Stainless Steel Heat Discoloration Chart

Rainbow discoloration aka heat tint aka rainbow stain rainbow discoloration otherwise known as heat tint is the ugly rainbow pattern that develops inside the pan or stainless cooktops and sinks due to excessive heat or too rapid heating.

Stainless steel heat discoloration chart.

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. Stainless steels is usually less affected by weld heat tinting 2 this article will introduce for consideration color samples similar to those shown on the aws d18 2 chart performed on electropolished 316l stainless steel in an effort to show the need to for an industry accepted color chart for electropolished material. What i am concerned about is a line that is welded to a thermal oxidizer which operates around 600 deg c which is around 1112 deg. 2a 2b 2c 2d 2e 2f 12 ppm oxygen level 60 70 ppm oxygen level 70 90 ppm oxygen level 200 ppm oxygen unacceptable 250 ppm oxygen unacceptable 500 ppm.

July 16 2019 author. Does anyone know where i can obtain a chart that would describe the heat tint discoloration of stainless steels. Why does this happen. Thanh qc nguyen le 0 comments.

Heat tints discoloration in stainless steel welding. Heat tint colour chart the table below represents the temper colours that are likely to form on stainless steel type 1 4301 aisi 304 if heated in air. Stainless steel is an alloy that contains some chromium so it can resist.