Q& A Tips: Stainless Steel Welding Mig Wire /Tig Rod

One alloy steel with a carbon content of 1.2% or less and a chromium content of 10.5% or more, we can regard it as stainless steel welding wire or rods

From the process welding materials, they are divided into Tig welding rods, Mig welding wire, submerged arc welding materials MAG welding, welding rods for arc welding etc.

From the appearance of stainless steel welding mig wire/Tig rod, there have Stainless Steel filler metal welding wire / tig rod with HS code no : 722.2300.00 , or Stainless Steel flux cored welding wire / Tig rod with HS Code no :8311.2000.00

From the different contents of C, Cr, and Ni, stainless steel welding wires can be divided into multiple models

a.ER304: Contains 18% chromium and 8% nickel, suitable for welding in environments without oxygen-containing acid detergents.

b.ER316: Contains 16% chromium, 10% nickel, and 2% molybdenum, suitable for welding in corrosive media.

c.ER308L: Contains 18% chromium and 8% nickel, suitable for welding stainless steel or other alloy materials.

d.ER309L: Contains 23% chromium and 13% nickel, suitable for welding stainless steel, nickel alloys, and other alloy materials.

In which, ER316 stainless steel welding wire with better corrosion resistance, especially in acidic environments than Er304, Therefore, 316 stainless steel welding wire is often used in fields such as marine, chemical, and medical industries.

Also, the chemical composition of stainless steel welding mig wire / tig rods, they are not complete the same. Like ER308L, MIG welding wire with higher SI content, such as ER308LSi Mig wire, compared with Er308L tig rod etc, such as ER309LSi Mig wire, compared with Er309L tig rod etc.

Due to its high Si content of ER308LSi Mig wire about 0.8%, it reduces the surface tension of the molten metal droplets, makes the molten particles finer, makes it easier to achieve excessive spraying, and makes the arc more stable. At the same time, it can also improve the wettability of the molten metal droplets, making the weld bead ripple beautiful and less prone to incomplete penetration, slag inclusion, porosity and other defects

Stainless steel welding wire has many advantages, like high strength, corrosion resistance, wear resistance, high temperature resistance, etc Thus they are widely used in various industrial fields,like in food processing, chemical industry, aerospace, medical equipment and other fields

There have two common manufacturing methods like medium frequency furnace and vacuum furnace

Medium frequency furnace which is a highly energy-efficient and efficient heating device, heats the work piece to the desired temperature through induction heating.

A vacuum furnace is a device that can perform heating treatment in a vacuum environment. The vacuum furnace uses vacuum to remove air from the furnace, creating a high-temperature and high vacuum environment, thereby improving heating efficiency.

When producing stainless steel welding wire, the vacuum furnace can effectively control issues such as oxidation and gas adsorption, thereby producing purer, inclusion free, and high-quality stainless steel welding wire,but their costs are more higher than made by medium frequency

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