What is not a true statement when welding aluminum vs. steel with GTAW?

When welding aluminum using Gas Tungsten Arc Welding (GTAW), it is essential to consider the specific requirements that differ from welding steel. One significant aspect is the protective shade lens used during welding.

For aluminum, a lower shade lens may not provide adequate protection as the weld area can produce intense light and UV radiation. Typically, higher shading lenses are recommended for both aluminum and steel to protect the welder's eyes from the brighter than expected arc and the radiation produced. Therefore, the notion that a lower shade lens is sufficient for aluminum is inaccurate.

Using the correct shade lens is crucial for safety. Welders must ensure they are using shade lenses that comply with recommended standards to avoid the risk of eye injury, which reinforces the incorrectness of the statement regarding protective shading in aluminum welding.