Св-08Х20Н9Г7Т - 1.4370 tube, wire, circle

International Equivalent

Mark Analogue W. Nr. Aisi Uns En Order
12X17G9AN4 EI878 1.4373 202 X12CrMnNiN18-9-5 Delivery from the stock, in stock

Welding wire Св-08Х20Н9Г7Т.

The given wire is manufactured in accordance with GOST 2246-70, RD 03-613-03 and technical conditions 1220-005-84 823 540-2010. The wire is used for manual arc welding of critical components of austenitic steel grades: 12X18H9T, 08X18H10T, 08X18H12B and the like.

It is also used for welding of internal parts which are operated under high pressure and temperature of 570-650 °, as well as for welding steels of the same grades, if the weld does not have strict requirements for resistance to intergranular corrosion.

Percentage composition

Cu P S V N Al W
Not more than 0.25 Not more than 0.035 Not more than 0,018 By fact ex post facto By fact By fact
Mn Si С Cr Ti Mo Ni
5,00-8,00 0,50-1,00 Not more than 0.10 18,50-22,00 0,60-0,90 Not more than 0.25 8,00-10,00

Mechanical characteristics of Sv-08Х20Н9Г7Т wire:

Temporary tensile strength of high-alloyed and alloyed wire in accordance with the standards.

Wire diameter, c mm for the production of electrodes for cladding (welding)
1,6 686-980 (70-100) 882-1274 (90-130)
0,8-1,5 - 882-1323 (90-135)
St. 2.0 637-931 (65-95) 686-1029 (70-105)
2,0 686-980 (70-100) 784-1176 (80-120)

Limit deviations and wire diameters as specified:

Nominal diameter In the manufacture of electrodes for cladding (welding)
1,6; 2,0 - -0,12
0,8 -0,06 -0,07
2,5; 3,0 -0,09 -0,12
1,2 - -0,09
1 -
1,5 -0,09
4,0; 5,0; 6,0 -0,12 -0,16

Ferritic phase:

The composition in the wire of the ferritic phase is regulated solely by agreement of the parties.

The chemical properties of the weld metal:

Cu P S V N Al W
0,12 0,018 0,004 0,05 0,02 0,05 0,001
Mn Si С Cr Ti Mo Ni
7,24 0,68 0,07 20,75 0,71 0,05 8,65

Welding position:

N1, 2, N1, 2, N45, C1, D

Welding characteristics:

Good quality formation of filling, facing and root layers of the weld, stable arc burning. Welding wire clad metal is used, as well as in argon (inert gas).

The mechanical characteristics of the weld metal (the test in the process of submerged-arc welding):

Welding wire grade Elongation, % Relative elongation, in % Yield strength, in σ T, MPa Tensile strength σ B, in MPa Tensile strength, in KCU J/cm2
Св-08Х20Н9Г7Т 33 320,1 598,3 119,7 - 120,2

The weld metal is not prone to intergranular corrosion.

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