• Extra-soft: Plates, sheet, hardware, forgings
  • Sweet: Frame, profiles, current engineering, bolts, cables ordinary
  • Semi-sweet: Machine parts for mechanical, molded pieces or racks, forgings
  • Half hard: Small tools, agricultural machinery parts, transmission parts
  • Hard: Parts of tools, weapons, guides, rails and tires, springs, cutlery, molded and traited pieces
  • Superhard: Cutting tools, cables, springs