Description

NC *7/*8: is a *7/*8 Nickel-Chrome Alloy balance mainly iron. It is suitable for continuous operation up to a maximum temperature of ***0 C and is recommended for furnace use with atmospheres, which might otherwise cause dry corrosion for higher nickel content materials. In particular, it has better resistance against sulphur attack and &#**9;green rot&#**9;, a type of corrosion produced by alternating carburisation and oxidation. A large temperature coefficient of resistance means that the change of resistance with the increase in temperature must be taken into account during design. However, this increase provides a degree of safety by reducing the electrical loading, as operating temperature is approached.