409 vs 410 stainless steel: What are the differences?

There are significant differences between 409 and 410 stainless steel plates in many aspects. The following is a detailed comparison of the two stainless steel plates:

1. Chemical composition

409 stainless steel plate:
The carbon content is about 0.22%.
The chromium (Cr) content is about 11%.

410 stainless steel plate:
The carbon content is between 0.08% and 0.15%.
The chromium (Cr) content is between 12% and 14%.
Spectrometer detection is provided before shipment

2. Organization state

409 stainless steel plate: It belongs to ferritic stainless steel. This type of stainless steel has a high chromium content, good corrosion resistance and oxidation resistance, but poor mechanical and process properties. They are mostly used in acid-resistant structures with low stress and as oxidation-resistant steel.

410 stainless steel plate: It belongs to martensitic stainless steel. This type of stainless steel has high strength, hardness and wear resistance due to its high carbon content, but slightly poor corrosion resistance. They are usually used for parts with high mechanical properties and general corrosion resistance requirements, such as springs, turbine blades, etc.

3. Physical and mechanical properties
409 stainless steel plate: Due to the ferrite structure, it has a low thermal expansion rate, good high temperature oxidation resistance, and high thermal conductivity. However, the yield strength and hardness may be relatively low.
410 stainless steel plate: Due to the martensitic structure, it has high strength, high hardness, and good wear resistance. However, the plasticity and weldability may be poor.

4. Application areas
409 stainless steel plate: Originally designed for automobile exhaust system mufflers (exteriors with less severe corrosion), it is also suitable for use in environments with no or slight corrosion and where local slight rust is allowed.
410 stainless steel plate: Often used in situations requiring higher mechanical properties, such as containers, parts of buses and long-distance limousines, and the outer frames of liquid crystal displays.