hardness. n. 1. the quality or condition of being hard. 2. (Minerals) one of several measures of resistance to indentation, deformation, or abrasion. See Mohs scale, Brinell hardness number.3. (Chemistry) the quality of water that causes it to impair the lathering of soap: caused by the presence of certain calcium salts.ardness. n. 1. the quality or condition of being hard. 2. (Minerals) one of several measures of resistance to indentation, deformation, or abrasion. See Mohs scale, Brinell hardness number.
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Brazing is a process that joins two pieces of base metal when a melted metallic filler â the braze â flows across the joint and cools to form a solid bond. Similar to soldering, brazing creates an extremely strong joint, usually stronger than the base metal pieces themselves, without melting or deforming the components.raze, like solder, comes in a stick, disc or wire, depending on the user's preference or the shape of the joint. After the base metals near the joint have been heated with the torch, the braze is applied to the hot pieces so that the braze melts and flows around the joint.