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ASTM S40900 409/409L Stainless Steel Pipe for Automotive Exhaust Systems
Stainless steel grade 409L is a chromium, titanium-stabilized ferritic stainless steel specifically designed for automotive exhaust systems. With 11% chromium content—the minimum required for forming the protective passive surface film—this alloy offers excellent corrosion resistance combined with medium strength, good formability, and cost-effectiveness.
Material Advantages
409L stainless steel provides superior corrosion resistance compared to carbon steel, making it ideal for mildly challenging environments where corrosion resistance and high-temperature oxidation protection are essential. This material prioritizes mechanical properties and corrosion resistance over appearance, making it perfect for functional applications.
Chemical Composition
Element
C
Mn
Si
P
S
Cr
Ni
Ti
409L
max: 0.03
max: 1.0
max: 1.0
max: 0.045
max: 0.045
min: 10.5 max: 11.75
max: 0.5
min: 0.48 max: 0.75
Mechanical Properties
Grade
Tensile Strength MPa (min)
Yield Strength 0.2% MPa (min)
Elongation %
Hardness (HB) MAX
Hardness (HRB) MAX
409L
380
207
20
207
95
Primary Applications
Automotive exhaust systems
Catalytic converters
Mufflers and tailpipes
Farm equipment components
Structural support and hangers
Transformer cases
Furnace components
Heat exchanger tubing
Company Details
Bronze Gleitlager
,
Bronze Sleeve Bushings
and
Graphite Plugged Bushings
from Quality China Factory
Business Type:
Manufacturer,Distributor/Wholesaler,Exporter
Total Annual:
>1000000
Employee Number:
>100
Ecer Certification:
Verified Supplier
Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative... Our company is located in Wuxi City, China, we are a stainless steel plate, seamless steel pipe, round steel, steel belt, decorative pipe and other products distribution wholesale private enterprise. Our company operates stainless steel plate, seamless steel pipe, round steel, steel belt, decorative...