The marking of bearing steel
To purchase at affordable prices from the manufacturer rolled steel for the production of ball and roller bearings offers the company Elektrovek-steel. The supplier guarantees immediate delivery of products to any point specified by the customer.
Features of the marking
According to GOST 801−78, the letter «Ш» must be present in the marking of bearing steels, followed by an alphabetic and numerical indication of the percentage of chromium (X), silicon ©, manganese (G), molybdenum (M) and other elements that make up the composition. This is confirmed by the data in the following table:
|ШХ15||0.95… 1.05||0.17… 0.37||0.20… 0.40|
|SHKh4||0.95… 1.05||0,15… 0,30||0,15… 0,30|
|ШХ15СГ||0.95… 1.05||0.40… 0.65||0.9… 1.2|
|SHX20SG||0.90… 1.0||0.55… 0.85||1.4… 1.7|
|11X18M-SHD||1.10… 1.2||0.53… 0.93||0.50… 1.0|
In the composition of steels, the percentage of metallurgical impurities (phosphorus and sulfur) is limited, which should not exceed 0.025… 0.027%. Bearing steels allow traces of copper (up to 0.3%) and nickel (up to 0.25… 0.30%).
The total percentage of alloying components usually does not exceed 5%, since otherwise the machinability of the steels in question is impaired.
Buy the bearing steel in the range of brands and profiles at prices from the manufacturer offers the company Elektrovek-steel. The supplier provides prompt delivery of metal products to any point specified by the customer.
Appointment of individual steel grades
All bearing steels contain a high percentage of carbon, and, in the aggregate of their physical and mechanical properties, can be attributed rather to tool steels. Considering their direct application, it should be noted that the bearing steel is divided into two groups:
Steels used for the production of bearings that function under normal operating conditions;
Steel, designed for the manufacture of bearings operating in chemically aggressive environments, as well as in elevated temperatures.
The first group includes steels of grades ШХ15, ШХ15СГ, ШХ20СГ, ШХ4, ШХ6, ШХ9. The steels are the second type of steel 95Kh18-III, produced by the specifications of enterprises. Here the letter «Ш» means that this steel is produced using the technology of electroslag remelting. With the use of the vacuum-arc remelting method, SD letters appear in the steel marking. The group of such steels is also of the brands 11Х18М-ШД, ЭИ760, 8Х4В9Ф2 and 8Х4М4ВФ1-Ш.
Buy the bearing steel in the assortment of brands and profiles at economically favorable prices of the manufacturer offers the company Electrovek-steel. The supplier guarantees timely delivery of rolled metal products to the address set by the customer.