It May Not Be Bad In Some Cases, But It Is Never Good.

The colour formed when stainless steel is heated, either in a furnace application or in the heat affected zone of welds, is dependent on several factors that are related to the oxidation resistance of the steel. All the beautiful pictures of stainless welds are emphasizing the beauty of the rainbow colors in gtaw and gmaw welds.

Laboratory Tests Done To Establish The Published Heat Tint Colour Charts Have Usually Been Based On Heating For One Hour.

There is more to the weld than what it looks like from the outside. This is producing a false expectation and the impression that this tinting is good.