Din 16742 - Tg5 [hot] -

The standard strictly defines surface roughness based on comparator blocks. TG5 requires surfaces to be free from visible sink marks, flow lines, and ejector pin marks that exceed a depth of 0.02 mm. It aligns roughly with Rz 10–20 µm (average maximum height of the profile).

For technical guidance on applying this standard, designers often use tools like the PolTolerances Software din 16742 - tg5

DIN 16742 TG5 represents the standard of excellence for technical plastic parts. It provides engineers with a realistic guide to what can be achieved through disciplined manufacturing. By selecting TG5, designers ensure that their parts will function correctly in complex assemblies while avoiding the prohibitive costs of over-engineering the tolerance requirements. The standard strictly defines surface roughness based on