Method #1: Recover from Autosave. By default, Word auto-saves a document every 10 minutes (this can be decreased or increased, see below) that it will automatically recover if the document closed due to a malfunction. Word will not auto-save a file that has been closed willingly using the Word close button.
â¢ Is metal one of the hardest material in the world? Yes, they are but the hardest material in the world known to mankind is DIAMOND. â¢ What is the hardest metal? The hardest known metal alloy, and the hardest known metal in general, is a type of carbon steel, Alloy 1090. With a tensile strength of .84 GPa (122,000 psi) and a yield strength of .64 GPa. (67,000 psi), carbon steel is surpassed in hardness only by very hard nonmetals, such as ruby, diamond, or aggregated diamond nanorods.
The 'hardness' of a mineral is generally determined by the Mohs scale and is defined as the scratch resistance of a mineral. Diamonds are the hardest minerals known to man, but what is the hardest metal? That honor goes to chromium, a metal perhaps best known as the key ingredient in stainless steel. Chromium is also commonly used in chrome plating, which acts as a form of protection against corrosion and physical damage.