Everything You Need to Know About Welding Corten Steel (with PDF)

Corten Steel Welding

Although it can be challenging to weld Corten steel, proper preparation enables successful execution. Preheating the thick plates is crucial to avoid deformation or fractures during welding. Once the metal reaches the desired temperature, welding can commence. When employing TIG welding, it is advisable to employ a gas lens cup as a protective measure against wind interference during the process.

In this article, we will dive into everything you need to know about welding Corten steel – from understanding its properties and behavior during welding to the essential safety precautions that must be taken. Whether you are an experienced welder or just starting out with this material, this guide will help you achieve top-quality results with your projects.

Welding Preheat & Interpass Temperature for Corten Weathering Steel

The consideration of preheat and interpass temperatures is crucial when working with Corten steel during the welding process. It is recommended to apply a preheat temperature ranging from 150 to 225 degrees Fahrenheit, while an interpass temperature of 400 degrees Fahrenheit should be maintained. The preheat requirements specified by AWS D1.1 are as follows:

  • For plate thickness up to 3/4 inches, no preheat is required.
  • For thickness above 3/4 inches, preheat to 100-150 degrees Fahrenheit minimum.
  • For thickness above 2.5 inches, preheat to 200 Degree F.

Corten Weathering Steel Welding Electrode/Rods & Welding Wires

Stick (SMAW) Welding Electrodes/Rods and TIG-MIG Filler Wires can be used to weld Corten Steel. These consumables are recommended for welding Corten Steel using Stick Welding, TIG Welding, MIG Welding & FCAW Welding.

Materials such as ASTM A242, ASTM A606, ASTM A588 & ASTM A847 can be welded with welding rods and welding filler wire.

  • Stick Welding (SMAW) of Corten Steel: E7018, E7018-W1, E8018-W2.
  • Welding of Corten Steel using TIG-MIG welding filler wire: ER70S-2, ER70S-6, ER80S-Ni1.
  • Corten Steel Welding using FCAW: E71-T1C, E81T1-Ni1C, E 80T-W.

Corten Weathering Steel Stick Welding (SMAW)

Corten steel develops a rust-like patina when subjected to outdoor conditions, making it a popular choice for outdoor sculptures and architectural applications. The SMAW (stick) welding method can be employed for welding corten steel.

E7018 is the predominant electrode utilized for welding Corten steel. It produces welds that exhibit medium to deep penetration and possess favorable mechanical properties. Although versatile, it is primarily employed in flat and horizontal positions.

The E7018-W1 and E7018-W2 welding electrodes are specifically designed for welding Corten steel. As a result of its higher weld deposit, it is more corrosion-resistant than E7018. Besides being able to be used in all positions, it is most commonly used in the flat and horizontal positions.

Welding Corten Steel To Mild Steel

Corten steel can be welded to mild steel without any problems. For welding Corten Steel to Mild Steel, use E7018 or E7018-W1, or E8018-W2. ER70S-2, ER70S-6, and ER80S-Ni1 can be used for TIG and MIG welding.

Welding Corten Steel To Stainless Steel

The process of welding Corten Steel to Stainless Steel involves the fusion of two distinct steel types. Corten Steel develops a rust-like appearance on its surface when exposed to the elements, while Stainless Steel is commonly utilized in food and medical applications due to its non-corrosive properties.

When welding Stainless Steel and Carbon Steel together, it is important to use a filler metal that possesses the same level of corrosion resistance as Stainless Steel. If a filler metal with lower corrosion resistance is used, Corten Steel may experience premature corrosion and failure.

To weld Corten steel to mild steel properly, use E309L Stick Welding Rod or ER309L TIG-MIG Filler Wire. Welding Corten steel to mild steel properly requires E309L Stick Welding Rod or ER309L TIG-MIG Filler Wire. Stainless steel material is diluted less when welded with low heat input.

Before welding, the weld should be cleaned of all contaminants. Remove any paint, grease, or dirt from the surfaces that will be welded using a wire brush or grinder.

Tig-Mig Welding Corten Steel

Corten steel can be tricky to weld, but with the right techniques, it can be a great way to add strength and weather resistance to your project. Corten is a great material for tig welding, as it produces clean, strong welds. Tig welding Corten steel: Here are a few tips:

You should make sure your base material is clean and free of rust and scale.

Preheat the material if possible, to help avoid cracking during welding.

Use a filler metal that has a similar composition to the base metal.

Avoid overheating the steel by welding slowly and cooling it.

What Do You Weld A588 Steel With?

A588 steel, also known as ASTM A588 or weathering steel, is commonly welded using low-alloy filler metals. The most commonly used welding wire for A588 steel is E7018-G or E71T1-GT filler metal. These filler metals provide good strength and corrosion resistance when used for welding A588 steel.

In order to weld A588 steel, a welder must use the correct welding rods and electrodes. The alloy steel A588 is composed of carbon, manganese, silicon, phosphorous, and sulfur.

It is recommended that welding rods and electrodes used to weld this type of steel have a high manganese content.

Can You Weld Corten Steel With 7018?

Welding Corten steel presents some unique considerations compared to other steel types. To achieve optimal outcomes, it is essential to select the appropriate welding wire and configure the welding machine correctly.

Many welders opt for 7018 welding wire when working with Corten steel, as it is a suitable choice for various applications. However, it is advisable to conduct thorough testing before initiating welding on a crucial project to ensure compatibility and desired results.

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