page provides detailed insights into the SA240 Gr 347H chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive SA240 Gr 347H price per kg. Explore our ASME SA240 stainless sheet portfolio for related grades like SA240 Gr 347, SA240 Gr 348H, and SA240 Gr 904L.

1. What is SA240 Gr 347H (S34709)?

SA240 Gr 347H, also known as UNS S34709, is a high-carbon, columbium (niobium)-stabilized austenitic stainless steel with 17.0-19.0% chromium, 9.0-13.0% nickel, and a controlled carbon content (0.04-0.10%). It is designed for enhanced creep and rupture strength at high temperatures up to 850°C (1562°F), with excellent resistance to intergranular corrosion caused by sensitization during welding or prolonged heat exposure.

SA240 Gr 347H materialis ideal for applications requiring durability in high-temperature and corrosive environments, such as petrochemical reformers, aerospace components, and boiler tubes. Compared to SA240 Gr 347, SA240 Gr 347H offers superior creep resistance due to its higher carbon content, making it suitable for more demanding high-temperature applications.

Gangsteel’s SA240 Gr 347H stainless steel plate is engineered for industries needing reliable performance in extreme conditions, providing a robust alternative to grades like SA240 Gr 348H or SA240 Gr 334.

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2. SA240 Gr 347H Chemical Composition

The SA240 Gr 347H chemical composition, compliant with ASME SA240, is optimized for high-temperature creep resistance and corrosion resistance.

Note: The higher carbon content and columbium (niobium) stabilization enhance SA240 Gr 347H’s creep resistance and prevent intergranular corrosion, outperforming SA240 Gr 316 in high-temperature welded applications.

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3. SA240 Gr 347H Mechanical Properties

The SA240 Gr 347H mechanical properties, tested per ASME SA240, provide excellent strength and ductility at elevated temperatures, making SA240 Gr 347H stainless steel plate ideal for high-temperature applications.

Note: Solution annealing at 1050-1150°C (1922-2102°F) optimizes UNS S34709 mechanical properties for creep resistance and high-temperature stability. Contact Gangsteel for a detailed SA240 Gr 347H technical data sheet.

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4. SA240 Gr 347H Allowable Stress

The allowable stress values for SA240 Gr 347H, per ASME BPVC Section II, Part D, ensure reliable performance in high-temperature applications.

Note: These values ensure SA240 Gr 347H material performs reliably in petrochemical reformers and boiler tubes under prolonged high temperatures.

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5. SA240 Gr 347H Equivalent Materials

SA240 Gr 347Haligns with international standards for global compatibility.

Note: SA240 Gr 347H equivalent grades comply with ASME SA240, offering interchangeability with SA240 Gr 347 for applications requiring less creep resistance.

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6. SA240 Gr 347H vs SA240 Gr 347, SA240 Gr 348H, and SA240 Gr 904L

Choosing the right material is critical to your project’s success. Here’s how SA240 Gr 347H compares to SA240 Gr 347, SA240 Gr 348H, and SA240 Gr 904L:

• SA240 Gr 347H vs SA240 Gr 347: SA240 Gr 347H offers enhanced creep and rupture strength due to higher carbon content, while SA240 Gr 347 provides better weldability for less demanding high-temperature applications.
• SA240 Gr 347H vs SA240 Gr 348H: SA240 Gr 347H is similar but has higher cobalt content, while SA240 Gr 348H is optimized for nuclear applications with restricted cobalt levels.
• SA240 Gr 347H vs SA240 Gr 904L: SA240 Gr 347H excels in high-temperature applications, while SA240 Gr 904L offers superior corrosion resistance in acidic and seawater environments.

Conclusion: Choose SA240 Gr 347H for creep-resistant high-temperature applications, SA240 Gr 347 for general high-temperature uses, SA240 Gr 348H for nuclear applications, or SA240 Gr 904L for acid and seawater resistance.

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7. SA240 Gr 347H Specifications

Gangsteel provides SA240 Gr 347H stainless steel plate, sheet, bar, and custom components to meet your project’s needs:

7.1 Plate and Sheet

• Thickness: 0.5 mm to 100 mm (plate), 0.1 mm to 6 mm (sheet)
• Width: 1000 mm to 3000 mm
• Length: 2000 mm to 12000 mm (or coiled for sheet)
• Surface Finish: Hot-rolled, cold-rolled, annealed, pickled, 2B, No.1, or customized
• Standards: ASTM A240, ASME SA240
• Applications: SA240 Gr 347H plate for petrochemical reformers, UNS S34709 sheet for boiler tubes

7.2 Bar

• Diameter: 6 mm to 500 mm
• Length: Up to 12000 mm
• Finish: Hot-rolled, cold-drawn, centerless ground
• Standards: ASTM A479, ASME SA-479
• Applications: SA240 Gr 347H bar for high-temperature fasteners

7.3 Custom Components

• Types: Flanges (ASME B16.5), fittings, CNC-machined parts
• Tolerances: ±0.05 mm for precision components
• Applications: Tailored solutions for aerospace and petrochemical industries

Note: Need a specific size or finish? Gangsteel offers custom solutions, including annealing at 1050-1150°C. Contact us for bespoke SA240 Gr 347H material specifications.

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8. Applications of SA240 Gr 347H

SA240 Gr 347His designed for industries requiring high-temperature strength and corrosion resistance. Key SA240 Gr 347H applications include:

• Petrochemical: SA240 Gr 347H stainless steel plate for reformers and cracking furnaces.
• Aerospace: UNS S34709 plate for jet engine components and exhaust systems.
• Power Generation: SA240 Gr 347H sheet for boiler tubes and superheaters.
• Chemical Processing: SA240 Gr 347H bar for fittings in high-temperature reactors.
• Oil and Gas: Components for refining equipment in corrosive environments.

Note: Compared to SA240 Gr 348H, SA240 Gr 347H is more versatile for non-nuclear applications due to higher cobalt content.

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9. Price of SA240 Gr 347H

The SA240 Gr 347H price per kg ranges from USD 8-15 per kg (FOB), influenced by:

• Alloy Content: Moderate nickel (9.0-13.0%) and columbium keep costs lower than SA240 Gr 904L.
• Market Demand: Demand in petrochemical and aerospace industries drives UNS S34709 price.
• Product Form: SA240 Gr 347H stainless steel plate may cost more than sheet due to processing complexity.
• Global Supply Chain: Freight and availability impact SA240 Gr 347H cost.

For a precise SA240 Gr 347H price per kg or bulk discounts, contact Gangsteel.

We’ll ensure you get the best value for your project.

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10. Related Stainless Steel Grades

Gangsteel offers a wide range of ASME SA240 stainless sheet grades to complement SA240 Gr 347H for various applications:

• SA240 Gr 347: Better weldability for high-temperature applications.
• SA240 Gr 348: Low-cobalt for nuclear applications.
• SA240 Gr 348H: High-carbon for enhanced high-temperature strength in nuclear settings.
• SA240 Gr 334: High-temperature resistance for heating elements.
• SA240 Gr 317LM: Cost-effective corrosion resistance for acidic environments.
• SA240 Gr 317LMN: Nitrogen-enhanced for improved strength and corrosion resistance.
• SA240 Gr 904L: Superior sulfuric acid resistance for chemical applications.
• SA240 Type 2205: Balanced corrosion resistance for marine applications.
• SA240 Type 2304: Cost-effective for milder corrosive environments.
• SA240 Type 2507: Superior corrosion resistance for aggressive chloride environments.
• SA240 Type 255: Enhanced sulfuric acid resistance for chemical applications.
• SA240 Type 329: Duplex stainless steel for chemical and marine applications.
• SA240 Gr 201: Cost-effective for general applications.
• SA240 Gr 202: General corrosion resistance for decorative uses.
• SA240 Gr 301: High strength for springs and fasteners.
• SA240 Gr 301L: Low-carbon for improved weldability.
• SA240 Gr 301LN: Nitrogen-enhanced for strength and weldability.
• SA240 Gr 302: General-purpose austenitic stainless steel.
• SA240 Gr 304: Versatile for food and general industries.
• SA240 Gr 304H: High-temperature strength for heat exchangers.
• SA240 Gr 304L: Low-carbon for weldability in corrosive environments.
• SA240 Gr 304LN: Nitrogen-enhanced for strength.
• SA240 Gr 304N: High strength for structural applications.
• SA240 Gr 305: High nickel for deep drawing applications.
• SA240 Gr 309CB: High-temperature corrosion resistance.
• SA240 Gr 309H: High-temperature strength for furnaces.
• SA240 Gr 309HCB: Enhanced high-temperature performance.
• SA240 Gr 309S: Corrosion resistance for high-temperature applications.
• SA240 Gr 310CB: High-temperature strength with columbium.
• SA240 Gr 310H: High-temperature resistance for furnaces.
• SA240 Gr 310HCB: Enhanced high-temperature performance.
• SA240 Gr 310MOLN: Nitrogen-enhanced for urea production.
• SA240 Gr 310S: High-temperature corrosion resistance.
• SA240 Gr 316: Excellent corrosion resistance for marine applications.
• SA240 Gr 316CB: Columbium-stabilized for weldability.
• SA240 Gr 316H: High-temperature strength for chemical processing.
• SA240 Gr 316L: Low-carbon for enhanced weldability.
• SA240 Gr 316LN: Nitrogen-enhanced for strength and corrosion resistance.
• SA240 Gr 316N: High strength for structural applications.
• SA240 Gr 316Ti: Titanium-stabilized for high-temperature weldability.
• SA240 Gr 317: High corrosion resistance for chemical processing.
• SA240 Gr 317L: Low-carbon for acidic environments.
• SA240 Gr 415: High strength for oilfield and turbine applications.

Note: These grades complement SA240 Gr 347H in petrochemical, aerospace, and high-temperature applications. Contact Gangsteel for a full catalog to find the perfect material for your project.

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11. Why Choose Gangsteel?

At Gangsteel, we prioritize quality and reliability to ensure your project succeeds.

Our SA240 Gr 347H stainless steel plate is crafted to meet the highest industry standards, delivering exceptional performance in high-temperature and corrosive environments.

With a commitment to customer satisfaction, we offer:

• Quality Assurance: Every SA240 Gr 347H stainless steel plate complies with ASTM A240 and ASME SA240 standards, backed by EN 10204 3.1/3.2 certificates for complete confidence.
• Fast Delivery: Standard orders ship in 7-15 days, with expedited options to keep your project on schedule.
• Customization: Need a specific size or shape? We provide precision cutting (CNC, laser, waterjet), welding, and tailored heat treatments to meet your exact requirements.
• Global Supply: Serving clients in Saudi Arabia, UAE, India, Europe, and beyond, we ensure reliable delivery no matter where you are.
• Extensive Inventory: Explore our wide range of ASME SA240 stainless sheet grades, including SA240 Gr 347 and SA240 Gr 348H.

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12. Conclusion

For projects requiring superior creep resistance and high-temperature corrosion resistance, SA240 Gr 347H stainless steel plate from Gangsteel is your ideal solution.

Known as UNS S34709, its high-carbon, columbium-stabilized austenitic structure delivers unmatched performance for petrochemical reformers, aerospace components, and boiler tubes, offering enhanced creep strength compared to SA240 Gr 347.

Available in versatile specifications (0.5-100 mm thickness, up to 3000 mm width) and equivalent grades (W.Nr. 1.4961, EN X6CrNiNb18-12), Gangsteel provides quality at a competitive SA240 Gr 347H price per kg (USD 8-15/kg).

Contact Gangsteeltoday for a quick quote on SA240 Gr 347H price per kg or to request a detailed UNS S34709 technical data sheet.

Browse our ASME SA240 stainless sheet portfolio to find the perfect solution for your high-temperature and corrosion-resistant needs!