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SV-07CR25NI13 - 1.4343 a - er309L stainless steel welding wire

SV-07CR25NI13 - 1.4343 a - er309L stainless steel welding wire

Type: ER 309/ W 23 12 L Si / EN 12072/ AWS A5.9. Analogue ER 309 is SV-07CR25NI13.

The total charaeteristic

Corrosion resistant chromium-Nickel welding wire ER 309 (SV-07CR25NI13) is intended for semi-automatic welding of dissimilar steels (stainless steel c low alloy, non-alloy steels). It is also used for welding stainless austenitic steels. In its composition it contains: Cr — 24% Ni — 13% and a small percentage of carbon DC DC in argon. This wire is used in the food industry, chemical, oil industry and in mechanical engineering.

Chemical composition of welding wire ER 309:

Mn — 1,7

Cr — 24,0

With <0,03

Ni — 13,0

Si — 0,8

Mechanical properties of the wire ER 309:

Rupture strength alloy and high-alloy wire meet the standards.

Wire diameter, mm Rupture strength of the wire, in MPa (kgf/mm2), designed
for the production of electrodes surfacing (welding)
2,0 686−980 (70−100) 784−1176 (80−120)
SV. 2,0 637−931 (65−95) 686−1029 (70−105)
0,8−1,5 - 882−1323 (90−135)
1,6 686−980 (70−100) 882−1274 (90−130)

Limit deviations and wire diameters correspond to the following standards:

Nominal diameter of wire Limit deviation for wire intended
for the manufacture of electrodes for welding (surfacing)
4; 5; 6 -0,12 -0,16
2,5; 3,0 -0,09 -0,12
1,2 - -0,09
1,5 - -0,09

Yield strength is 475 MPa;

Elongation 32% КCV

Tensile strength — 635МПа;

— 60 °C 150 J

-110°C 130 J

+20°C 150 J


Implemented welding wire in plastic spools D-300 in the form of coils or rods. Each rod has marked, Packed in plastic canisters, which weigh 5 kg. Each of these weighs about 15 pounds. The surface of the welding wire must be clean, must not have scale, rust, oil and other contaminants.


Manufacture of the welding wire is possible by drawing and hot rolling in accordance with GOST and technical conditions. There are two types of wire-type surface — pomeneny and copper-plated. The presence of copper on the surface greatly reduces the corrosion of the wire, improving the contact with the feeding device.


Chromium-Nickel welding wire ER 309 brand (or SV-07CR25NI13) is designed to austenitic stainless steels. Used for semi-automatic welding. The welding wire in the weld pool is carried out automatically in the welding machine. There are three types of semi-automatic welding: one-piece, with a separate mechanism, the feed wire and two blocks, which serves the wire. The composition of the welding wire ER 309 (SV-07CR25NI13) in percentage is: Nickel — 8%, molybdenum — 3% chromium — 18% and is made from steel 10H17N13M3T, 316, 03Х17Н14М2. This wire is alloyed with molybdenum, silicon, which eliminates all crystalline corrosion and provides high quality of weld seam. It is indispensable in chemical, oil industry, machine building and food industry. Stainless steel welding wire ER 309 is used in the welding process with the use of TIG machines and semi-automatic.


There are three types of wire: wire activated (in its composition of metal powders which is less than 5%); a solid section wire used when welding semi-automatic devices and machines, in particular in the manufacture of electrodes; flux-cored wire. Physical characteristics (plasticity) the wire is divided into first and second class. Depending on the method of processing the wire is divided into bright and blue. The first method is more common. If damaged wire is not recommended its use, since this can considerably lower the quality of the weld seam. Hardfacing process is an integral part of any steel production. They incorporate a variety of metal. Stainless steel welding wire can be used in the form of material for the production of electrodes as consumable electrode or source of metal for the weld seam. The materials used in the welding process, are divided on the isolation, modification and some other properties.


· combustion stability of the welding arc;

· re-ignition instant;

· low porosity;

· when welding the reduction of spatter;

· improve weld quality and reduce the consumption of pipette tips.

When welding stainless steel is possible to use simple electrodes of carbon (black) metal, because it leads to a significant reduction in the quality of the weld seam. This property makes stainless welding wire almost indispensable. It is made of high-alloy heat-resistant steel that is able to resist to corrosive environment.

Buy at best price

The company «AVEK global» supplies welding wire ER 309 at the best price. The popularity of this type of welding wire due to high quality products and real value. Any our products are held absolute control throughout the production chain that guarantees the high quality of our products. Modern technological capabilities at any stage of production give the opportunity to carry out individual orders in the absence of the required items in the basic version. The company «AVEK global» is always ready to produce quality products custom options to order.