Alloy testing is regularly performed as a quick sanity check to confirm that a given part conforms to its specified material. It is generally used to detect mixed lots of materials. It is also commonly known as ATT.
Alnico pot magnets are strong permanent magnets with great temperature resistance and are applicable up to a temperature of 450oc. It produces magnetic field strength at their poles as high as 1500 gauss (0.15 tesla), or about 3000 times the strength of Earth's magnetic field. These magnets are primarily for gripping applications. The outer surface of the magnets can be either painted or coated with zinc, nickel or chrome.