free-fall
free-falling
free-field
free-flight
free-flow
free-hand
freehand
freeing
free-jet
freely
  free-machining
free-melting
free-molecule
free-moving
free-path
free-pendulum
free-piston
free-radical
free-running
free-settling
free-space

    free-machining steel

    автоматная сталь