The Barong (or Barung) machete is a traditional weapon of the Tausug Moro of Sulu and it makes part of the Parang family. It has variable size (30 to 60 cm) and it has origin from Philippines archipelago, particularly from Mindanao and the Sulu Islands.

Without going into detail, because it is a complex subject that requires knowledge of chemistry and physical-chemistry, it is necessary to know that crystalline grains structure of the steel is closely related to the temperature at which the material is treated and with its cooling speed.