GuangZhou Cgoodsteel Co., LTD
Add;326-328(4th Floor),Ping Kang Rd, Sha Xu I,Shi Qiao Str. PanYu Dist,GZ CHINA
Ph: + 86 20 84815871 Ext 8018
Fax: +86 20 84815872
Aileen: Mb/Wechat/Whatsapp: +8613543460072
www.gdgwsteel.com
Steel that has been freshly ground or polished will form oxide layers when heated. At a very specific temperature, the iron oxide will form a layer with a very specific thickness, causing thin-film interference. This causeds colors to appear on the surface of the steel. As temperature is increased, the iron oxide layer grows in thckness, changing the color. These colors, called tempering colors, have been used for centuries to gauge the temperature of the metal. At around 350。F the steel willl start to take on a very light, yellowish hue. At 400。F, the steel will become a noticeable light-straw color, and at 440。F, the color will become dark-straw. At 500。F, steel will turn brown, while at 540。F, it will turn purple. At 590。F the steel turns a very deep blue, but at 640。F it becomes a rather light blue.
Steel strip Alloy steel strip Spring steel strip Stainless steel strip High carbon steel strip Spheroidized steel strip Fully annealed steel strip Hardened and tempered steel strip carbon steel strips
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Tel:+86208481587 Ext 8018 Fax:+862084815872 Addess:326-328(4th Floor), Ping Kang Rd, Sha Xu I, Shi Qiao Str, PanYu Dist, GZ CHINA