Industrial Applications

noun a hardened outer layer or surface

adjective hardened by exposure to a process that makes it resistant to damage

• The metal was case hardened to increase its durability.
• I heard they case hardened the new tools for better performance.
• The mechanic said he would case harden the car parts to make them last longer.
• His experiences in life had case hardened him, making him tough and resilient.

noun a mineral consisting of a sulfide of copper and iron that is a common ore of copper

• Bornite is a copper ore mineral that has a metallic luster.
• Have you seen that cool bornite rock with all the shiny colors?
• Check out this sick bornite specimen I found while hiking!
• Her personality is like bornite - multi-faceted and full of surprises.

noun a type of synthetic resin made from the polymerization of formaldehyde and another compound, often used in the production of various plastic products

• The manufacturer decided to use acetal resin for its durability and chemical resistance.
• I heard they're making the new parts out of that acetal resin stuff.
• This acetal resin is top-notch, it won't break no matter what.
• Her heart was like an acetal resin, strong and unbreakable.