62. Mechanical and acoustical properties of condensed matter (for mechanical and acoustical properties of interfaces and thin films, see 68.35.G, 68.45.N and 68.60.B; for mechanical properties related to treatment conditions, see 81.70.J, L, N in material science; for mechanical Properties of rocks and minerals, see 91.60) ( 0 Dok.)

• 62.10.+s Mechanical properties of liquids (for viscosity of liquids, see 66.20) ( 0 Dok. )

• 62.20.-x Mechanical properties of solids ( 0 Dok. )

• 62.30.+d Mechanical and elastic waves; vibrations (see also 43.40 Structural acoustics and vibration; 46.40 in continuum mechanics of solids) ( 0 Dok. )

• 62.40.+i Anelasticity, internal friction, stress relaxation, and mechanical resonances (see also 81.40.J Elasticity and anelasticity)Thermomechanical effects, see 65.70 Magnetomechanical effects, see 75.80 Piezoelectric effects, see 77.65 Elastooptical effects, see 78.20.H ( 0 Dok. )

• 62.50.+p High-pressure and shock-wave effects in solids and liquids (for high pressure apparatus and techniques, see 07.35) ( 0 Dok. )

• 62.60.+v Acoustical properties of liquids lattice dynamics, phonons, see 63 Second sound in quantum fluids, see 67.40.P ( 0 Dok. )

• 62.65.+k Acoustical properties of solids Magnetoacoustic effects, see 72.55 and 73.50.Racoustoelectric effects, see 72.50, 73.50.R, and 77.65.Dacoustooptical effects, see 78.20.H ( 0 Dok. )

• 62.80.+f Ultrasonic relaxation (see also 43.35 ultrasonics, quantum acoustics, and physical effects of sound) ( 0 Dok. )

• 62.90.+k Other topics in mechanical and acoustical properties of condensed matter (restricted to new topics in section 62) ( 0 Dok. )