What is sa 240 type 255 Stainless?

SA240 Type 255 (S32550) Stainless Steel Plate Supplier | Specifications, Equivalent Materials, and Price

When your project requires a material that delivers exceptional strength, corrosion resistance, and durability in aggressive environments, SA240 Type 255 (S32550) stainless steel plate is a top-tier choice. Supplied by Gangsteel, a premier stainless steel supplier in China, this super duplex stainless steel is renowned for its outstanding SA240 Type 255 corrosion resistance in chloride-rich and acidic conditions, making it ideal for chemical processing, oil and gas, and marine applications.

Gangsteel provides SA240 Type 255 stainless steel plate, sheet, bar, and custom components, meeting ASME SA240 and ASTM A240 standards.

This page offers detailed insights into the SA240 Type 255 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive SA240 Type 255 price per kg. Explore our ASME SA240 stainless sheet portfolio for related grades like SA240 Type 2205, SA240 Type 2304, and SA240 Type 2507.

1. What is SA240 Type 255 (S32550)?

SA240 Type 255, also known as UNS S32550 or commonly referred to as Ferralium 255, is a super duplex stainless steel alloy with a balanced microstructure of approximately 50% austenite and 50% ferrite. It features high chromium (24.0-27.0%), nickel (4.5-6.5%), molybdenum (2.9-3.9%), and copper (1.5-2.5%), delivering superior strength, excellent corrosion resistance, and outstanding resistance to pitting and stress-corrosion cracking (SCC) in chloride-heavy environments like seawater.

SA240 Type 255 materialis ideal for applications requiring high mechanical strength and corrosion resistance, such as chemical reactors, offshore platforms, and pulp/paper equipment. Compared to SA240 Type 2507, SA240 Type 255 offers similar pitting resistance (PREN ~40) with added copper for enhanced resistance to sulfuric acid environments.

Gangsteel’s SA240 Type 255 stainless steel plate is engineered for industries needing robust performance, offering a versatile alternative to grades like SA240 Type 2205 or SA240 Gr 316.

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2. SA240 Type 255 Chemical Composition

The SA240 Type 255 chemical composition, compliant with ASME SA240, is optimized for superior corrosion resistance and strength in aggressive environments.

Note: The high chromium, molybdenum, and copper content give SA240 Type 255 a PREN of ~40, offering excellent pitting resistance comparable to SA240 Type 2507 and superior resistance to sulfuric acid compared to SA240 Type 2205.

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3. SA240 Type 255 Mechanical Properties

The SA240 Type 255 mechanical properties, tested per ASME SA240, provide high strength and good ductility, making SA240 Type 255 stainless steel plate ideal for high-stress applications.

Note: Solution annealing at 1025-1125°C (1877-2057°F) optimizes UNS S32550 mechanical properties for strength and corrosion resistance. Contact Gangsteel for a detailed SA240 Type 255 technical data sheet.

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4. SA240 Type 255 Allowable Stress

The allowable stress values for SA240 Type 255, per ASME BPVC Section II, Part D, ensure safe performance in corrosive and high-stress environments.

Note: These values ensure SA240 Type 255 material performs reliably in applications like chemical reactors and offshore platforms under moderate temperatures.

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5. SA240 Type 255 Equivalent Materials

SA240 Type 255aligns with international standards for global compatibility.

Note: SA240 Type 255 equivalent grades comply with ASME SA240, offering interchangeability with SA240 Type 2507 in similar applications but with enhanced sulfuric acid resistance due to copper content.

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6. SA240 Type 255 vs SA240 Type 2507, SA240 Type 2205, and SA240 Gr 316

Choosing the right stainless steel grade is critical to your project’s success. Here’s how SA240 Type 255 compares to SA240 Type 2507, SA240 Type 2205, and SA240 Gr 316:

• SA240 Type 255 vs SA240 Type 2507: SA240 Type 255 offers enhanced resistance to sulfuric acid due to copper content, while SA240 Type 2507 has slightly higher pitting resistance (PREN ~42) for seawater applications.
• SA240 Type 255 vs SA240 Type 2205: SA240 Type 255 provides better corrosion resistance and strength, while SA240 Type 2205 is more cost-effective for less aggressive environments.
• SA240 Type 255 vs SA240 Gr 316: SA240 Type 255 delivers higher strength and pitting resistance, while SA240 Gr 316 is better for high-temperature corrosion resistance.

Conclusion: Choose SA240 Type 255 for chemical and marine applications requiring sulfuric acid resistance, SA240 Type 2507 for severe chloride environments, SA240 Type 2205 for balanced performance, or SA240 Gr 316 for versatile corrosion resistance.

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7. SA240 Type 255 Specifications

Gangsteel provides SA240 Type 255 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 Type 255 plate for chemical reactors, UNS S32550 sheet for offshore platforms

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 Type 255 bar for fittings and 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 marine and chemical industries

Note: Need a specific size or finish? Gangsteel offers custom solutions, including annealing at 1025-1125°C. Contact us for bespoke SA240 Type 255 material specifications.

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8. Applications of SA240 Type 255

SA240 Type 255is designed for industries facing severe corrosion and high mechanical stress. Key SA240 Type 255 applications include:

• Chemical Processing: SA240 Type 255 stainless steel plate for reactors and tanks in sulfuric acid environments.
• Oil and Gas: UNS S32550 plate for offshore platforms and pipelines.
• Marine: SA240 Type 255 sheet for seawater piping and desalination systems.
• Pulp and Paper: SA240 Type 255 bar for digester components.
• Power Generation: Components for flue gas desulfurization systems.

Note: Compared to SA240 Type 2304, SA240 Type 255 offers superior corrosion resistance for aggressive chloride and acid environments.

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9. Price of SA240 Type 255

The SA240 Type 255 price per kg ranges from USD 10-16 per kg (FOB), influenced by:

• Alloy Content: High chromium (24.0-27.0%), molybdenum (2.9-3.9%), and copper increase costs compared to SA240 Type 2304.
• Market Demand: Strong demand in chemical and oil/gas industries drives UNS S32550 price.
• Product Form: SA240 Type 255 stainless steel plate may cost more than sheet due to processing complexity.
• Global Supply Chain: Freight and availability impact SA240 Type 255 cost.

For a precise SA240 Type 255 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 Type 255 for various 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 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 Type 255 in chemical, oil/gas, and marine 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 Type 255 stainless steel plate is crafted to meet the highest industry standards, delivering exceptional performance in corrosive environments.

With a commitment to customer satisfaction, we offer:

• Quality Assurance: Every SA240 Type 255 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 Type 2205 and SA240 Type 2507.

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12. Conclusion

For projects requiring exceptional strength and corrosion resistance in aggressive environments, SA240 Type 255 stainless steel plate from Gangsteel is your ideal solution.

Known as UNS S32550 or Ferralium 255, its super duplex structure delivers unmatched performance for chemical reactors, offshore platforms, and marine systems, offering superior sulfuric acid resistance compared to SA240 Type 2205.

Available in versatile specifications (0.5-100 mm thickness, up to 3000 mm width) and equivalent grades (W.Nr. 1.4507, EN X2CrNiMoCuN25-6-3), Gangsteel provides quality at a competitive SA240 Type 255 price per kg (USD 10-16/kg).

Contact Gangsteeltoday for a quick quote on SA240 Type 255 price per kg or to request a detailed UNS S32550 technical data sheet.

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