03KH17N14M3 - 1.4404 - aisi 316L tube
General characteristics
Brand 03Х17Н14МЗ is an effective material for the production of critical components and equipment used in the synthesis of urea and caprolactam. At a temperature of from -70° to +200° alloy can withstand pressure up to 200 N/mm2. In the production of urea used for the production of lining and mixers urea synthesis and in the production of caprolactam — reactors for the oxidation of cyclohexane.
This brand belongs to the group of high-alloyed alloys of austenitic class applied in the manufacture of welded equipment for the extraction phosphoric acid, etc. compounds, which are characterized by increased aggressiveness. Has a high resistance against stab and intergranular corrosion, which allows it to operate in aggressive environments at temperatures up to +80°C. Resistance of the welds is identical to the base metal. The welds in the medium of urea synthesis are the rate of corrosion 0,041−0,11 mm/year.
The chemical composition of the alloy 03Х17Н14МЗ
| Fe | Cr | C | Mn | P | Ni | Mo | Si | S | P |
|---|---|---|---|---|---|---|---|---|---|
| DOS. | From 16.8 to 18.3 | ≤0,03 | From 1 to 2 | ≤0,035 | From 13.5 to 15 | From 2.2 to 2.8 | ≤0,4 | ≤0,02 | ≤0,035 |
Production
Brand 03Х17Н14МЗ is classified as stainless steel corrosion-resistant ordinary heat-resistant and heat-resistant austenitic steel. Is smelted in electric arc furnaces. This grade is fully consistent with the strict requirements of the state standard. Production is regulated by the following GOST: 25054−81, 5582−75 and 5632−72 and specifications: 14−1-240−72; 14−1-1154−74; TU 14−1-692−73; 14−1-1183−74; 14−1-1541−75; 14−3-396−75;14−1-2132−77; 14−1-2144−77, 14−1-2134−77.
Physical properties at 20°C
-The thermal conductivity of 0,134 · 102 W/(m · K).
— Density of 7.7 · 103 kg/m3
— The modulus of elasticity of 17.8 · 10 — 4 N/mm2
Hardness HB 200 MPa -1
— Resistivity 0.75 Omhm2/m.
— Magnetic permeability in a field of 500 e равна1,255 micro Tesla/m.
Treatment
In forging, rolling and forging in the initial stage of the technological process t° = 1170 °C, and at the end of the process is 900 °C. This steel is quite easy to cut. It has good weldability in all types of automatic and manual welding. In manual arc welding uses electrodes OzL-20 with wire rod 03Х17Н14М2 (or ЭП551). In the environment of protective gas or in automatic welding under a flux is used the same wire.
Use
Production of welded chemical equipment, for example, such as: heat exchangers, reactors, pipelines. The production of parts of metallurgical mining equipment, chemical tanks, which are operated in wet-process phosphoric, 55% sulfuric and acetic acid and other corrosive environments at t° to 80 °C. Mark 03Х17Н14МЗ used in equipment designed for the production of mineral fertilizers, for the manufacture of welding wire and welding electrodes for connections of fittings, joints in pipelines, repair welds equipment that operates in a radioactive environment and tubes to the housing of the apparatus. Steel 03Х17Н14МЗ used as a cladding layer in the production tsentrobezhnolityh pipes, coils for tubular furnaces and a two-layer corrosion-resistant hot-rolled sheets, plants for the production of ethylene, ammonia, carbon disulphide, hydrogen other chemical substances.
Buy at best price
Large assortment of heat-resistant rolled brand 03Х17Н14МЗ always in stock LLC «AVEK global». The quality of the finished product is ensured absolute compliance with technological production standards. The order execution time is the shortest. If you have any questions, you will receive detailed advice from experienced managers. For wholesale orders the company provides flexible system of discounts.