SA240 Gr 904L (N08904) Stainless Steel Plate Supplier | Specifications, Equivalent Materials, and Price

 

When your project demands exceptional corrosion resistance in aggressive environments, SA240 Gr 904L (N08904) stainless steel plate is a top-tier choice. Supplied by Gangsteel, a leading stainless steel supplier in China, this austenitic stainless steel is renowned for its superior SA240 Gr 904L corrosion resistance in sulfuric acid, seawater, and chloride-rich conditions.

Gangsteel offers SA240 Gr 904L stainless steel plate, sheet, bar, and custom components, meeting ASME SA240 and ASTM A240 standards.

This page provides detailed insights into the SA240 Gr 904L chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive SA240 Gr 904L price per kg. Explore our ASME SA240 stainless sheet portfolio for related grades like SA240 Gr 800, SA240 Gr 800H, and SA240 Type 2205.


 

1. What is SA240 Gr 904L (N08904)?

SA240 Gr 904L, also known as UNS N08904, is a low-carbon, high-nickel austenitic stainless steel with 23.0-28.0% nickel, 19.0-23.0% chromium, and 4.0-5.0% molybdenum, designed for superior corrosion resistance in acidic and chloride-heavy environments. Its low carbon content ensures excellent weldability, making SA240 Gr 904L material ideal for chemical processing, marine applications, and pulp/paper industries.

Compared to SA240 Type 2205, SA240 Gr 904L offers comparable corrosion resistance (PREN ~35) but excels in sulfuric acid environments due to its copper content.

Gangsteel’s SA240 Gr 904L stainless steel plate is crafted for demanding corrosive environments, offering a cost-effective alternative to grades like SA240 Type 2507 or SA240 Type 255.

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2. SA240 Gr 904L Chemical Composition

The SA240 Gr 904L chemical composition, compliant with ASME SA240, is optimized for corrosion resistance in acidic and chloride-rich environments.

Element

Percentage (%)

Nickel (Ni)

23.0 – 28.0

Chromium (Cr)

19.0 – 23.0

Molybdenum (Mo)

4.0 – 5.0

Copper (Cu)

1.0 – 2.0

Iron (Fe)

Balance (~45%)

Carbon (C)

≤ 0.02

Manganese (Mn)

≤ 2.0

Silicon (Si)

≤ 1.0

Phosphorus (P)

≤ 0.045

Sulfur (S)

≤ 0.035

Note: The high nickel, molybdenum, and copper content give SA240 Gr 904L a PREN of ~35, offering superior corrosion resistance compared to SA240 Gr 316 (PREN ~24) in sulfuric acid and chloride environments.

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3. SA240 Gr 904L Mechanical Properties

The SA240 Gr 904L mechanical properties, tested per ASME SA240, provide a balance of strength and ductility, making SA240 Gr 904L stainless steel plate ideal for chemical and marine applications.

Property

Value at 20°C

Value at 204°C (400°F)

Tensile Strength (MPa)

≥ 490 (71 ksi)

≥ 450 (65 ksi)

Yield Strength (MPa)

≥ 220 (32 ksi)

≥ 200 (29 ksi)

Elongation (%)

≥ 35

≥ 40

Hardness (HRB)

≤ 90

-

Density

8.00 g/cm³ (0.289 lb/in³)

-

Note: Solution annealing at 1050-1150°C (1922-2102°F) optimizes UNS N08904 mechanical properties. Contact Gangsteel for a detailed SA240 Gr 904L technical data sheet.

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4. SA240 Gr 904L Allowable Stress

The allowable stress values for SA240 Gr 904L, per ASME BPVC Section II, Part D, ensure reliable performance in corrosive environments.

Temperature (°C)

Allowable Stress (MPa)

100

165

200

150

300

135

400

120

500

105

Note: These values ensure SA240 Gr 904L material performs reliably in chemical reactors and marine equipment under moderate temperatures.

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5. SA240 Gr 904L Equivalent Materials

SA240 Gr 904Laligns with international standards for global compatibility.

Standard

Grade

UNS

N08904

W.Nr.

1.4539

EN

X1NiCrMoCu25-20-5

ASTM

A240 904l

ASME

SA240 904l

Note: SA240 Gr 904L equivalent grades comply with ASME SA240, offering interchangeability with SA240 Type 2205 in less demanding chloride environments but with enhanced sulfuric acid resistance.

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6. SA240 Gr 904L vs SA240 Gr 800H, SA240 Type 2205, and SA240 Type 2507

Choosing the right material is critical to your project’s success. Here’s how SA240 Gr 904L compares to SA240 Gr 800H, SA240 Type 2205, and SA240 Type 2507:

Property

SA240 Gr 904L (N08904)

SA240 Gr 800H (N08810)

SA240 Type 2205 (S31803)

SA240 Type 2507 (S32750)

UNS Number

N08904

N08810

S31803

S32750

Type

Austenitic

Nickel-Iron-Chromium

Duplex

Super Duplex

Nickel Content

23.0-28.0%

30.0-35.0%

4.5-6.5%

6.0-8.0%

Chromium Content

19.0-23.0%

19.0-23.0%

21.0-23.0%

24.0-26.0%

Molybdenum Content

4.0-5.0%

-

2.5-3.5%

3.0-5.0%

PREN

~35

-

~35

~42

Corrosion Resistance

Excellent in acids, seawater

Excellent in oxidation, creep

Excellent in chlorides, seawater

Superior in chlorides, seawater

Strength

Moderate

High at high temps

High

Very High

Temp Range

Up to 400°C (752°F)

Up to 1100°C (2012°F)

Up to 300°C (572°F)

Up to 300°C (572°F)

Cost (USD/kg)

15-30

16-28

8-15

10-18

Applications

Chemical, marine

Furnaces, petrochemical

Marine, oil/gas, chemical

Offshore, chemical, seawater

  • SA240 Gr 904L vs SA240 Gr 800H: SA240 Gr 904L excels in acid and seawater corrosion resistance, while SA240 Gr 800H is better for high-temperature creep resistance.
  • SA240 Gr 904L vs SA240 Type 2205: SA240 Gr 904L offers superior sulfuric acid resistance, while SA240 Type 2205 provides higher strength for chloride environments.
  • SA240 Gr 904L vs SA240 Type 2507: SA240 Gr 904L is more cost-effective for acid corrosion, while SA240 Type 2507 excels in severe chloride environments.

Conclusion: Choose SA240 Gr 904L for acid and seawater corrosion resistance, SA240 Gr 800H for high-temperature creep resistance, SA240 Type 2205 for balanced chloride resistance, or SA240 Type 2507 for severe chloride environments.

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7. SA240 Gr 904L Specifications

Gangsteel provides SA240 Gr 904L 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 904L plate for chemical reactors, UNS N08904 sheet for marine equipment

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 904L 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 chemical and marine industries

Note: Need a specific size or finish? Gangsteel offers custom solutions, including annealing at 1050-1150°C. Contact us for bespoke SA240 Gr 904L material specifications.

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8. Applications of SA240 Gr 904L

SA240 Gr 904Lis designed for industries where corrosion is a constant challenge. Key SA240 Gr 904L applications include:

  • Chemical Processing: SA240 Gr 904L stainless steel plate for reactors and heat exchangers in sulfuric acid environments.
  • Marine: UNS N08904 plate for seawater piping and shipbuilding components.
  • Pulp and Paper: SA240 Gr 904L sheet for bleach plant equipment.
  • Oil and Gas: SA240 Gr 904L bar for fittings in offshore platforms.
  • Pharmaceutical: Components for high-purity systems.

Note: Compared to SA240 Type 255, SA240 Gr 904L offers similar corrosion resistance but lower strength, making it ideal for less mechanically demanding applications.

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9. Price of SA240 Gr 904L

The SA240 Gr 904L price per kg ranges from USD 15-30 per kg (FOB), influenced by:

  • Alloy Content: High nickel (23.0-28.0%) and molybdenum (4.0-5.0%) increase costs compared to SA240 Type 2205.
  • Market Demand: Strong demand in chemical and marine industries drives UNS N08904 price.
  • Product Form: SA240 Gr 904L stainless steel plate may cost more than sheet due to processing complexity.
  • Global Supply Chain: Freight and availability impact SA240 Gr 904L cost.

For a precise SA240 Gr 904L 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 904L for various applications:

Note: These grades complement SA240 Gr 904L in chemical, marine, and corrosion-resistant 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 904L 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 Gr 904L 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 800 and SA240 Gr 800H.

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12. Conclusion

For projects where corrosion resistance in acidic and chloride-heavy environments is critical, SA240 Gr 904L stainless steel plate from Gangsteel is your ideal solution.

Known as UNS N08904, its high nickel and molybdenum content deliver unmatched performance for chemical reactors, marine piping, and pulp/paper equipment, 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. 1.4539, EN X1NiCrMoCu25-20-5), Gangsteel provides quality at a competitive SA240 Gr 904L price per kg (USD 15-30/kg).

Contact Gangsteeltoday for a quick quote on SA240 Gr 904L price per kg or to request a detailed UNS N08904 technical data sheet.

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

 

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