| Type: | Stainless Steel Sheets |
|---|---|
| Standard: | ASTM, JIS |
| Grade: | 400 Series |
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409 is a low cost ferritic stainless steel. Its dominant use is in vehicle exhaust systems, so much so that
it is often referred to as "muffler" grade.
| Grade | C | Cr | Ni | Ti |
| 409 | 0.03 | 10.5~11.7 | 0.50 | 8(C+N) min. 0.15~0.50 |
This 409 stainless grade combines the following characteristics:
Automotive exhaust systems have to withstand aggressive conditions from high temperatures at the manifold end,
sulphuric acid condensate and de-icing salt. Given the severity of these conditions, it can seem surprising that the 11% Cr
409 grade has met the challenge for many years. Exhaust components are also required to be bent, expanded
and pressed into all sorts of convoluted shapes.
The ability of a ferritic steel to meet these formability requirements is little short of amazing.
Other applications include:
Heat exchangers, gas boilers, fuel filters.
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