Is 304 or 409 stainless steel better?
409 is more corrosion-prone than 304 stainless steel, but it provides a longer use-life than common OEM aluminized steel exhaust systems. It is the next step up in corrosion protection.
Can 409 SS be hardened?
409 can be formed by roll forming, stretch bending, deep drawing or pressing. In the annealed condition 409 does not harden when cold worked using mild roll forming techniques including pressing or stretch-bending.
What is the difference between 409 and 410 stainless steel?
The corrosion resistance of 409 stainless is about the same as Type 410 stainless steel. Type 409 offers improved corrosion resistance in comparison to carbon steels. However, its corrosion resistance is lower in comparison to other stainless steels with higher chromium content.
How long will 409 stainless exhaust last?
8-10 years
Most modern factory exhaust systems are made from 409 stainless steel. It is strong and will last 8-10 years in a moderate climate.
What is the difference between 316 and 409 stainless steel?
409 offers less protection than 304 and 316 gauge steel, but the lower price is an advantage to many customers. Skolnik uses 409 in place of the hazardous galvanizing process that used to be standard practice for giving carbon steel extra protection.
Can stainless steel be heat treated?
The most popular of the 300-series steels—304 stainless steel— is revered for its very good corrosion resistance and is commonly used in cookware. Martensitic stainless steels can be hardened via heat treatment; how hard they can get depends on their carbon content.
Is 409 stainless magnetic?
409 stainless steel can contain up to 90% iron, meaning a magnet will stick to it and is prone to rust.
What stainless is best for exhaust?
304 Stainless
304 Stainless is the highest quality stainless steel used in the automotive world, and it is most often found in exhaust tips, clamps, bolts, and other small exhaust components where strength is very important.
What is 409 steel used for?
409 is a titanium stabilised ferritic stainless steel. It forms a light protective rust layer in exhaust gas atmospheres and is readily weldable. Most applications involve engine exhaust systems such as automotiove exhausts, catalytic converters and mufflers.
What is the corrosion resistance of alloy 409?
Alloy 409 resists corrosion strongly compared to carbon steel and is used as an alternative to carbon steel in mildly challenging environments where its high resistance to corrosion and high temperature oxidation gives an advantage.
What are the alternative grades of 409 stainless steels?
The following table gives possible alternative grades of 409 stainless steels: Easy to weld and good corrosion resistance. Heavy sections are more easily available when compared to 409. High heat resistance and corrosion resistance. Grade 304 is expensive. Better heat resistance when compared to 304 or 409.
What is the difference between 409 and 439?
Stainless Steel 439 is a modified version of 409. It has a higher steel grade which makes it better at heat transference and absorbing pollutants. This makes it ideal for more visually or more challenging pieces of the vehicle. Not Sure What you’re looking for?
https://www.youtube.com/watch?v=tez798fmfxo