Duro-Chrome has the capabilities to bake all plated parts to reduce the changes of hydrogen embrittlement according to Military Spec. QQC-320.
Duro-Chrome has the lowest coefficient of friction of any structural metal. Its low coefficient of friction means less drag and therefore, less heat is generated as the parts rub together.
Duro-Chrome on Duro-Chrome - static: 0.14 - sliding: 0.12
Babbit on Duro-Chrome - static: 0.15 - sliding: 0.13
Steel on Duro-Chrome - static: 0.17 - sliding: 0.16
Babbit on Babbit - static: 0.54 - sliding: 0.19
Steel alone - static: 0.30 - sliding: 0.20
This property permits faster operations of machines, reduces lubrication costs, power consumption and packing problems. It prevents sticking to Bakelite rubber and other plastic substances. Oil readily adheres to it further decreasing its coefficient of friction
Duro-Chrome is super hard, 72rc as deposited. Only the diamond is harder than chromium. Duro-Chrome's high hardness value makes it abrasion and corrosion resistant. It is essential that Duro-Chrome be applied to a base metal which is hard enough to give it the support necessary for the job.
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Duro-Chrome resists attack by most organic and inorganic compounds except sulfuric acids, to gain the greatest advantage of this property. The Duro-Chrome deposited surface must be continuous and free from pin holes and other imperfections. Surfaces with good corrosion resistant properties will exhibit less chemical attack with no generation of metallic oxidation products which become abrasive particles damaging the base metal.
The melting point of Duro-Chrome is 2930F. It will not oxidize at temperatures under 1200F. When properly deposited, it protects base metals from scaling in heat and is not affected by molten tin, zinc, brass or aluminum. Heat tends to soften chromium at temperatures above 700F. yet it still retains its low coefficient of friction and resistance to oxidation and corrosion thus providing resistance to abrasive and chemical attacks.
When properly electro deposited, Duro-Chrome has positive adhesion to all base metals and mold alloys. The adhesion of Duro-Chrome is achieved by a molecular bond. Bond strengths have been measured as high as 64,000 psi on some ferrous metals. Duro-Chrome will not chip, crack, or peel when applied to base metals with a deposit of less than .0005.
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