Letters in Gost Stamps and Density of Metals

Alloying

According to GOST 5632-72), stainless steel in its composition contains at least 10.5% 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. The alloying process enhances heat resistance and makes it possible to produce the most critical parts from steel. When choosing heat-resistant steel for unstressed environments, you can choose a grade with a lower carbon content. Stainless steel has balanced characteristics regarding heat resistance and heat resistance, making it very popular. The greatest resistance to corrosion in aggressive environments. demonstrate the greatest resistance to corrosion. complexly alloyed compositions with a high percentage of molybdenum, copper, nickel, silicon. Brand with a necessary given set of qualities is selected depending on the specific conditions (concentration of the aggressive factor and t °). The use of stainless steel saves money, time for their maintenance and repair, compared with products made of conventional steel.

Alloy designation

The alloying elements are designated by the following letters:B for niobium, G (or Mg) for manganese, W for tungsten, E for copper, K for cobalt, E for selenium, M for molybdenum, H for 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.

Steel grade

The first thing to do is to find out what group of steel the product belongs to - carbon or alloy. For example, carbon alloy grades are divided into groups: A, B and C. After one of these letters (A is not specified), as a rule, there is a number from 0 to 6 - this is a convention for indicating the increase in such a parameter as "ultimate strength". Accordingly, the higher the number, the better the characteristics of the metal.

Delivery

All products presented in the warehouse of the supplier "Auremo" are certified. The technical documentation includes data on the mechanical qualities of semi-finished products and chemical composition. From us it is easy to buy any metal products for large-scale productions. We also offer optimum conditions for retail customers. High level of service is rightly the face of our company.

Symbols such as letters in the metal grades are not just a random set of symbols, and carry the basic information about the material. The domestic nomenclature of this type of goods is regulated by the norms specified in GOST. Among the most common characteristics are the following: the density of metals and alloys, chemical composition, the purpose of steel and method of manufacturing.

Also of great importance is the specific density of metals and the amount of additional components. As for carbon steel, the increased content of manganese in the alloy is denoted by the letter "G". In addition, there are additional symbols in the marking with information about the type of steel:

-kp - boiling;

-ps - semi-resistant;

-cp - mild.

More specific or vice versa - general information about the rolled metal can be found in the directory on our website, using the line "Search". Also here it is very easy to order the manufacturing of heat-resistant pipes or other type of rolled metal products in any quantity you need.