Spring steels are a special type of steel designed for the production of a variety of elastic parts, among which springs and springs are the most popular. The main difference of this type of steel is a much increased yield strength. According to the method of subsequent processing and the final product, the steel can be supplied in sheets, wire, hexagons, squares. Any spring steel is necessarily subjected to thermomechanical treatment. It increases strength and wear resistance by 2 times. The main characteristics of spring steel are considered to be an increased level of resistance to elastic deformations and a low coefficient of residual stretching. Steel of this type should have good anti-corrosion properties, which favorably affects the service life of products and prevents the appearance of cracks during operation.
Spring steel is characterized by: increased plasticity;
endurance to intense loads;
excellent resistance to brittle fracture;
excellent resistance to deformation;
small coefficient of residual stretching;
good anti-corrosion properties (due to chromium and molybdenum in the composition);
resistance to stress relief. This material is a high or medium carbon metal with a small amount (within 2.5%) of alloying elements and a high yield strength. Due to this, parts made of this alloy are able to retain their original shape, subjected to significant bending, torsion and dynamic loads.
Spring-spring steels lend themselves well to welding, subject to preliminary annealing of the parts to be joined.
Production The composition of spring steel contains 0.5 ... 0.75% carbon. When its content exceeds 0.7%, high-strength and hard tool steel is obtained for the subsequent manufacture of various kinds of tools and springs that are most resistant to loads.
This is achieved by adding alloying elements, the main of which is silicon. Its melt in ferrite contributes to the formation of a stable inhomogeneous medium of carbon atoms, which slow down the dislocation. With a parallel increase in the hardness of the metal, silicon reduces its ductility, causing decarburization. This significantly limits the use of purely silicon, inexpensive alloys. Uniform physical and chemical properties of a high-quality alloy can be obtained through the process of calcination with through technology. Spring stainless steel is subjected to hardening followed by tempering (temperature 400...500 degrees Celsius) up to 45 HRC. Improperly hardened material will be brittle and crumble easily.
Areas of use
Structural spring steel and aluminum can be bought from us in any quantity. The unique performance properties and high resistance of this stainless steel to corrosion and wear have made this material indispensable in the following areas: mechanical engineering;
instrumentation;
aircraft industry;
production of household appliances.
Structural steel 60S2A is used for the production of heavily loaded springs, torsion shafts, collets, and other products that operate at elevated temperatures. Rolled sheets are needed for the manufacture of springs, spring washers and rings, friction discs, bushings, brackets, etc.
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