Classe · NACE Rev. 2.1 / TEÁOR'25
25.52 Tratamento térmico de metais
Heat treatment of metals
As notas explicativas oficiais são apresentadas em inglês.
Esta classe compreende
- general activities for the heat treatment of metals
- thermomechanical heat treatment of metals (e.g. preheating, annealing, hardening, tempering, quenching, deep freezing of metal)
- thermochemical heat treatment of metals (e.g. carburising, carbonitriding, nitrocarburising, nitriding, oxidising, sulphidising, boriding)