409 Stainless Steel Coil and Sheet

409 stainless steel is a titanium-stabilized chromium stainless steel, known for its excellent high-temperature resistance and corrosion resistance, which makes it widely used in automotive exhaust systems.

409 Stainless Steel Coil and Sheet Basic Information

Sanmei Metal Stainless Steel inventory includes 409 in coil and sheet.

409 is equivalent to

  • ASTM: 409
  • AISI: 409
  • JIS: SUS409
  • EN: 1.4512
  • DIN: X2CrTi12
  • UNS: S40900

409 Stainless Steel Processing

409 Stainless Steel Mechanical Property and Physical Property

409 Stainless Steel Chemical Composition

BUY YOUR 409

Why Choose 409 Stainless Steel?

409 stainless steel is a titanium-stabilized chromium stainless steel widely used in automotive exhaust systems due to its excellent high-temperature resistance and corrosion resistance.

Outstanding High-Temperature and Corrosion Resistance

409 stainless steel exhibits excellent resistance to high temperatures and corrosion, making it ideal for automotive exhaust systems.

Cost-Effective

 The performance of 409 stainless steel is exceptional, and its relatively low cost makes it more economical and affordable.

BUY YOUR 409

304 vs 409 Stainless Steel: Comparison for Exhaust Applications

Takeaway

For High-Performance Exhaust Systems:

Choose 304 Stainless Steel for its superior corrosion resistance, especially in environments exposed to salt or industrial pollutants. This choice is ideal for customers seeking long-term durability and performance.


For Standard Automotive Exhaust Systems:

Choose 409 Stainless Steel due to its good high-temperature resistance and cost-effectiveness. It is suitable for most automotive applications where extreme environmental exposure is not a concern, providing a balance between performance and affordability.

Properties Comparison:

Property

304 Stainless Steel

409 Stainless Steel

Composition

18-20% Cr, 8-12% Ni, ≤0.08% C

10.5-11.75% Cr, ≤0.03% C

Corrosion Resistance

Excellent in various environments

Good, particularly in high-temperature exhaust conditions

Temperature Resistance

Up to 870°C (1598°F) in continuous service

Up to 675°C (1247°F) in continuous service

Formability

Excellent

Good

Weldability

Excellent

Good

Magnetic Properties

Non-magnetic in annealed condition

Slightly magnetic

Cost

Higher

Lower

Application in Exhaust Systems:

304 Stainless Steel:

Advantages: Offers superior corrosion resistance, particularly in marine or industrial environments. Excellent formability and weldability make it suitable for complex shapes and joints in exhaust systems.

Disadvantages: Higher cost compared to 409 stainless steel.

Typical Use: Ideal for high-performance and long-lasting exhaust systems, especially where the exhaust system may be exposed to harsh environments or salt (e.g., coastal areas).

 

409 Stainless Steel:

Advantages: Good oxidation and corrosion resistance at high temperatures, making it suitable for automotive exhaust systems. It is more cost-effective than 304, providing a good balance between performance and price.

Disadvantages: Lower overall corrosion resistance compared to 304, and slightly less formability and weldability.

Typical Use: Commonly used in standard automotive exhaust systems where cost considerations are important, and the exhaust system does not face extremely harsh environmental conditions.

Want to Know the Differences between 409 and 409L?

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Sanmei's 409 Stainless Steel Coil and Shhet Specification

For Coil

TypeWidth  (mm)Weight  (MT)Thickness  (mm)
409 Coil1000, 1219, 1240, 1500 or Customized3-100.15-3.0

For Sheets

TypeWidth (mm)Length (mm)Thickness (mm)
409 Sheets1000, 1219, 1240, 1500 or Customized2000, 2438, 2500, 3000, 30480.3-3.0 

Basic Surfaces for Stainless Steel Coils and Sheets

The basic finish options for 201, 304, 304L, 316, 316L, and 430, etc. stainless steel coils and sheets include 2B, BA, No. 1, and No. 4 finishes. Please get in touch with our professional sales team for details on other grades and finishes.

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Packing and Loading

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Plenty of Decorative Finishes for Your Stainless Steel Sheet

including NO.1, 2B, BA, NO.4, 8K, Hairline, Stamped, PVD color coating, Antique, Anti-Finger Print, Laminatd, Emboss ect.
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Stainless Steel Coil Surface Treatment

The finished stainless steel coil is a powerful solution to the problems of inconsistent styles and discontinuous colors.
including NO.1, 2B, BA, NO.4, 8K, Hairline, brushed and ect.
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shearing

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Stainless Steel is Everywhere

Stianless Steel is an indispensable material across a wide spectrum of industries, from food processing and medical equipment to household goods, construction, and industrial applications.

Food Grade Stianless Steel
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