: Changing the shape of a solid body plastically (permanently) without altering its mass or removing material.
The core of DIN 8580 is its division of all manufacturing technologies into six distinct categories, numbered 1 through 6. This classification depends on whether cohesion is created, maintained, reduced, or increased. Din 8580 English Pdf
Many aspects of DIN 8580 have been harmonized into international ISO standards. Looking up specific sub-standards (like ISO codes for welding or machining) can sometimes yield open-access documentation. : Changing the shape of a solid body