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Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube

Very competitive price and the tubes are well polished, we are very satisfied with Spezilla from our cooperation since year 2010.

—— Nathalie Gulli - Mexico

Spezilla supports our group very well, and now we are approved supplier of goverment, they are reliable and flexible! Spezilla always answers!

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Good quality, fast delivery, Spezilla has been supplying heat exchanger tubes for our projects since 2008, we really appreciate your support!

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Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube

Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube
Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube

Large Image :  Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube

Product Details:
Place of Origin: CHINA
Brand Name: SPEZILLA
Certification: ISO9001, TS16949, PED, AD2000
Model Number: SMLS
Payment & Shipping Terms:
Minimum Order Quantity: 500KGS
Packaging Details: WOODEN BOXED
Delivery Time: Ex-Mill 15 - 30DAYS
Payment Terms: T/T, L/C
Supply Ability: 100TONS/MONTH
Detailed Product Description
Product Name: Ferritic Automotive Tube Specification: ASTM A268/ASME SA268
Material Grade: TP409/409L/S409000 Size Range: 5/8"-2"
WT: BWG18-BWG12 Length: 6096mm
Shape: Round Test Certificate: EN10204 3.1
Finishing Options: Pickling, Polishing, Custom Cutting Packaging: Wooden Box, Bundled, Export Packaging Available
Application: Boiler,Heat Exchanger
High Light:

industrial stainless steel pipe


ss round tube

Automotive Stainless Steel Tube 19.05x1.2x20ft S409000 Ferrtic Tube


ASTM A268 409 409L 1.4512 stainless steel is an alloy designed principally for the automotive exhaust industry, although it has been used successfully in other industrial applications. It combines good elevated temperaturecorrosion resisitance with medium strength, good formability and overall cost. 409L stainless steel is highly resistant to high temperatures, achievable engine and exhaust systems, and reduces the thickness of the exhaust system to reduce exhaust emissions. Low cost, good flexibility, high yield, easy replacement, and environmentally friendly new products.

409 is a titanium stabilised ferritic stainless steel. Although regarded as a general-purpose chromium stainless steel the primary application for Grade 409 is automotive exhaust systems. Its applications are those where appearance is a secondary consideration to mechanical properties and corrosion resistance and where some weldability is required.

Type 409 is a ferritic stainless steel that has a good combination of heat resistance and corrosion resistance. Its titanium stabilized low nickel content provides for an economical metal to corrosion resistance and oxidation resistance.



Typical Manufacturing Specifications:





TP409 is a typical martensitic chromium-alloy steel grade. It does not have the nickel content and owns the following characteristic:

- Harding by heat treatment
- High hardness with good ductility
- Good corrosion resistance capability
- Good wear corrosion resistance
- High cold-deformation property



Item Code: TP409
Tube OD.: 1/4'' - 2''
Wall: 0.028'' - 0.120''
Length: 20FT
Material: 405
Standard: ASTM A268 ASME SA268
Finish: Annealed & Pickled.
Type: Seamless Cold Drawn
Certification: ISO9001:2015
Mill Test Certificate: EN10204 3.1
Packing: Sleeved, Wooden Boxed


Grade 409/409L is a titanium stabilized Ferritic Stainless Steel , most commonly known for use in automotive exhaust systems. It features good mechanical properties and high temperature corrosion resistance. As a matter of fact, 409 / 409L as a chromium Stainless Steel can also be used in applications where weldability and corrosion protection are demanded. Although it is susceptible to rust formation, rarely used for decoration purpose, 409 / 409L stainless steel demonstrates excellent corrosion resistance against gas corrosion.


Alloy TP 409 Pipes is suitable for service in highly corrosive conditions and where high strength is required. The properties of this alloy are being widely used in offshore oil and gas exploration and production and in heat exchangers in petrochemical and chemical processing.

Type 409 stainless steel has a unique chemical composition that includes:

  • C 10.5-11.75%
  • Fe 0.08%
  • Ni 0.5%
  • Mn 1%
  • Si 1%
  • P 0.045%
  • S 0.03%
  • Ti 0.75% max

Available Tube Product Forms:




Typical Applications:


Used for parts requiring a combination of good strength and toughness, plus reasonable corrosion resistance. Typical applications are: Bolts, Bushings, Fasteners, Gas Turbine Parts, Mine Equipment, Pump Parts, Petrochemical Equipment, Steam Turbine Parts, Studs, Valve Parts etc.

Material magnetic in all conditions.


The typical applications of grade 409 stainless steels are listed below:

  • Automotive exhaust tubing
  • Catalytic converter systems
  • Mufflers

Heat Resistance

Grade 409 stainless steels offer scaling resistance at temperatures up to 675°C during continuous operation, and up to 815°C under intermittent conditions. These temperatures pertain to specific service environments.

Heat Treatment

Annealing of grade 409 steels is carried out at temperatures ranging from 790 to 900°C, followed by air-cooling. Thermal treatment does not harden grade 409 steels.


Grade 409 steels must be pre-heated to temperatures of 150 to 260°C before welding. Although grade 430 and 409 filler rods or electrodes can be used during welding of grade 409 steels, grade 309 electrodes or filler rods are strongly recommended by AS 1554.6. Care should be taken to weld grade 409 steels with minimum heat, in order to mitigate grain growth.

Ductility of the welded products can be improved by annealing post-welding at temperatures of 760 to 815°C. However, this is not required for thin welded products. Welding of exhaust tubing of automobiles is carried out without filler rods.


Quality Assurance:

Spezilla's seamless bright annealed stainless steel tubes are produced acc. to the following process and inspection to assure our quality:

1. Chemical Composition Analysis Test With 100% PMI.

2. Solution Annealing / Bright Annealed.

3. 100% Hydrostatic Test and 100% Eddy Current Test

4. Mechanical Tests includes Tension Test, Flattening Test, Flaring Test, Hardness Test.

5. Impact Test subject to Standard request.

6. Grain Size Test and Intergranular Corrosion Test.

7. Visual Test and Endoscope Test for Surface Quality Test





5% Test
Solution at 120°F
Corrosion Rate in Mils per Year and Millimeters per Year (mm/a)
Alloy 409 Alloy 410S Alloy 420 Alloy 425 Mod Alloy 440A Alloy 430
Acetic Acid 0.88
Phosphoric Acid 0.59



Chemical Composition of ASTM A268 409 S40900 Grade and EN 10088-2 1.4512 1.4516 Stainless Steel
Grade C Mn Si P S Cr Ni Ti
TP409 min. max. - 0.08 - 1.00 - 1.00 - 0.045 - 0.030 10.5 11.7 - 0.50 6×C-0.75
TP409L min. max. - 0.035 - 1.00 - 1.00 - 0.045 - 0.030 10.5 11.7 - 0.50 6×C-0.75
1.4516 min. max. - 0.08 - 1.50 - 0.70 - 0.040 - 0.015 10.5 12.5 0.50-1.50 0.05-0.35
1.4512 min. max. - 0.030 - 1.00 - 1.00 - 0.040 - 0.015 10.5 12.5 - 0.50 6×(C+N)-0.65

Mechanical Properties 


Mechanical properties of ASTM A268 409 Grade and EN 10088-2 1.4512 stainless steel


Grade Tensile Strength ksi (MPa) min Yield Strength 0.2% Proof
ksi (MPa) min
Elongation (% in 50mm) min Hardness
Rockwell B (HR B) max Brinell (HB) max
409 55 (380) 25 (170) 20 95 207
1.4512 380-560 210 25    


Automotive Stainless Steel Round Pipe 19.05 X 1.2 X 20ft S409000 Ferrtic Tube 0

Contact Details
Spezilla Tube Co., Ltd. (Shanghai)

Contact Person: Will Ma

Tel: +86 13918539222

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