Tape, strip, sheet 55S2A - 55Si7 - 1.5026
|Mark||Analogue||W. Nr.||Aisi Uns||En||Order|
|55С2А||~~1.5026||55Si7||Delivery from the stock, in stock|
Composition and properties
Spring steel brand 55S2A, which is produced according to technical requirements GOST 14969, refers to high-carbon structural steels of higher quality. Chemical composition of material is as follows:
|The percentage||0,52 0,58…||1,50 2,00…||0,60…0,90||To 0.30||To 0.40|
As the metallurgical impurities are also available sulfur (not more than 0.02%) and phosphorus (not more than 0,030%).
The closest foreign analogues of steel are: in the U.S. and Canada — steel 1.5026, in Europe steel grade 55/56Si7. Their composition is somewhat different from 55S2A. In particular, improved tolerance for sulfur and phosphorous content (up to 0,045%), slightly increased the percentage of manganese (0,7…1,0%), tighter is the upper tolerance on silicon (1,5…1,8%). Chromium and Nickel equivalents are not available. Steel of these brands in large quantities are not produced, so the physical and mechanical characteristics are set as prototypes, the last heat treatment in the following mode -quenching from 8700 With in oil, medium-temperature tempering (at 4700 C):
- Tensile strength is 1275 MPa;
- The plastic limit is 1174 MPa.
- Elongation — 6…7%;
- The relative narrowing — 30%;
- The hardness of the annealed/quenched samples Brinell — 240…280 HB.
For the production of welded steel structures under consideration do not apply. Due to the insensitivity of the data grades for flokirovanie and brittleness perhaps the use of technological processes of hot forging. Application
Spring steel grades 55S2A, and 55Si7 (1.5026) are widely used in the manufacture of heavy-duty springs and the springs of large diameter (in particular, in the manufacture of vehicles). Sometimes these are used in the manufacture of the cutting tool (in this case, the necessary pre-forging for the purpose of formation of fine-grained structure). The most popular profiles of sheet metal is hot-rolled sheet with a thickness of 3 to 50, and the strip and tape.
Buy metal sheet from structural steel grades 55S2A, 55Si7, (1.5026), using the company’s offer Electrocentury-steel — appropriate and profitable. Rent is implemented at producer prices, guarantees a wide range of thickness, width and length of the assortment and high quality products.