Introduction
The primary alloying elements of 1.4003 / X2CrNi12 ferritic stainless steel are the chromium, nickel and molybdenum. The combination of these gives the material its characteristics of excellent resistance to atmospheric corrosion, superior resistance to acids, chlorides or general salts, a uniform and attractive finish, good weldability and its exceptional form ability. The 1.4003 / X2CrNi12 ferritic stainless steel is primarily used as a structural material in corrosion-resistant applications, like building and kitchen.
Properties of 1.4003 / X2CrNi12 Ferritic Stainless Steel
Corrosion Resistance
1.4003 / X2CrNi12 ferritic stainless steel has excellent corrosion resistance in both atmospheric and non-controlled industrial atmosphere, moreover, it provides superior corrosion resistance to most chemicals, acids, chlorides and other corrosive agents. Furthermore, this material has excellent resistance against stress corrosion cracking due to chlorides and to pitting and crevice corrosion. This is due to its high chromium content.
Weldability
1.4003 / X2CrNi12 ferritic stainless steel may be welded by all common welding methods. However, careful pretreatment is necessary before welding, in order to ensure good weldability. The pre- and post-weld heat treatments may require the use of appropriate filler metals, such as straight chromium or low-alloyed stainless steel.
Mechanical Properties
1.4003 / X2CrNi12 ferritic stainless steel has an adequate yield strength of 345MPa and a good quality of tensile strength at 525MPa. The major mechanical properties of the material are more dependent on its exact carbon content rather than on its alloying elements.
Heat Treatment
1.4003 / X2CrNi12 ferritic stainless steel is not heat treatable. The best way to improve the mechanical properties is to individually forge a homogeneous alloy. The annealing of the material should be carried out at a temperature of between 1050-1150°C, cooling as quickly as possible, so that it should not exceed five minutes.
Machinability
1.4003 / X2CrNi12 ferritic stainless steel has good machinability; however, it is much more difficult to machine than carbon steel. It has an average machining rating. This material has a high degree of deformation, and special measures may be needed in order to reduce the cutting forces.
Applications
1.4003 / X2CrNi12 ferritic stainless steel is suitable for use in a variety of industrial and commercial applications, including construction industry, kitchen, industrial services and also for interior decoration. Its good welding and mechanical properties make it a favorite material within the construction industry for structural contributions, which require high strength with low weight. This is commonly used for kitchen vessels like sinks and other containers, with greater abrasive resistance.
Conclusion
1.4003 / X2CrNi12 ferritic stainless steel is a ferritic material, with excellent corrosion resistance and high mechanical properties. It is most suitable for use in corrosive environment and aggressive atmosphere. Its formability and weldability makes it a suitable choice for general purpose where uniform and attractive finish is preferred.
