It is supposed to be great for rust-proofing. And out of interest, on a hardness scale....
"The industry-standard Knoop microhardness test for mechanical hardness confirms what Byrnes said. On that scale, diamond is 7,000, nickel silicon carbide is 3,300, hard chrome is 972, hardened steel is 822, and tooth enamel is 343."
"The industry-standard Knoop microhardness test for mechanical hardness confirms what Byrnes said. On that scale, diamond is 7,000, nickel silicon carbide is 3,300, hard chrome is 972, hardened steel is 822, and tooth enamel is 343."