Stainless Steel Heat Discoloration Chart

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.

Stainless steel heat discoloration chart.

Heat tint temper colours on stainless steel surfaces. Heat tint recognition chart for stainless steel welding pictures 1a to 1 g provided by norsok for the norsok standard m 601 welding and inspection of piping edition 5 april 2008 annex b. July 16 2019 author. 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.

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. This information must be used with care when intrepeting the hint tint colours observed on stainless steel surfaces as the heating conditions are not specified. 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. Thanh qc nguyen le 0 comments.

Stainless steel is an alloy that contains some chromium so it can resist. 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. Heat tints discoloration in stainless steel welding.