Spring-spring alloys have increased relaxation resistance and a high elastic limit. Due to this, they are considered an ideal solution for the manufacture of elements for which it is impossible to change the structural dimensions (for example, springs and springs). The main component that makes it possible to obtain the required physical and chemical properties rafting, carbon enters — it must be at least 0.5% and not more than 0.8%.
Alloying components, such as nickel (Ni ≤ 1.7%), silicon (Si ≤ 2.5%), tungsten (Wo ≤ 1.3%) and manganese (Mn ≤ 1.3%), added to the composition, help increase resistance to plastic and elastic deformations and resistance to brittleness even during a significant cycle of application and removal of loads. In addition, spring-spring steels have high anticorrosive properties due to additives molybdenum (Mo ≤ 0.5%) and chromium (Cr ≤ 1%). These components increase the wear resistance of steel, the life of parts and reduce the risk of cracking.
In the label steels alloying elements are denoted by the letters: Cr (chrome) — X, Mn (manganese) — G, Si (silicon) — C, Mo (molybdenum) — M, Ni (nickel) — H, W (tungsten) — B, N (nitrogen) — A, B (boron) — P, V (vanadium) — F. The digital identifier in the alloy name indicates the amount of carbon in the metal (in hundredths of a percent). For example, labeling 65S2VA means that steel is of high quality (letter A at the end), contains 0.65% carbon (number 65), 2% silicon (marked C2), and about 1% tungsten (letter B). Steel grade U10A — high-quality, carbonaceous, with a C content of 0.95% to 1.09%.
However, not only the composition of the alloy plays a role in creating the necessary structural and operational properties of springs. Thanks to patenting and wrapping at low temperatures, as well as the use of end-to-end calcination, an equivalent physico-chemical structure of the material is ensured in its various places. This is especially important, for example, for large-diameter wire to avoid the destruction of the product from it.
Alloyed carbon materials are widely used in various industries. They are used in automobile and car building, in the manufacture of furniture, household appliances, door springs and many other products.
One of the main advantages of spring-spring steels is their high resistance to material fatigue — even with prolonged continuous use, products made from such alloys will retain their original properties. Such qualities are very important in the production of various critical parts, such as springs for complex process equipment, bearing housings, various gears and flanges, brake bands, and much more. But each specific case requires its own spring-spring steel grade. For example:
St. Petersburg Precision Alloy Plant produces spring-spring steel of the above grades in the form of cold rolled strip. Such products have high strength properties and a wide range of applications: from the automotive and railway industries to the manufacture of household appliances and electronics. The high quality of alloys that meets international and Russian standards is achieved thanks to the modern laboratories operating at the enterprise that control every stage of production. Contact us, and we will help you choose the right one for you steely.
