Martensitic/ferritic chrome stainless steel 1.4006 is characterized by a very good corrosion resistance when working with such substances as: organic acids, soaps or solvents. They are moderately aggressive measures that do not contain chlorine. To steel has acquired the highest degree of resistance should be polished or smooth surface free of all contamination, sediment or air strikes.
Very good machinability and weldability. The mechanical properties of the steel are very good. This grade of steel is resistant to atmospheric agents, diluted acids, alkaline batteries solutions. The yield strength Re > 450 MPa tensile strength Rm = 650-850 MPa, elongation is less than 15%.
Application of steel UNS S41000
Stainless steel S41000 is used in the oil and petrochemical industries. The main use is to build industrial machines. It is used for surgical instruments, for the manufacture of valves, nozzles, cutlery, steam turbine blade, hydraulic presses, nuts, bolts, water pumps, cracking machine parts, stainless steel sieve sieves and the production of blood cooking and dinnerware. Used for the components of equipment working in contact with water and steam.
Characteristics of AISI 410
For effective connections that are heavily loaded with steel should be heated before welding. Then, after welding, annealing or quenching and tempering. Steel can be hardened and is magnetic. The hardness of steel able to improved is greater than 24 HRC, while able to softened it from 121-187 HB. Low carbon content causes does not show significant strength compared with other types of structural steels. Compared with other species, is much more resistant to corrosion. Is resistant to adipic acid, arsenic, benzoic acid, boric, hydrazide, gallic, malic. In addition, low temperatures or concentrations also steel is resistant to nitric acid, chromic, tannic and carbolic, ammonium hydroxide, barium, aluminium, potassium. However, it is not resistant to salts and sulfur compounds.
Process starts with softening annealing at temperatures from 750 to 800 °C with cooling in the oven. Hardening of steel is possible at temperatures between 950 to 1000 degrees °C in oil or air, and tempering from 700-790 °C with cooling in oil, air or water. For the production of stainless steel the most commonly supplied is able to softened and tempered.
Why martensitic or ferritic structure?
The reason stay on heat treatment and condition. After annealing products have ferritic condition, without any special mechanical properties. After Quenching and tempering material get martensitic condition with higher hardness, mechanical properties with lower corrosion resistance.