Austenitic Vs Martensite Stainless Steel

What is the difference between austenitic stainless steel and martensitic stainless steel? This is a question that everyone is most concerned about. As a supplier and manufacturer specializing in the export of austenitic and martensitic stainless steel for 16 years, GNEE will analyze the crystal structure, chemical composition, corrosion resistance, strength and hardness, ductility, magnetism, heat treatment and weldability of austenitic and martensitic stainless steel to help you with your future projects!

Austenitic vs Martensite Stainless Steel Crystal Structure:
Austenitic stainless steel has an austenite crystal structure, which is a face-centered cubic structure. Whereas, martensitic stainless steel has a martensite crystal structure, which is a body-centered tetragonal structure.

Austenitic vs Martensite Stainless Steel Chemical Composition:
The main alloying elements of austenitic stainless steel are chromium and nickel, with chromium content of about 18% and nickel content between 8% and 25%, and a small amount of carbon (about 0.1%).
Martensitic stainless steel contains higher chromium, nickel and carbon, and less iron and other alloying elements. This difference in chemical composition also leads to differences in their physical properties.

Austenitic vs Martensite Stainless Steel Corrosion Resistance:
Austenitic stainless steel has strong corrosion resistance because it contains higher levels of chromium and nickel, which form a passive oxide layer that protects the steel from corrosion.
Martensitic stainless steel has relatively low corrosion resistance, although it can also show good corrosion resistance in certain environments.

Austenitic Vs Martensite Stainless Steel Strength and Hardness:
Martensitic stainless steel is generally stronger and harder than austenitic stainless steel. This is because martensitic stainless steel contains a higher content of carbon and less nickel, which gives it a martensitic crystal structure that can be hardened by heat treatment. Austenitic stainless steel, on the other hand, has relatively lower strength and hardness.

Austenitic Vs Martensite Stainless Steel Magnetism:
Martensitic stainless steel is magnetic, while austenitic stainless steel is non-magnetic. This difference in magnetism makes martensitic stainless steel suitable for applications that require magnetism, such as motors and transformers.

When choosing stainless steel materials, you need to weigh various factors according to the specific application scenarios and needs to make an informed decision. If you are unsure about the products used in your project or you are looking for stainless steel products, please contact us in time!info@gneestainless.com