steel tempering colors borrowed from the first link
Tempering Metallurgy Wikipedia A Woodworkers Guide To Tool Steel And Heat Treating.
Tool Steel Color Chart View By Material Group Dura Mill.
Tool Steel Color Chart Effects Of Common Alloying Elements Specialty Metal.
Tool Steel Color Chart Pipe Color Code Standard And Piping Color Codes Chart.
Tool Steel Color ChartTool Steel Color Chart Gold, White, Black, Red, Blue, Beige, Grey, Price, Rose, Orange, Purple, Green, Yellow, Cyan, Bordeaux, pink, Indigo, Brown, Silver,Electronics, Video Games, Computers, Cell Phones, Toys, Games, Apparel, Accessories, Shoes, Jewelry, Watches, Office Products, Sports & Outdoors, Sporting Goods, Baby Products, Health, Personal Care, Beauty, Home, Garden, Bed & Bath, Furniture, Tools, Hardware, Vacuums, Outdoor Living, Automotive Parts, Pet Supplies, Broadband, DSL, Books, Book Store, Magazine, Subscription, Music, CDs, DVDs, Videos,Online Shopping