Commercially pure or low alloy- nickel is useful in chemical processing due to its resistance to various chemicals including caustic alkalies, in electronics due to its high electrical conductivity, and heat exchangers due to its thermal conductivity and ductility.
Nickel 200 and 201 are both commercially pure (99.6%), while the latter's lower carbon content prevents embrittlement at temperatures over 600 degrees F. Nickel 270 is a high-purity grade made by powder metallurgy.