Can You MIG Weld Tin?

Yes, you can MIG weld tin, but it requires a specific setup, technique, and tools to achieve a successful weld without warping or burning through the thin metal. This comprehensive guide will provide you with advanced hands-on details and technical specifications to consider when MIG welding tin.

Equipment for MIG Welding Tin

To effectively MIG weld tin, you’ll need a MIG welder equipped with a spool gun and a wire feeder. The spool gun allows for better control over the wire speed, reducing the chances of burn-through. Additionally, the wire feeder ensures precise control over the wire feed rate, which is crucial when working with thin metals like tin.

When selecting your MIG welder, look for one with adjustable amperage and voltage settings. This will allow you to fine-tune the heat input to prevent overheating and warping of the tin.

Wire Selection for MIG Welding Tin

can you mig weld tinImage source: Mig weld example

The choice of welding wire is critical when MIG welding tin. Use a small-diameter wire, such as 0.23mm or 0.30mm, to avoid overheating the tin and causing warping or burn-through. Thinner wires have a lower heat input, which is essential for working with delicate materials like tin.

It’s important to choose a wire that is compatible with the shielding gas you’ll be using. Consult the manufacturer’s recommendations to ensure the wire and gas combination will provide the best results.

Shielding Gas Selection for MIG Welding Tin

The shielding gas plays a crucial role in MIG welding tin. Use a gas mixture with a high argon content, such as 98% argon and 2% CO2. Argon-based gases provide better heat control and reduce the risk of burn-through, which is a common issue when welding thin metals.

Avoid using pure CO2 or other gas mixtures with a higher percentage of CO2, as they can lead to excessive heat input and increased risk of warping or burn-through.

Welding Technique for MIG Welding Tin

When MIG welding tin, it’s essential to use a short arc length, slow travel speed, and low amperage to prevent overheating the material. Make multiple short passes instead of one long pass to distribute the heat evenly and reduce the risk of warping.

Maintain a consistent travel speed and keep the welding gun perpendicular to the workpiece to ensure a uniform weld bead. Avoid excessive weaving, as it can lead to uneven heat distribution and potential burn-through.

Joint Preparation for MIG Welding Tin

Proper joint preparation is crucial for successful MIG welding of tin. Start by thoroughly cleaning the tin to remove any oil, rust, or debris that could affect the weld quality. Use a grinder or a file to bevel the edges of the tin, creating a wider joint. This will help reduce the risk of burn-through and improve the overall weld strength.

Ensure that the tin pieces are tightly clamped or secured in place to prevent movement during the welding process. This will help maintain the desired joint alignment and minimize the risk of warping.

Practice and Troubleshooting

Before attempting to weld a critical or complex project, it’s essential to practice on scrap tin or other thin metals. This will help you gain experience and confidence in handling the unique challenges of MIG welding tin.

Pay close attention to any issues that arise, such as burn-through, warping, or inconsistent weld beads. Adjust your welding parameters, such as wire speed, amperage, and travel speed, to address these problems and achieve the desired weld quality.

Remember, MIG welding thin metals like tin requires a delicate touch and a deep understanding of the process. With the right equipment, techniques, and practice, you can successfully MIG weld tin and create high-quality, durable welds.


  1. How to MIG Weld (THIN) Sheet Metal (Plus BONUS Content) – YouTube
  2. Mig Welding Technique for Thin Metal –
  3. Welding Tin Cans… – WeldingWeb