Designation and deciphering of steel and alloy grades

Marking of domestic alloys

To properly understand and decipher the name of the steel grades in accordance with GOST it is enough to know a few things. First - the letter symbols carry information about the elements in the composition of the alloy (X - chromium, H - nickel, S - silicon) Also with the help of letters mark also the method of deoxidation of steel. Secondly, the numbers after the letters indicate the percentage of the element in the alloy.

Labelling of alloying elements

The alloying elements are marked with the following letters:B - niobium, G (or Mg) - manganese, C - tungsten, D - copper, K - cobalt, E - selenium, M - molybdenum, H - Nickel, P for cerium, S for silicon, T for titanium, P for phosphorus, F for vanadium, X for chromium, Z for zirconium, U for aluminum. If the letter is not followed by a number, the content of this element is less than 1%... The letter, A means the minimum content of harmful impurities: sulfur and phosphorus. The number before the beginning of the abbreviation reflects the carbon content in hundredths of a percent. For example, alloy 12Cr2H4A contains 0.12% carbon, 2% chromium, and 4% nickel.

International standards

As for deciphering the designation of steel grades according to EU or U.S. standards, it is best to use a comparative table with the specified counterparts. First of all, the marking allows you to know the name of the metal, the type of its processing and the scope of use.

Alloying

According to GOST 5632-72), stainless steel products contain at least 10.5% of chromium, nickel or manganese, which is able as nickel dissolves other elements, giving the alloy plasticity, homogeneity and corrosion resistance. In addition, stainless steel has iron, aluminum, zirconium, vanadium, silicon, carbon, phosphorus and sulfur, among other elements. Alloying makes the steel more resistant to heat and makes it possible to produce the most critical parts.

Furnizor

Of course, general information about rolled metal is not exhaustive and the best way to decide on a purchase is to ask for help from a specialist. One of the leading manufacturers and a reliable supplier of rolled metal products on the market is Auremo company, where you can buy both standardized products in a wide range and order the manufacturing of heat-resistant pipes according to individual parameters.