SA240 Gr 334 (S33400) Stainless Steel Plate Supplier | Specifications, Equivalent Materials, and Price

 

When your project requires a material that excels in high-temperature environments with excellent oxidation and corrosion resistance, SA240 Gr 334 (S33400) stainless steel plate is a top choice. Supplied by Gangsteel, a leading stainless steel supplier in China, this austenitic stainless steel is renowned for its outstanding SA240 Gr 334 high-temperature performance and resistance to scaling, making it ideal for heating elements, electrical components, and industrial furnaces.

Gangsteel offers SA240 Gr 334 stainless steel plate, sheet, bar, and custom components, meeting ASME SA240 and ASTM A240 standards.

This page provides detailed insights into the SA240 Gr 334 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive SA240 Gr 334 price per kg. Explore our ASME SA240 stainless sheet portfolio for related grades like SA240 Gr 317LM, SA240 Gr 317LMN, and SA240 Gr 904L.


 

1. What is SA240 Gr 334 (S33400)?

SA240 Gr 334, also known as UNS S33400, is an austenitic stainless steel alloy with high chromium (18.0-20.0%), nickel (19.0-21.0%), and additions of aluminum (0.15-0.60%) and titanium (0.15-0.60%), designed for superior high-temperature oxidation resistance and strength. Its composition makes SA240 Gr 334 material ideal for applications requiring stability in oxidative and corrosive environments up to 900°C (1652°F), such as heating elements and furnace components.

Compared to SA240 Gr 800H, SA240 Gr 334 offers enhanced resistance to scaling due to its aluminum content, though it may have slightly lower creep strength at extreme temperatures.

Gangsteel’s SA240 Gr 334 stainless steel plate is tailored for industries needing reliable high-temperature performance, offering a specialized alternative to grades like SA240 Gr 347 or SA240 Gr 904L.

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2. SA240 Gr 334 Chemical Composition

The SA240 Gr 334 chemical composition, compliant with ASME SA240, is optimized for high-temperature oxidation resistance and corrosion resistance.

Element

Percentage (%)

Chromium (Cr)

18.0 – 20.0

Nickel (Ni)

19.0 – 21.0

Aluminum (Al)

0.15 – 0.60

Titanium (Ti)

0.15 – 0.60

Carbon (C)

≤ 0.08

Manganese (Mn)

≤ 2.0

Silicon (Si)

≤ 1.0

Phosphorus (P)

≤ 0.045

Sulfur (S)

≤ 0.03

Iron (Fe)

Balance (~60%)

Note: The high chromium and nickel content, combined with aluminum and titanium, provide SA240 Gr 334 with excellent resistance to scaling and oxidation, outperforming SA240 Gr 316 in high-temperature oxidative environments.

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3. SA240 Gr 334 Mechanical Properties

The SA240 Gr 334 mechanical properties, tested per ASME SA240, offer a balance of strength and ductility, making SA240 Gr 334 stainless steel plate suitable for high-temperature applications.

Property

Value at 20°C

Value at 871°C (1600°F)

Tensile Strength (MPa)

≥ 485 (70 ksi)

≥ 300 (44 ksi)

Yield Strength (MPa)

≥ 170 (25 ksi)

≥ 120 (17 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 S33400 mechanical properties for high-temperature performance. Contact Gangsteel for a detailed SA240 Gr 334 technical data sheet.

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4. SA240 Gr 334 Allowable Stress

The allowable stress values for SA240 Gr 334, per ASME BPVC Section II, Part D, ensure reliable performance in high-temperature applications.

Temperature (°C)

Allowable Stress (MPa)

100

160

200

150

300

140

400

130

500

120

600

110

700

100

800

90

Note: These values ensure SA240 Gr 334 material performs reliably in heating elements and furnace components under high temperatures.

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5. SA240 Gr 334 Equivalent Materials

SA240 Gr 334aligns with international standards for global compatibility.

Standard

Grade

UNS

S33400

W.Nr.

1.4361

EN

X8CrNiAlTi20-20

ASTM

A240 334

ASME

SA240 334

Note: SA240 Gr 334 equivalent grades comply with ASME SA240, offering interchangeability with SA240 Gr 347 in applications requiring high-temperature corrosion resistance but with enhanced scaling resistance.

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6. SA240 Gr 334 vs SA240 Gr 317LMN, SA240 Gr 904L, and SA240 Gr 347

Choosing the right material is critical to your project’s success. Here’s how SA240 Gr 334 compares to SA240 Gr 317LMN, SA240 Gr 904L, and SA240 Gr 347:

Property

SA240 Gr 334 (S33400)

SA240 Gr 317LMN (S31726)

SA240 Gr 904L (N08904)

SA240 Gr 347 (S34700)

UNS Number

S33400

S31726

N08904

S34700

Type

Austenitic

Austenitic

Austenitic

Austenitic

Nickel Content

19.0-21.0%

13.0-17.5%

23.0-28.0%

9.0-13.0%

Chromium Content

18.0-20.0%

17.0-20.0%

19.0-23.0%

17.0-19.0%

Molybdenum Content

-

4.0-5.0%

4.0-5.0%

-

Other Elements

Al (0.15-0.60%), Ti

N (0.10-0.20%)

Cu (1.0-2.0%)

Nb (≤1.0%)

PREN

-

~33-35

~35

-

Corrosion Resistance

Good in oxidation

Superior in acids, chlorides

Excellent in acids, seawater

Good in high temps

Strength

Moderate

Moderate

Moderate

Moderate

Temp Range

Up to 900°C (1652°F)

Up to 400°C (752°F)

Up to 400°C (752°F)

Up to 850°C (1562°F)

Cost (USD/kg)

8-15

9-16

15-30

7-14

Applications

Heating elements, furnaces

Chemical, pulp/paper, marine

Chemical, marine

Aerospace, chemical

  • SA240 Gr 334 vs SA240 Gr 317LMN: SA240 Gr 334 excels in high-temperature oxidation resistance, while SA240 Gr 317LMN offers superior corrosion resistance in acidic and chloride environments.
  • SA240 Gr 334 vs SA240 Gr 904L: SA240 Gr 334 is designed for high-temperature applications, while SA240 Gr 904L provides better resistance to sulfuric acid and seawater.
  • SA240 Gr 334 vs SA240 Gr 347: SA240 Gr 334 offers enhanced scaling resistance due to aluminum, while SA240 Gr 347 is stabilized for high-temperature corrosion resistance in chemical applications.

Conclusion: Choose SA240 Gr 334 for high-temperature heating elements, SA240 Gr 317LMN for acidic and chloride environments, SA240 Gr 904L for sulfuric acid resistance, or SA240 Gr 347 for stabilized high-temperature applications.

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7. SA240 Gr 334 Specifications

Gangsteel provides SA240 Gr 334 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 334 plate for heating elements, UNS S33400 sheet for furnace components

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 334 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 furnace and electrical industries

Note: Need a specific size or finish? Gangsteel offers custom solutions, including annealing at 1050-1150°C. Contact us for bespoke SA240 Gr 334 material specifications.

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8. Applications of SA240 Gr 334

SA240 Gr 334is designed for industries requiring high-temperature oxidation resistance. Key SA240 Gr 334 applications include:

  • Electrical Components: SA240 Gr 334 stainless steel plate for heating elements and resistors.
  • Furnaces: UNS S33400 plate for radiant tubes and furnace linings.
  • Industrial Heating: SA240 Gr 334 sheet for heat exchanger components.
  • Power Generation: SA240 Gr 334 bar for high-temperature fittings.
  • Chemical Processing: Components for oxidative environments.

Note: Compared to SA240 Gr 347H, SA240 Gr 334 offers superior scaling resistance due to aluminum content.

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9. Price of SA240 Gr 334

The SA240 Gr 334 price per kg ranges from USD 8-15 per kg (FOB), influenced by:

  • Alloy Content: Moderate nickel (19.0-21.0%) and aluminum additions keep costs lower than SA240 Gr 904L.
  • Market Demand: Demand in electrical and furnace industries drives UNS S33400 price.
  • Product Form: SA240 Gr 334 stainless steel plate may cost more than sheet due to processing complexity.
  • Global Supply Chain: Freight and availability impact SA240 Gr 334 cost.

For a precise SA240 Gr 334 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 334 for various applications:

Note: These grades complement SA240 Gr 334 in high-temperature, electrical, 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 334 stainless steel plate is crafted to meet the highest industry standards, delivering exceptional performance in high-temperature environments.

With a commitment to customer satisfaction, we offer:

  • Quality Assurance: Every SA240 Gr 334 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 348.

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12. Conclusion

For projects requiring superior high-temperature oxidation resistance and strength, SA240 Gr 334 stainless steel plate from Gangsteel is your ideal solution.

Known as UNS S33400, its aluminum-enhanced austenitic structure delivers unmatched performance for heating elements, furnace components, and electrical applications, offering superior scaling resistance compared to SA240 Gr 347.

Available in versatile specifications (0.5-100 mm thickness, up to 3000 mm width) and equivalent grades (W.Nr. 1.4361, EN X8CrNiAlTi20-20), Gangsteel provides quality at a competitive SA240 Gr 334 price per kg (USD 8-15/kg).

Contact Gangsteeltoday for a quick quote on SA240 Gr 334 price per kg or to request a detailed UNS S33400 technical data sheet.

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

 

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