Bearing steel GOST
Are you interested in GOST for bearing steel from the supplier company AvecGlob? Here you will find interesting information on this topic.
Bearings of domestic production are manufactured in accordance with the technical requirements of GOST 801−78.
Application area
This standard applies to hot rolled diameters of up to 250 mm inclusive, calibrated steel and steel with special surface finish (with or without drawing) designed for the manufacture of rings, balls and roller bearings.
Steel should be produced in electric arc furnaces with evacuation, without evacuation (in agreement with the consumer), with acid open-hearth furnaces or by electroslag remelting.
As regards the norms of the chemical composition, this standard also applies to ingots, slabs, pipes, sheets, forgings, rolled and wire.
Brands
Bearing steel is manufactured by ShKh15, SHKh4, SHKh15SG and SHKh20SG
Assortment
It is presented in the table:
| The state of steel | Diameter of bars, mm |
| Hot-rolled steel | 8; 9; 10; eleven; 12; 13; 14; 15; 16; 17; 18; 19; 20; 21; 22; 23; 24; 25; 26; 27; 28; 29; thirty; 31; 33; 35; 38; 40; 42; 45; 48; 50; 55; 60; 65; 70; 75; 80; 85; 90; 95; 100; 105; 110; 115; 120; 130; 140; 150; 160; 170; 180; 190; 200; 210; 220; 230; 240; 250 |
| Steel calibrated and with special surface finish | 4.0; 4.5; 5.0; 5.5; 6.0; 6.5; 7.0; 8.0; 9.0; 10.0; 11.0; 12.0; 13.0; 14.0; 15.0; 16.0; 17.0; 18.0; 19.0; 20.0; 21.0; 22.0; 23.0; 24.0; 25.0; 26.0; 27.0; 28.0; 29.0; 30.0; 31.0; 32.0; 33.0; 34.0; 35.0; 36.0; 37.0; 38.0; 39.0; 40.0; 41.0; 42.0; 44.0; 45.0; 46.0; 48.0; 49.0; 50.0 |
Supplier — AvekGlob company — offers at a reasonable price from the manufacturer a diverse range of bearing steels that meet the technical requirements of domestic standards. The supplier guarantees the timely delivery of products to any address specified by the consumer.
Chemical composition
Must comply with the standards given in the table:
| steel grade | Mass fraction of elements,% | |||||||||||
| of carbon | silicon | manganese | chrome | sulfur | phosphorus | nickel | copper | nickel + copper | aluminium | vanadium + niobium | ||
| no more | ||||||||||||
| ШХ15 | 0.95−1.05 | 0.17−0.37 | 0.20−0.40 | 1.30−1.65 | 0.020 | 0.027 | 0.30 | 0.25 | 0.50 | - | - | |
| ШХ15СГ | 0.95−1.05 | 0.40−0.65 | 0.90−1.20 | 1.30−1.65 | 0.020 | 0.027 | 0.30 | 0.25 | 0.50 | - | - | |
| SHKh4 | 0.95−1.05 | 0.15−0.30 | 0.15−0.30 | 0.35−0.50 | 0.020 | 0.027 | 0.30 | 0.25 | 0.50 | - | - | |
| SHX20SG | 0.90−1.00 | 0.55−0.85 | 1.40−1.70 | 1.40−1.70 | 0.020 | 0.027 | 0.30 | 0.25 | 0.50 | - | - | |
| SHX7SG | 0.72−0.80 | 0.40−0.65 | 1.00−1.30 | 0.60−0.90 | 0.020 | 0.025 | 0.25 | 0.25 | - | 0.006 | 0.10 | |
| In steel, obtained with the use of electroslag remelting, the mass fraction of sulfur should not exceed 0.010%, phosphorus — 0.025%. For steel grade ШХ15СГ-Ш with a cross section of more than 140 mm intended for the production of large-size bearings, narrow limits are established: the mass fraction of manganese is 1.00% -1.20%, chromium is 1.40% -1.65%, silicon is 0, 45% -0.65%. The order should indicate: «For large bearings». When steel is smelted in acid open-hearth furnaces, the mass fraction of copper is allowed up to 0.30%, while the norm of the total mass fraction of copper and nickel is not more than 0.50%. The «-" sign means that the mass fraction of the element in the steel is not normalized and is not controlled. | ||||||||||||
Supplier — AvekGlob Company — offers to purchase various grades of bearing steels that comply with technical standards and GOST requirements. Products can be bought at a price formed on the basis of European and world standards of production. Implementation is possible in bulk and retail, for regular customers, a flexible system of discounts operates.