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409L Stainless Steel Bar

5-50mm diameter, ultra-low carbon, exhaust pipe brackets

409L stainless steel bar is a low-cost ferritic stainless steel with very low carbon content. It has good weldability, oxidation resistance, and corrosion resistance in automotive exhaust environments, widely used in automotive parts and industrial equipment.

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  • Cost-Effective

    Very low nickel (≤0.5%), price only 60–70% of 304 stainless steel.

  • Moderate Corrosion Resistance

    10.5–11.75% Cr resists automotive exhaust corrosion, stable in freshwater and air.

  • Lightweight & Formable

    Density 7.7 g/cm³, better cold forming than martensitic steel, ideal for stamping.

Product Specifications

Chemical Composition (GB/T 20878-2007)
Element C Si Mn P S Cr Ti
Content % ≤0.030 ≤1.0 ≤1.0 ≤0.045 ≤0.030 10.5–11.75 6*(C+N)–0.75
Physical & Mechanical Properties

Physical

  • Density 7.7 g/cm³
  • Melting Point 1427–1510℃
  • Thermal Conductivity 26 W/(m·K)
  • Strong magnetic

Mechanical (annealed)

  • Tensile strength ≥360MPa
  • Yield strength ≥175MPa
  • Elongation ≥20%
  • Hardness ≤183HB
Specifications & Supply Dimensions
  • Diameter: 10–100mm (Cold-drawn ±0.05mm, Hot-rolled ±0.1mm)
  • Length: 4–6m
  • Surface: Black (hot-rolled), Bright (cold-drawn), optional zinc plating or anti-rust treatment

Pricing Calculation

Workshop & Manufacturing Machine

Stainless Steel Bar Inventory Racking System

Spectrometer for Alloy Composition Analysis

Finished Stainless Steel Bars on Storage Racks

Palletized Stainless Steel Bars on Workshop Floor

Secured Stainless Steel Bar Bundles for Shipment

Forklift Loading Bundled Stainless Steel Bars into Freight Truck

Product Applications

  • Automotive Industry

    Exhaust pipes, mufflers, engine shields, chassis panels

  • Environmental Equipment

    Industrial flue gas ducts, wastewater treatment supports

  • Architectural Decoration

    Interior trims, low-cost railings (dry environments)

FAQ

What type of stainless steel is 409L?

409L is a ferritic stainless steel with good oxidation resistance and cost-effective performance.

What are common applications for 409L stainless steel bars?

It is widely used in automotive exhaust systems, structural supports, and industrial components.

How does 409L compare to austenitic stainless steels?

409L offers lower corrosion resistance but better thermal conductivity and lower material cost.

Is 409L stainless steel bar weldable?

Yes. 409L has good weldability when proper procedures are followed.

Do you supply 409L bars in different profiles?

Yes. Round, square, and flat bars are available based on requirements.

Need more details on stainless steel products? Feel free to contact Walmay anytime.

Walmay will help match the right stainless product form and specification for your application, confirm quantities and packing needs, and provide requested documents based on order requirements.

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