Technical characteristics and purpose of welding wire SV08G2S

Parameters and purpose

The production of copper-plated wire SV08G2S is carried out on the basis of GOST 2246-70, the main application is in the form of a consumable electrode for semi-automatic equipment and for argon arc welding.
Explanation of the abbreviation:

• SV - welding work;
• 08 - amount of carbon;
• G - presence of manganese;
• 2—percentage content;
• C - 1% carbon present.

To obtain unique technical parameters, these products are alloyed with refractory metals.

Decoding wire markings and its main advantages

The abbreviation Sv-08G2S only at first glance is an incomprehensible set of numbers and letters. It is easy to decipher: the two letters at the beginning of “Sv” mean that this is a welding material. “08” indicates the C content in hundredths of a percent; the letter “G” is established by GOST to indicate Mn. Manganese was added to streamline the crystalline structure of the weld. The following number “2” indicates the content of this element as a percentage. The letter "C" stands for Si, the absence of numbers means that the Si content is less than one percent. This element is added to improve physical and mechanical properties.

Maintaining the proportion of Si to Mn at 0.83 to 1.95 makes it possible to achieve stability of the chemical composition against the background of increased strength and durability of the weld.

Download GOST 2246-70

The wire also contains the other chemical elements mentioned above, such as nickel, chromium, copper, sulfur and phosphorus. According to GOST requirements, since their content is less than one percent, they are not reflected in the designation.

Receiving process

Wire 08G2S is a common brand because it is universal - it is used to weld low-alloy steels and metals containing carbon. It is ideal for the work of novice welders and experienced craftsmen, sold in cassettes for professional use weighing 15 kg or more, a compact version - in 5 kg spools.

During long-term storage, the wire does not unwind, since the rows are wound tightly. For production purposes, welding wire of this marking is sold in coils from 250 kg to a weight of more than a ton. Such packaging has a beneficial effect on the wire and, when passing through the automatic feeder, does not wear out the parts due to twisting. The cost in packaging is much cheaper than wound on reels or cassettes.

Additive melting point

This is also an important fact for achieving quality. The fact is that the melting temperature of the additive should ideally be slightly lower than the melting temperature of the elements being welded, or, in extreme cases, the same. This is required due to the fact that the elements being welded are first heated with an electric arc until the edges of the parts being welded melt, and then filler material is added, which will begin to melt a little later. If the melting temperature of the filler rod is higher than that of the base metal, the metal may burn out.

If the welding rules listed below are followed, the result will be a smooth seam, high strength and quality. If the melting temperature is not selected correctly, there is a risk of cracks in the metal.

Basic rules for quality welding:

1. The additive must have the same metal thickness as the thickness of the parts being welded.
2. The cleanliness of the wire plays an important role: it should be free of scale, paint, oil, and various contaminants.
3. Melting of the wire should occur smoothly, without jerks; this is the task of a high-quality welding machine and, partly, a welder.
4. The seam must be laid evenly, it should not have pores or cracks, the metal must be solid, without breaks.

Typically, welding metal with welding wire is carried out in an environment of carbon dioxide or argon, but there are other options for welding metal. Shielding gas is needed to protect the bath of metal being welded from oxygen, in this case the seam is much neater and smoother. When welding any non-ferrous metal, you need to select wire with the most similar metal composition.

To weld aluminum, you need wire SV-97, SV-A85, you can also select its analogues from a foreign manufacturer, for example:

1. ER 1100;
2. OK Autrod 1070;
3. OK Autrod 18.01.

To weld low alloy steels, you need to have a lot of wire. The fact is that the demand for welding low-alloy metals is much higher than non-ferrous, high-alloy or any other types. Perhaps the most common wire is the SV-08G2S grade. Manufacturers produce this type in two versions:

1. Without protective coating;
2. Copper plating. This option is considered to be of higher quality, resulting in a more even arc burning, and reduced wear on the consumables of the welding machine, for example, a copper tip. The copper coating also protects the welding wire from corrosion during long-term storage.

If you use filler rods or filler wire when welding metals, you can use flux. Flux has the ability to influence the structure of the seam, the seam is even and smooth, but without flux the seam will be subject to premature destruction. Also, and this is also very important for the quality of welding of the products being welded, flux makes the welding seam more tensile, which increases the reliability and durability of the product.

Type and presence of chemical elements

Wire marked SV08G2S is available in the following types: with low copper content and copper-plated with the addition of the letter “O” at the end of the abbreviation.
Percentage content:

• silicon from 0.7 to 0.95;
• manganese no more than 2.1;
• copper 0.25 and 0.3;
• nickel 0.25;
• sulfur less than 0.025;
• carbon in the range of 0.05–0.11;
• phosphorus about 0.03;
• chromium 0.2.

For a product marked SV08G2S-O according to GOST, the presence of nitrogen is allowed, but not more than 0.01%.

Recommendations

As an addition, we will provide you with some recommendations regarding the purchase of a welding helix. You can use these same instructions when purchasing other welding parts.

A certificate of conformity is the first request from the sales consultant before purchase. The certificate shows whether the wire actually meets the standards of the certificate.

This will save you from low-quality and counterfeit components. You should also not forget about the rare possibility of certificate forgery.

Mechanical characteristics

Manufacturers of such products necessarily carry out strength testing , so any batch of shipped wire of this brand meets the requirements listed in the table.

At the same time, the elongation coefficient (relative elongation coefficient) is up to 30%. Yield strength is in the range of 415-440 MPa, and the impact strength value is 56 J/cm2 at 40°C and 69 J/cm2 at 20°C.

Distinctive features

If we compare the SV08G2S welding wire with other analogues, it has the following differences:

1. Stability of the welding arc, which reduces the occurrence of electrode sticking to the surface of the metal being welded.
2. Supports a wide range of different welding modes.
3. Suitable for many types of semi-automatic industrial stands and apparatus.
4. Minimizes spattering of molten metal, which improves the strength characteristics of the weld.
5. Re-igniting the arc is easy and quick.
6. Saves consumables, such as copper tips.

All of the listed features make it possible in practice to weld any metal structures through a strong and reliable seam connection, while the edges of the parts are completely welded and do not have negative gaps, porosity and other similar defects.

Where are welding jobs needed?

It may even be that some people may need welding work in a domestic environment, but the overwhelming majority of welding work is required in a production environment, where welding is considered almost an integral function of production. When a situation arises in which it is necessary to weld metals together , the question also arises of how this work should be performed, what welding machine and materials should be used to do this, and similar issues.

There are various methods of welding metals, various consumables. They are selected depending on what metals need to be welded. If you need to weld non-ferrous or refractory metals, you should use a welding additive of a certain type.

How is the grade of material selected?

Such a question may well seriously puzzle a beginner, but if you understand everything consistently, then there is nothing overly complicated in this matter. There is a list that indicates what type of welding certain metals should be.

Application area

The wire is produced in different sections, so it is used to connect thin-walled and thick metals: for example, in everyday life a diameter of 2 mm is often used to repair small parts, and a cross-section of 6 mm is used in the engineering industry for welding the base of machine tools or other powerful metal structures.
Copper-coated welding wire SV08G2S-O and its application:

• manual welding, when argon and its mixture with CO2 are used for protection, and an infusible tungsten electrode is used;
• semi-automatic version with argon protection;
• as an alloying additive for the weld pool, when the melting flux forms a protective cloud from possible oxidation, and the solidifying slag forms a solid surface with similar protective properties during the crystalline formation of the weld.

SV08G2S-O has better compatibility with all manufactured semi-automatic machines, helps to reliably join manually any carbon steel with high quality seams . Well-known experts in welding technologies note the special uniqueness of wire with such markings for forming a seam bead and uniformly filling the gaps between the edges of parts with molten metal.

Deposition coefficient

Surfacing work is carried out in production to correct minor defects in welding, as well as to give surfaces improved physical properties. The wire deposition coefficient (hereinafter abbreviated as CNC) is one of the most important parameters of welding materials.

The specific value of the KNI is determined:

• The chemical composition of the resulting compound.
• The presence of a joint coating - with a high percentage of copper content or not.
• The polarity of the welding current is direct or reverse.
• Type of current - direct or alternating.

The deposition rate is 8.5 g/Ah and does not fall below.

Requirements for delivery conditions

With the consent of consumers, products are supplied in reels or cassettes weighing 5 kg or 15 kg. The wire winding should be a continuous thread, laid in dense rows that prevent it from unwinding arbitrarily during transportation.

Large-diameter products are sold in sealed packages without winding on reels, weighing 80 or 250 kg. Heat treatment of the supplied wire is allowed to improve its properties, if this was not provided for according to the standard manufacturing technology. The surface of copper-plated products may sometimes have processing residues in the form of soapy grease upon delivery. This, in accordance with GOST requirements, is permissible in small quantities, but the lubricant should not contain sulfur and graphite.

Why do you need to know KNP

Each performer, when carrying out similar work, must know this parameter, since it determines the amount of deposited metal over a certain time period, at a predetermined current value.
The KNI can be of a higher value, which directly depends on:

• types of surface coating of metal structures being connected;
• chemical components of metal products;
• type of current polarity used.

V. N. Glazov, education: vocational school, specialty - 4th category welder, work experience since 1992: “Young specialists need to devote a lot of time to theoretical training, then in practice they will confidently apply the acquired knowledge and not hesitate when choosing different welding parameters on the chemical composition of metal structures."

Main advantages

Wire of similar markings allows you to make high-quality sealed seams; during welding, the arc is characterized by stable combustion, regardless of the equipment used: it is budget class or for professionals. Restarting the arc when it suddenly goes out is not a problem even for beginners.

When welding in shielding gas, the metal practically does not spatter, the seam joint has a pleasant appearance, which is important when repairing structures that remain in plain sight. With this connection, additional processing or grinding is not used, as it is unnecessary. When using a copper tip, its melting during long-term operation is insignificant, because the wire marked SV08G2S has absolutely no effect on it.

Packaging and certificates

During factory winding, SV08G2S wire is packaged in the following containers:

• K-200 coils, 5 kg each;
• K-300 - 15 kg;
• rosettes and frame cassettes 15-16 kg each;
• cardboard boxes, European-style pallets or stretch film;
• skeins with two layers of impermeable paper or fabric for packaging - up to 90 kg;
• large coils in stretch film 1.0-1.3 t.

When stored in cassettes or reels, non-row or row winding with different tension forces is used.

There are certificates for products:

• certificate of approval from the Russian Maritime RS (Register of Shipping) category 2YMS;
• NAKS certification certificate;
• BelSt - has been operating in the Republic of Belarus since 1992;
• GOST R.

Any type of packaging of a similar brand of welding wire must have a certificate upon shipment; without them, products are not shipped to customers.

Welding wire SV08G2S light and copper-plated on cassettes, reels and coils

Welding wire with a copper-plated surface and without coating, in coils, frames and on cassettes with in-line and layer-by-layer winding in accordance with GOST 2246-70 grades SV08A, SV08G2S, with a diameter of 0.5-2.0 mm and 6.0-8.0 mm and alloyed with a diameter of 0.8-4.0 mm is supplied in coils weighing no more than 80 kg, with a diameter of 2.5-5.0 mm supplied in coils weighing 500-1200 kg.
The skeins (coils) are wrapped in waterproof two-layer packaging paper or waxed paper.

Welding wire GOST 2246-70 is used for mechanized welding methods. Manufactured in diameters: 1.2, 1.6; 2.0; 2.5; 3.0; 4.0 mm. For production, steel grades Sv08, 08A, G2S are used.

Temporary tensile strength corresponds to GOST 2246-70. Supplied in rectangular coils or on large metal reels with a capacity of up to 1000 kg.

Coils of welding wire are wrapped in moisture-proof paper, then in container fabric; they are not packaged on reels. Welding wire SV08G2S is used for the manufacture of welding electrodes.

Manufactured with a diameter of 2.0; 2.5; 3.0; 4.0; 5.0; 6.0 mm. According to their purpose, welding wire is divided into:

• for welding (surfacing);
• for the production of welding electrodes.

Welding wire is supplied on reels weighing up to 1000 kg, or in coils upon customer request.
Packaging requirements according to GOST 2246-70. Chemical composition of welding wire.

Copper-plated welding wire grade SV08G2S guarantees high welding and technological properties, stability of the mechanical properties of the metal seam and reliability of welded joints.

The main advantages of copper-plated welding wire are the close contact between the wire and the copper conductive tip:

• Stable arc burning in a wide range of welding modes when using equipment of any complexity class;
• Minimum spattering of electrode metal when welding in shielding gases;
• Low consumption of copper tips;
• Increasing the level of mechanization of welding work;
• Good arc re-ignition (especially for robotic welding);

Copper-plated welding wire SV08G2S is designed for those consumers who value a clean and reliable weld. High quality copper plated gas arc welding wire, used for welding carbon and low alloy steels: structural steel, high pressure vessel steel and shipbuilding steel.

In-line winding and correct geometry of the welding wire can significantly increase the service life of expensive semi-automatic welding machines.

Copper-plated welding wire for mechanized gas-shielded arc welding has a significant impact on the stability of the arc, the level of spatter, the quality of seams, and the reliability of operation of semi-automatic and automatic welding machines.

Many years of experience in the use of steel welding wire with a copper-plated surface indicates its undoubted advantages over wire with other types of coatings.

Welding wire is used for arc welding of machine parts in a CO2 atmosphere.
Example of symbol: Welding wire SV08G2S with a diameter of 1.6 mm, for semi-automatic welding (surfacing) with a copper-plated surface: Wire for welding 1.6, SV08G2S - O GOST 2246-70
Welding wire SV08G2S with a diameter of 2.0 mm, for welding, surfacing with copper-plated surface:

Welding wire 2.0, SV08G2S - O GOST 2246-70
Wire price. Assortment of welding wire.

Depending on the tensile strength time, welding wire is divided into two strength groups:

• Group 1: diameter 0.8-1.2 mm - 780-1080 n/mm2
• diameter 1.6 mm - 780-1080 n/mm2

The thickness of the copper coating is at least 0.15 mm, supplied on consumer metal or plastic coils;
wire cassettes; in coils of rectangular cross-section, large-sized metal coils with a capacity of up to 1000 kg. Sale of welding wire. Mechanical properties.

Welding wire. Price RUR/t excluding VAT.

How to buy light and copper-plated welding wire SV08G2S at low prices:

• fill out the simple “Place an order” form at the top of the page;
• call on the phone +7;
• send your application by email;

Delivery within the Russian Federation: Moscow, St. Petersburg, Arkhangelsk, Astrakhan, Barnaul, Belgorod, Bryansk, Vladimir, Volgograd, Vologda, Voronezh, Yekaterinburg, Ivanovo, Izhevsk, Yoshkar-Ola, Kazan, Kaluga, Kirov, Kostroma, Krasnodar, Kurgan, Kursk, Lipetsk, Omsk, Orenburg, Penza, Perm, Pskov, Rostov-on-Don, Ryazan, Samara, Saransk, Saratov, Sevastopol, Simferopol, Smolensk, Stavropol, Tambov, Tver, Tomsk, Tula, Tyumen, Ulyanovsk, Ufa, Chelyabinsk, Yaroslavl, etc.

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