03Х13Н8Д2ТМ, ЭП699 tape, sheet, round, wire

relevance

Corrosion resistant austenitic aging of the alloy 03Х13Н8Д2ТМ (ЭП699) is used for the manufacture of welded structures, operating at a temperature from 20 °C to -196°C. the most important qualities of this material include high corrosion resistance, hardness up to 9000 N/mm, good processability, availability of all types of processing. Due to the optimum composition of alloying elements: chromium, Nickel, molybdenum, copper, titanium, etc., this alloy resists the effects of moisture and aggressive factors, providing reliability and durability of the equipment. Steel is not prone to stress corrosion cracking in conditions of high humidity, salt fog, industrial atmosphere rich in sulphur.

production

The percentage 03Х13Н8Д2ТМ according to GOST 5632−72.

Ti C Si Cr Mo Cu Mn P S Ni Fe
0,7−1 ≤0,03 ≤0,5 12−13 0,25−0,75 1,5−2 ≤0,5 ≤0,02 ≤0,02 7,8−8,8 basis

Steel is smelted in open induction furnaces. Manufacture of semi-finished products normalized following: 14−1-2176−77; 14−1-1655−75. The semi-deformed in hot state (in the temperature interval 1160−850°C) and in cold condition. Hardening of semi-finished products is at a temperature of 880 °C with air cooling. Aging at a temperature of 600 °C for 2 hours.

the basic qualities at 20°C

UD. weight 7.8 g/cm3, the thermal conductivity of 19 W/(JHC), the Poisson’s ratio of 0.25; the modulus of elasticity 195.000 N/mm; the shear modulus of 78,000. Cooling of heat-treated steel to -253°C causes slight changes in the dimensions of no more than 0,0004%.

welding

Steel welded 03Х13Н8Д2ТМ manual and automatic TIG welding. Used filler material brand ЭП699 or ЭП225. Welded joints are resistant to formation of hot and cold cracks.

application

Used for products operating in conditions of increased aggressiveness, serves for the production of heat exchangers, cryogenic equipment. Can be operated at t° to -196°C. is Used for welded components of chemical equipment: chemical reactors, pipelines and storage tanks.

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