20H25N20S2 wire, round, rod
Steel wire circle and bars of the brand 20H25N20S2 produce complex alloys. The composition in accordance with GOST 5632−72 24−27% Cr, 18−21% Ni, 2−3% Si. The alloy is doped with vanadium, tungsten, titanium and carbon — 0.2% manganese, copper and molybdenum — 0.3%, phosphorus thousandths lobes. Balance is iron. Since chromium and nickel are major alloying elements of chromium-nickel steel referred to. forging temperature 1170 ° C at the beginning and 850 ° C at the end of the process. Cooling is performed in air.
The percentage composition in accordance with GOST 5632−72
Heat resistance during, t ° to 1100 ° C, corrosion resistance, including in an oxidative environment, aesthetic appeal. Properties such as high strength, wear resistance, allow the use of wire rods and round as a preform for the production of critical parts, which are operated at high loads and temperatures. Due to nickel and chromium protective film on the surface of the parts quickly restores itself with minor injuries. The disadvantage is considered to be a tendency to temper brittleness.
Mechanical properties of rolled products t o 20 o C.
|assortment||GOST||σ B||σ T||5 d||hardening|
|bar||5949−75||590||295||35||t o 1100 — 1150 o C, air cooling|
|Thin Sheet 1 — 4 mm||5582−75||490||35||o 1050 — 1100 o the C, cooling water,|
The σ — limit of short-term strength;
σ T — yield limit for residual deformation;d 5 — elongation at break.
Circles and bars and rods and wire 20H25N20S2 produce hot-method and calibration, which means after the standard metal processing and cold rolling — drawing. Calibration is used to give the article an accurate outer diameter. And after this procedure, if the required structural features for future parts factory by grinding and polishing the lower surface roughness.
Advantages alloy allow the use of wire, circle and bar 20H25N20S2 as components of high-temperature furnaces, and various types of fasteners, stainless steel complex structures. The wire is used for welding stainless steels with unalloyed or low-alloyed metals. It is also used to bond the sublayers with different thermomechanical coating metal products other metal layer (cladding) and for welding heat-resistant austenitic steels (containing 25% Cr and 20% Ni) in an argon atmosphere. This wire is used for welding armor steels. Seam, obtained by a welding has a very high resistance to heat, so the product can be used in the energy, chemical and heavy machinery, petrochemical industry.
Presented 20H25N20S2 rental brand 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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In stock company «Electrovek-steel» is represented by a diverse range of stainless steel alloys. We supply certified products of domestic and foreign manufacturers. Our staff members are always happy to provide expert assistance in the selection of metal-roll. We employ some of the most experienced management consultants. Strict compliance with the rules of production, excellent product quality and minimal lead times are the face of our company. For regular customers introduced discount prices. See also: