Sheet, plate, strip 20Х23Н13 - 1.4833 - aisi 309
International Equivalent
| Mark | Analogue | W. Nr. | Aisi Uns | En | Order |
|---|---|---|---|---|---|
| 20Х23Н13 | EI319 | Delivery from the stock, in stock |
quality
20H23N13 (AISI 309) sheet, strip and foil made of heat-resistant high-alloy steel autensitno-ferritic class and are designed for components operating at high temperatures 900−1000 ° C in the lightly loaded condition. Unlike austenitic steels 20H23N13 stamp differs greater strength (almost 2 times), higher resistance to intergranular corrosion and stress corrosion cracking in chloride environments and alkalis, heat resistance and higher heat resistance than that of austenitic steel. Thanks to chromium and nickel, their surface is capable of self-repair when damaged. A relatively small percentage of nickel in the composition increases the resistance in environments containing sulfur. Sheet and strip — limited weldability, preheating is required to 100−120 ° C with a final heat treatment.
making
Sheet, strip and foil produced in accordance with the following requirements: hot rolled — Guests: 7350−77 19 19 903−74 and 904−74, sheet rental — GOST 5582−75 and 19 904−74. Tape — GOST 4405−75 and 103−76. The composition of products 22−25% Cr, 12−15% Ni, 2% Mn, 1% Si, up to 0,3% Cu, 0,2% Ti and carbon, thousandths of a percent phosphorus and sulfur.
The percentage of 20H23N13 grade (GOST 5632−72)
| Cu | C | Si | Mn | Ni | Cr | P | S | Ti | Fe |
|---|---|---|---|---|---|---|---|---|---|
| ≤0,3 | ≤0,2 | ≤1 | ≤2 | 12−15 | 22−25 | ≤0,035 | ≤0,025 | ≤0,2 | the basis |
At t ° 1050−1080 ° C sheet, strip and foil rolled out, heated to a plastic state of preparations. The subsequent cold deformation strengthens the mechanical properties, hardness and strength increases, but the properties are lost ductility. The higher the work hardening coefficient, the stronger the tape and sheet.
Mechanical properties of rolled products t o 20 o C.
| assortment | GOST | σ B | σ T | 5 d | curing |
|---|---|---|---|---|---|
| Page 1 — 4 mm | 5582−75 | 540 | 35 | Hardening 1100 — 1150 o C, air cooling, | |
| thick sheet | 7350−77 | 570 | 35 | hardening | |
| Rod Ø 60 | 5949−75 | 490 | 295 | 35 | Hardening 1100 — 1150 o C, the air, |
The σ — limit of short-term strength;
σ T — yield limit for residual deformation.
d 5 — elongation at break.Each leaf goes through several stages of production, to improve quality. The most important step is considered to be the cooling process. The new plate mills cooled sheet, moving it to roller tables, conveyors and shlepperami. Mills is an old design the finished product is cooled in stacks or slabs shop. The sheets in stacks undergo additional heat treatment — autotempering, thereby becoming longer. Sheet and strip before toughness tests are accelerated cooling — sheet surface is sprayed with water and blown air. This increases the strength at low temperatures.
Classification
Ribbon, sheet processing method according categorized in appearance and surface quality, edges and by referring to the accuracy of manufacture.
application
The tape, sheet used in the manufacture of various capacities, which are operated under high pressure in the construction, medical, food industry, chemical, petrochemical and shipbuilding industries. Sheet, tape or tube 20H23N13 can replace products made from steel grades 309S, 309H, 309Cb, 309HCb, not losing them in properties.
Supply
Supplied rolled 20H23N13 grade (AISI 309) 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.
Buy at the best price
Digging LLC «Electrovek-steel» offers an unlimited range of stainless steel alloys of the highest quality. We offer special purpose alloys for the best price from warehouses in Ukraine and Russia. If you are interested in our offer, please contact the nearest office. The qualified experts will provide all necessary information on the product, the price range, the implementation conditions. The cost of goods depends on the parameters of products and additional conditions of supply.
