guid - hear
- hardening room
- hardening shop
- hardening strain
- hardening tank
- hardening temperature
- hardening tongs
- hardening trough
- hardening with subsequent drawing
- harder
- hardest
- hardfacing
- hardfacing alloys
- hardhead
- hardie hole
- hardness
- hardness ageing
- hardness anisotropy
- hardness factor
- hardness figure
- hardness indentation
- hardness index
- hardness measurement
- hardness measuring magnifier
- hardness meter
- hardness number
- hardness penetration
- hardness test
- hardness tester
- hardness value
- hardness-depth curve
- hardness-temperature plot
- hardometer
- hardware bronze
- haringcell
- harmonic quantity
- harmonical mean
- Harrison process
- harrow
- harsh (blowing) flame
- Hartree self-consistent field