Hard water||334.94 Indentation hardness||276.69 Vickers hardness test||218.44 Rockwell scale||218.44 Shore durometer||174.75 Diamond simulant||160.19 Ceramography||145.62 Mohs scale of mineral hardness||123.78 Brinell scale||123.78 Operational definition||116.5 Diamond||109.22 HSAB theory||101.93 Nanoindentation||101.93 Jewelry wire gauge||94.65 Carbonate hardness||94.65 Material properties of diamond||87.37 Diamond-like carbon||87.37 Anubias||72.81 Janka Wood Hardness Rating||72.81 Knoop hardness test||65.53 Hard and soft (martial arts)||65.53 Pencil||58.25 Boron||58.25 Titanium nitride||58.25 Silicon carbide||50.96 Tool steel||50.96 Mineral||50.96 Cast iron||43.68 Tungsten carbide||43.68 Persoz pendulum||43.68 One-way function||43.68 Water softening||43.68 Hardnesses of the elements (data page)||43.68 High speed steel||43.68 Equivalent carbon content||36.4 Jerrygibbsite||36.4 Wax Carving||36.4 DGH||36.4 Aluminium oxide||36.4 Hardenability||36.4 Hardness comparison||36.4 Corundum||36.4 Philosophy and religion of the Tlingit||36.4 Case hardening||36.4 Sword making||36.4 T'ai chi ch'uan philosophy||36.4 Moissanite||36.4 Blade||36.4