403S17 Steel Grade: An Overview of its Machinability and Weldability

[ad_1] 403S17 is a martensitic stainless steel grade, also known as 1.4000 or X6Cr13. It is primarily used for applications requiring moderate corrosion resistance and high strength. This grade offers good machinability and weldability, making it suitable for various machining and welding operations.

Mechanical Properties:
– Tensile Strength: 450-650 MPa
– Yield Strength: 230-300 MPa
– Elongation: 15-20%
– Hardness: 20-25 HRC

Technical Properties:
– Density: 7.7 g/cm3
– Thermal Conductivity: 24 W/mK
– Specific Heat Capacity: 460 J/kgK
– Electrical Resistivity: 0.60 Ωmm2/m

Chemical Composition:
– Carbon (C): 0.08% max
– Chromium (Cr): 11.50-13.50%
– Manganese (Mn): 1.00% max
– Phosphorus (P): 0.040% max
– Sulfur (S): 0.030% max
– Silicon (Si): 1.00% max

403S17 stainless steel has good machinability due to its relatively low carbon content and the presence of chromium. It can be easily machined using conventional machining techniques.

403S17 is readily welded using common welding methods such as TIG, MIG, and resistance welding. Preheating and post-weld heat treatment may be required to minimize the risk of cracking and achieve optimal mechanical properties. It is important to use low hydrogen electrodes to avoid hydrogen-induced cracking during welding.