SA240 Gr 434 (S43400) Stainless Steel Plate Supplier | ASME SA240 Specifications, Equivalent Materials, and Price

 

For projects requiring a material with enhanced corrosion resistance, good heat resistance, and cost-effectiveness for automotive and industrial applications, ASME SA240 Gr 434 (S43400) stainless steel plate is an excellent choice. Supplied by Gangsteel, a leading ASME SA240 stainless steel supplier in China, this ferritic stainless steel is renowned for its ASME SA240 Gr 434 corrosion resistance and suitability for high-temperature environments up to 815°C (1500°F), making it ideal for automotive trim, exhaust systems, and industrial components.

Gangsteel offers ASME SA240 Gr 434 stainless steel plate, sheet, bar, and custom components, fully compliant with ASME SA240 and ASTM A240 standards.

This page provides detailed insights into the ASME SA240 Gr 434 chemical composition, mechanical properties, equivalent materials, specifications, applications, and competitive ASME SA240 Gr 434 price per kg. Explore our ASME SA240 stainless sheet portfolio for related grades like ASME SA240 Gr 430, ASME SA240 Gr 436, and ASME SA240 Gr 439.


 

1. What is ASME SA240 Gr 434 (S43400)?

ASME SA240 Gr 434, also known as UNS S43400, is a ferritic stainless steel alloy with 16.0-18.0% chromium and 0.75-1.25% molybdenum, designed for enhanced corrosion resistance, particularly in chloride-containing environments, and good heat resistance. The molybdenum addition improves pitting and crevice corrosion resistance, making ASME SA240 Gr 434 material ideal for applications requiring durability in mildly corrosive and high-temperature conditions, such as automotive trim, exhaust systems, and industrial components.

Compared to ASME SA240 Gr 430, ASME SA240 Gr 434 offers superior corrosion resistance due to its molybdenum content, while providing better formability than ASME SA240 Gr 410S.

Gangsteel’s ASME SA240 Gr 434 stainless steel plate is engineered for industries seeking cost-effective, corrosion-resistant solutions, offering a robust alternative to grades like ASME SA240 Gr 409 or ASME SA240 Gr 444.

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2. ASME SA240 Gr 434 Chemical Composition

The ASME SA240 Gr 434 chemical composition, compliant with ASME SA240 standards, is optimized for enhanced corrosion resistance and heat resistance.

Element

Percentage (%)

Chromium (Cr)

16.0 – 18.0

Molybdenum (Mo)

0.75 – 1.25

Carbon (C)

≤ 0.12

Manganese (Mn)

≤ 1.0

Silicon (Si)

≤ 1.0

Phosphorus (P)

≤ 0.04

Sulfur (S)

≤ 0.03

Iron (Fe)

Balance (~82%)

Note: The molybdenum addition enhances ASME SA240 Gr 434’s resistance to pitting and crevice corrosion, offering superior performance compared to ASME SA240 Gr 430 in chloride-containing environments.

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3. ASME SA240 Gr 434 Mechanical Properties

The ASME SA240 Gr 434 mechanical properties, tested per ASME SA240, provide moderate strength, good ductility, and formability, making ASME SA240 Gr 434 stainless steel plate suitable for automotive and industrial applications.

Property

Value at 20°C

Tensile Strength (MPa)

≥ 450 (65 ksi)

Yield Strength (MPa)

≥ 240 (35 ksi)

Elongation (%)

≥ 22

Hardness (HRB)

≤ 89

Density

7.80 g/cm³ (0.282 lb/in³)

Note: Annealing at 760-815°C (1400-1500°F) optimizes UNS S43400 mechanical properties for corrosion resistance and formability. Contact Gangsteel for a detailed ASME SA240 Gr 434 technical data sheet.

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4. ASME SA240 Gr 434 Allowable Stress

The allowable stress values for ASME SA240 Gr 434, per ASME BPVC Section II, Part D, ensure reliable performance in high-temperature and corrosive applications.

Temperature (°C)

Allowable Stress (MPa)

100

150

200

140

300

130

400

120

500

110

600

100

Note: These values ensure ASME SA240 Gr 434 material performs reliably in automotive trim and industrial components under moderate temperatures.

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5. ASME SA240 Gr 434 Equivalent Materials

ASME SA240 Gr 434aligns with international standards for global compatibility.

Standard

Grade

UNS

S43400

W.Nr.

1.4113

EN

X6CrMo17-1

JIS

SUS 434

GB

1Cr17Mo

ASTM

A240 434

ASME

SA240 434

Note: ASME SA240 Gr 434 equivalent grades comply with ASME SA240, JIS, and GB standards, offering interchangeability with ASME SA240 Gr 436 for applications requiring higher corrosion resistance.

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6. ASME SA240 Gr 434 vs ASME SA240 Gr 430, ASME SA240 Gr 436, and ASME SA240 Gr 409

Choosing the right material is critical to your project’s success. Here’s how ASME SA240 Gr 434 compares to ASME SA240 Gr 430, ASME SA240 Gr 436, and ASME SA240 Gr 409:

Property

ASME SA240 Gr 434 (S43400)

ASME SA240 Gr 430 (S43000)

ASME SA240 Gr 436 (S43600)

ASME SA240 Gr 409 (S40900)

UNS Number

S43400

S43000

S43600

S40900

Type

Ferritic

Ferritic

Ferritic

Ferritic

Chromium Content

16.0-18.0%

16.0-18.0%

16.0-18.0%

10.5-11.75%

Molybdenum Content

0.75-1.25%

-

0.75-1.25%

-

Other Elements

-

-

Cb (5xC-0.80%)

Ti (6xC-0.75%)

Corrosion Resistance

Good, enhanced by Mo

Good in mild environments

Good, enhanced by Mo & Cb

Moderate

Heat Resistance

Up to 815°C (1500°F)

Up to 815°C (1500°F)

Up to 815°C (1500°F)

Up to 675°C (1250°F)

Strength

Moderate

Moderate

Moderate

Moderate

Weldability

Good

Good

Good

Good

Cost (USD/kg)

4-8

4-8

5-9

3-6

Applications

Automotive trim, exhaust

Appliances, decorative

Automotive exhaust, trim

Automotive exhaust

  • ASME SA240 Gr 434 vs ASME SA240 Gr 430: ASME SA240 Gr 434 offers enhanced corrosion resistance due to molybdenum, making it suitable for chloride-containing environments, while ASME SA240 Gr 430 is preferred for decorative applications.
  • ASME SA240 Gr 434 vs ASME SA240 Gr 436: ASME SA240 Gr 434 provides good corrosion resistance, while ASME SA240 Gr 436 has additional columbium for improved weldability and corrosion resistance in automotive exhaust systems.
  • ASME SA240 Gr 434 vs ASME SA240 Gr 409: ASME SA240 Gr 434 offers better corrosion resistance due to higher chromium and molybdenum, while ASME SA240 Gr 409 is more cost-effective for basic automotive exhaust applications.

Conclusion: Choose ASME SA240 Gr 434 for automotive trim and exhaust systems requiring enhanced corrosion resistance, ASME SA240 Gr 430 for decorative applications, ASME SA240 Gr 436 for advanced exhaust systems, or ASME SA240 Gr 409 for cost-effective automotive uses.

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7. ASME SA240 Gr 434 Specifications

Gangsteel provides ASME SA240 Gr 434 stainless steel plate, sheet, bar, and custom components to meet your project’s needs, compliant with ASME SA240 standards:

7.1 Plate and Sheet

  • Thickness: 0.5 mm to 100 mm (plate), 0.1 mm to 6 mm (sheet)
  • Width: Up to 4200 mm
  • Length: 2000 mm to 12000 mm (or coiled for sheet)
  • Surface Finish: Hot-rolled, cold-rolled, annealed, pickled, 2B, No.1, No.4, BA, or customized
  • Standards: ASME SA240, ASTM A240
  • Applications: ASME SA240 Gr 434 plate for automotive exhaust systems, UNS S43400 sheet for trim and decorative 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: ASME SA240 Gr 434 bar for industrial fittings

7.3 Custom Components

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

Note: Need a specific size or finish? Gangsteel offers custom solutions, including annealing at 760-815°C, to meet ASME SA240 requirements. Contact us for bespoke ASME SA240 Gr 434 material specifications.

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8. Applications of ASME SA240 Gr 434

ASME SA240 Gr 434is designed for industries requiring enhanced corrosion resistance and heat resistance. Key ASME SA240 Gr 434 applications include:

  • Automotive: ASME SA240 Gr 434 stainless steel plate for exhaust systems and decorative trim.
  • Industrial: UNS S43400 plate for heat shields and industrial components.
  • Construction: ASME SA240 Gr 434 sheet for structural components in mild corrosive environments.
  • Appliances: Components requiring corrosion resistance and aesthetic appeal.
  • Energy: ASME SA240 Gr 434 bar for low-temperature boiler fittings.

Note: Compared to ASME SA240 Gr 430, ASME SA240 Gr 434 offers improved corrosion resistance in chloride environments due to molybdenum.

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9. Price of ASME SA240 Gr 434

The ASME SA240 Gr 434 price per kg ranges from USD 4-8 per kg (FOB), influenced by:

  • Alloy Content: Chromium (16.0-18.0%) and molybdenum (0.75-1.25%) keep costs competitive compared to ASME SA240 Gr 436.
  • Market Demand: Demand in automotive and industrial sectors drives UNS S43400 price.
  • Product Form: ASME SA240 Gr 434 stainless steel plate may cost more than sheet due to processing complexity.
  • Global Supply Chain: Freight and availability impact ASME SA240 Gr 434 cost.

For a precise ASME SA240 Gr 434 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 ASME SA240 Gr 434 for various applications:

Note: These grades complement ASME SA240 Gr 434 in automotive, industrial, 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 ASME SA240 Gr 434 stainless steel plate is crafted to meet the stringent requirements of ASME SA240 standards, delivering exceptional performance in corrosive and high-temperature environments. With a minimum stock of 600 tons, we ensure availability for various sizes.

With a commitment to customer satisfaction, we offer:

  • Quality Assurance: Every ASME SA240 Gr 434 stainless steel plate complies with ASME SA240 and ASTM A240 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, including widths up to 4200 mm.
  • 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 ASME SA240 Gr 430 and ASME SA240 Gr 436.

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12. Conclusion

For projects requiring enhanced corrosion resistance, good heat resistance, and cost-effectiveness, ASME SA240 Gr 434 stainless steel plate from Gangsteel is your ideal solution.

Known as UNS S43400, its molybdenum-enhanced ferritic structure delivers excellent performance for automotive trim, exhaust systems, and industrial components, offering superior corrosion resistance compared to ASME SA240 Gr 430.

Available in versatile specifications (0.5-100 mm thickness, up to 4200 mm width) and equivalent grades (W.Nr. 1.4113, EN X6CrMo17-1, JIS SUS 434, GB 1Cr17Mo), Gangsteel provides quality at a competitive ASME SA240 Gr 434 price per kg (USD 4-8/kg).

Contact Gangsteeltoday for a quick quote on ASME SA240 Gr 434 price per kg or to request a detailed UNS S43400 technical data sheet.

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

 

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