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These stud bolts as the name suggests are made of 90% copper and 10 % nickel along with small amount of iron and manganese. This small addition enhances the general corrosion resistance. The Copper Nickel 90/10 Stud Bolts delivers excellent resistance to stress corrosion, erosion and bio fouling in seawater and brackish water. They also exhibit high resistance to hydrogen embrittlement and retain their mechanical properties down to cryogenic temperatures.



Also in the recent past they have undergone tests which indicate its excellent antimicrobial properties. It has proven to kill 99.9% of microorganisms within a short span of time. This has created a high demand for this material in areas where hygiene, health and safety are of concern.



These stud bolts have proven to have good strength at moderately high temperatures because of which they are preferred to be used in marine hardware, crankshafts and fishing boats. The inclusion of small amounts of iron and manganese also gives resistance to impingement due to turbulent water containing air bubbles. They are extensively used in chemical and petrochemical industries because of their combined characteristics of excellent resistance to localised corrosion in chlorinated water and toughness.

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