08Х21Н6М2Т - ep54 wire, circle

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
08Х21Н6М2Т EP54 Delivery from the stock, in stock

Production and application

Steel 08X21H6M2T (EP54) is a chromium-nickel-molybdenum alloy of austenitic-ferritic class. Production is regulated by the following GOSTs: 25 054-81; 5582-75; 5632-72; 5949-75; 7350-77; and TU: 14-1-894-74 и 14-3-59-72. It is used in the manufacture of rectification columns, packed, extraction, blowing and other vessels, tanks, storages, etc . Such steel successfully works in the oxidation-reduction environments of acid production, organic synthesis, pulp and paper industry. It is used in the manufacture of acetic acid, melamine, sulfuric acid (92% H2SO4 + up to 7% SO2 at 50-60 ° C), caprolactam, urea, phosphoric acid (80% H3P04 at 100 ° C). It is also used in obtaining ammonium chloride (by evaporation), sulfite as well as sulfate pulp (filtering equipment) and ammonium sulfate with an admixture of sulfuric acid up to 20 g / l, at 100-110 ° C.

Percentage composition of the alloy GOST 5632-72

Mark C Si Mo Cr Ni Mn Cu Ti S P Fe
08X21H6M2T ≤0,08 ≤0,8 1,8-2,5 5,5-6,5 ≤0,8 --- 0,2-0,4 20-22 0,025 0,035 basis

Mechanical properties (normalized) at 20 ° C

GOST Products σw, N/mm² σ0,2, N/mm² δ5, % ψ, % KCU, J/cm2
5949-75 Sections 600 350 20 45 -
7350-77 Thick plates 590 345 20 - 59
TU 14-1-894-74 Thick plates 600 350 20 - -
5582-75 Thin sheets 590 - 22 - -
TU 14-3-59-72 Hot- and cold-deformed pipes - - 20 - -

Mechanical properties depending on temperature

6 mm thick sheet, after quenching in water at 1050 °C

σ0,2 σB δ5 σ0,2 σB δ5
Degrees °С N/mm² N/mm² % Degrees ° C N/mm² N/mm² %
-196 780 1600 31 200 330 570 34
-100 620 1200 32 300 300 540 34
-50 550 1100 32 400 300 530 32
0 420 800 40 500 200 480 32
20 440 720 50 600 200 300 30
100 380 640 39 800 150 65 -

σc - Tensile strength, [MPa]

δ5, - Relative elongation at break, [ % ]

ψ - Relative narrowing, [ % ]

Physical properties at 20°C

Density 7.7 g/cm3; electrical resistance 0.7 Ohm-mm2/m; thermal conductivity 0.126-10² W/(m - K); modulus of elasticity 0.193, N/mm2; and magnetic saturation in the 500 E field is 0.6/(Tl - m)/A.Temperature coefficient of linear expansion

t, °С 20-100 20-200 20-300 20-400 20 -500 20-600 20-700 20-800 20-900
α - 106, К-1 9,5 13,8 16 16 16,3 16,7 17,1 17,1 17,4

Corrosion resistance

According to the following GOST: 5582-75, 5949-75 and 7350-77, this steel is resistant to intergranular corrosion when tested by AM method GOST 6032-89 (24 hours in a control solution). Samples are tested after heat treatment specified in GOST, as well as after provoking heating to 500ºС (1 hour) with cooling in the air. Such steel, as well as alloy Kh17H13M2T, has 1 point of resistance in 98% acetic, 50% citric and 20% formic acid at tº boiling; in 90% formic acid at 40°C; in H3P04 of different concentrations, in concentrated H2SO4, and also has high resistance to corrosion cracking in MgCl2 solution.

Technological parameters

Hot deformation is carried out at 1150-850°C. Steel can be bent, stamped in hot and cold states, its manufacturability is the same as for 10Х17Н13М2Т. It is quenched in water at 1050°C and the same treatment is used for deburring after cold and hot deformation.

Welding

When manual and automatic argon arc and electric arc welding electrodes from alloys 06X21H6M2T with coating ANV-17, as well as electrodes Sv-04H19H11MZ with coating UONI-13. Welds are similar to those when welding 10X18H10T, have the mechanical strength of the base metal, resistant to intergranular corrosion and do not require heat treatment.

Delivery

Evek GmbH has a wide range of rolled products of 08X21H6M2T grade of any parameters in stock. Technical documentation includes data on chemical composition, limiting percentage of impurities; mechanical properties of products. From us you can buy in bulk any semi-finished products for large-scale productions. We also offer optimum conditions for retail buyers. The high level of service and responsiveness of service is the face of our company.

Buy at the best price

Evek GmbH has an unlimited assortment of stainless alloys of the highest quality. We offer special alloys at an optimal price. If you are interested in our offer please contact your nearest office. Qualified specialists will provide all necessary information regarding products, price range, sales conditions. The cost of goods depends on the parameters of products and additional terms of delivery.