15H25T alloy pipe
Steel ferritic class 15H25T (EI439) is a complex-stainless alloy. The composition according to GOST 5632- - — — 72 24−27% chromium, up to 1% silicon, 0.8% manganese, 0.5−0.9% titanium, 0.15 carbon, thousandths of a percent of phosphorus and sulfur. Smelted steel in electric furnaces open. This tech heat-resistant material is widely used in various industries to welded structures, do not suffer from shock loads when t ° ≤1100 ° C.
The percentage of 15H25T brand (EI439) GOST 5632−72
This steel is resistant to the action of sea water and alkaline solutions of Na 2 S and NaHS. In the aggressive environment of boiling 40% nitric acid corrosion rate of 0.1 mm / year. The phosphoric acid solution, any concentration — 0.01 mm / year.
|assortment||GOST||σ B||σ T||5 d||curing|
|bar||5949−75||440||295||20||Without t / processing|
|Tube x / d||9941−81||461||17||— «-||— «-|
|Pipe g / d||9940−81||441||17||— «-||— «-|
|thin sheet||7350−77||530||17||— «-||Annealing 740 — 780 o C,|
|thick sheet||5582−75||440||14||200||Annealing 740 — 780 o C,|
The σ — limit of short-term strength;
σ T — yield limit for residual deformation.d 5 — elongation at break
Hi-tech steel, readily undergoes hot deformation t ° in the range 1000 — 700 ° C and cold deformation at t ° 150 — 200 ° C. Welded manual arc welding with preheating and final heat treatment.
Pipes made of this alloy have excellent corrosion resistance, heat-resistant and ductile. They are reliable in environments oxidative nature during the production of caustic soda. They are resistant to static loads, are used for welded structures that are not subject to vibration or shock, operated at t ° from -20 ° C to 1100 ° C. It — tube heat exchanger operating in a hostile environment, covers thermocouples, furnace fittings, electrodes spark incendiary spark, such pipes are used in petroleum, chemical industry, mine water intake, in the production of medicines, food industry, construction.
All products 15H25T (EI439) 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.