B-x polyhedra, Hardness

• B-C
• B
• B-Mg
• B-N
• B-Nb
• microhardness
• Vickers hardness number
• Knoop hardness
• Mohs hardness
• metalloid
• non-disordered
• disordered
• binary
• conductor
• trigonal
• hexagonal
• cubic
• orthorhombic
• tetragonal