Wire 20H20N14S2 - 1.4828 - aisi 309
This heat-resistant high-alloy chromium-nickel steel austenitic-ferritic class. It is used for the production of rolled metal products such as a circle, rod, wire. In its composition 19−22% Cr, 12−15% Ni. As additives 2−3% of silicon is used to charge up to 1.5% manganese, 0.3% copper, 0.2% titanium and carbon, thousandths of a percent phosphorus and sulfur.
The percentage of 20H20N14S2 grade (GOST 5632−72)
Calibrated steel rod brand 20H20N14S2proizvoditsya accordance with the following guests: 7417−75, 8559−75, 8560−78, Polished rods and silverfish — GOST 14 955−77. Forgings and forgings — GOST: 1133−71, 25, 054−81. forging temperature — 1170 ° C at the beginning of the process and 850 ° C at the end. The cross section of rolled section may be circular, hexagonal, square. The curvature is measured on the product more than 1 meter in length, while the measurement is taken at a distance of not less than 15 centimeters from the end product. The maximum deviation of the length of the product should not be more than 3 cm with a length of up to 4 m, 5 cm — with a length of up to 6 m and 7 cm — with a length of over 6 meters. steel quality allows products of 1 to 6 meters, the smaller the carbon content in the alloy and the lower the quality of the steel, the greater the minimum length of the released product.
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||490||20||---||---|
|Rod Ø 60||5949−75||510||375||20||Hardening 1000 — 1150 o C, the air,|
The σ — limit of short-term strength;
σ T — yield limit for residual deformation;d 5 — elongation at break.
From this circle, rod, wire, fabricated parts heat-treating furnaces, furnace conveyors, designed for operation up to 1000 ° C, carburizing boxes, and other parts of high temperature industrial furnaces. In metallurgy for cementation boxes are used for surface carbon saturation by diffusion of low-carbon steel to increase its hardness and durability. As a rule, subjected to carburizing alloys with carbon content up to 0.2% and alloy steel. Inside designs for carburizing temperature reached 850 — 900 ° C.
We deliver certified 20H20N14S2 rental brands. 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» always available products from stainless steel alloys for the best price. It is formed with European rates on non-ferrous metals without the inclusion of the additional costs. We supply certified products of domestic and foreign manufacturers. Cooperation with us gives a number of advantages. Our experts will be happy to provide advice when buying any alloys, the correct choice of which will depend on the performance and durability of the equipment. We will help you determine not only the optimum parameters of the product, but also offer the best price.