Stainless steel circle and bars of steel 20H23N18 (AISI 310s) are produced from complex-alloy austenitic Its main alloying element in accordance with GOST 5632−72 is chromium contained in an amount of 22−25%. The larger their share in the composition, the higher the corrosion resistance. If more than 17% chromium steel becomes resistant to aggressive oxidizing media. 12−15% Ni in the composition give the necessary flexibility and increase the corrosion resistance and heat resistance. Furthermore, an alloy doped with 2% manganese, 1% silicon, 0.2% carbon, in thousandths of a percent phosphorus and sulfur.
The percentage of 20H20N14S2 grade (GOST 5632−72)
Calibrated steel bars produced according to the following 20H23N18 GOST: 7417−75, 8559−75, 8560−78. Polished rod and silverfish — GOST 14 955−77. Forgings and forged billet 20H23N18 — GOST: 1133−71. For the production methods used 20H23N18 bar hot and cold rolling. bar forging temperature — 1170 ° C at the beginning of the process and 850 ° C at the end. The cross section of the rod has a circular shape. In some cases, the deviation is permissible ovality — the difference between the largest and smallest diameters within one section must not be greater than 50%.
Mechanical properties of rolled products t o 20 o C.
|assortment||GOST||σ B||σ T||5 d||curing|
|bars,||5949−75||490||196||35||Hardening 1100 — 1150 o C, the air|
|thick sheet||7350−77||540||265||35||Hardening 1030 — 1130 o C, cooling water|
|thin sheet||5582−75||510||245||35||Hardening 1080 — 1150 o C, cooling water|
|thin sheet||4986−79||570||19−38||Hardening 1050 — 1080 o C, cooling air|
The σ — limit of short-term strength;
σ T — yield limit for residual deformation;d 5 — elongation at break.
- On Accuracy — the typical, high and higher, according to the product it gets labeled B, A or B;
- The shape — rolled with a diameter of 9 mm, comes in the form of coils, with a larger diameter — in the form of bars;
- Length — off-gage, dimensional and multiple dimensional. alloy steel wire rods supplied 1−6 m in length;
Forgings, parts of the combustion chambers, bandages, collars, pendants, boiler mountings, muffles to work at t ° 1100 ° C. Steel circle can be used for the production of springs, washers and so on. N. Of technological products. The building — as a reinforcing element, for, the manufacture of staircases, balconies, in the grounding and lightning protection systems. From this range of fasteners made in the construction of highways, bridges, tunnels. These products are perfect prevents aggressive action of the external environment and actively used in the marine industry.
In stock «Electrovek-steel» company offers a wide range of rental brand 20H23N18 any parameters. All products are certified. The technical documentation includes data on the chemical composition, limiting the percentage of impurities; mechanical properties of products. We can buy in bulk, any semi-finished products for large-scale productions. We also offer optimal conditions for retail customers. High level of service and efficiency of service are the face of our company.
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We provide for the implementation of an unlimited range of stainless steel alloys of the highest quality at a competitive price. If you are not sure, offers experienced managers who are always connected and ready to provide advice. Having made an order with us, you will receive certified products that comply with Russian and international standards of quality in the shortest possible time. If you value your time, contact today with our nearest office in Russia or in Ukraine, or order it over the Internet.