Din 16742 - Tg5 Official

Utilize finite element analysis (FEA) software to predict fiber orientation, weld lines, and localized shrinkage before cutting steel.

: When using TG5, it is recommended to define "steel-off" positions on drawings to allow for final mold adjustments after the first trial (FOT). Standard Updates : Note that was largely harmonized with the international standard

Variations in wall thickness cause localized differences in cooling rates. This leads to uneven shrinkage, sink marks, and warping that can instantly push a part outside of TG5 limits. Incorporate Generous Draft Angles: Implement a minimum of 1∘1 raised to the composed with power 2∘2 raised to the composed with power din 16742 - tg5

Unlike tolerance standards originally developed for metal parts, DIN 16742 recognises that polymers behave fundamentally differently during processing and in service. Plastics exhibit anisotropic shrinkage, viscoelastic behaviour, and strong dependence on processing parameters such as injection pressure, holding pressure, mould temperature, and melt temperature.

One of the most important practical concepts in DIN 16742 is the division into four production . These determine what level of accuracy can be achieved for a given TG: Utilize finite element analysis (FEA) software to predict

DIN 16742 is the international benchmark standard for determining dimensional tolerances and variations in molded plastic parts. Released to replace the older DIN 16901 standard, it applies to injection molding, compression molding, and transfer molding of thermoplastic and thermosetting materials.

injection-moulding-tolerances-din16742-2013.pdf - Xometry Pro This leads to uneven shrinkage, sink marks, and

Many molders hesitate to guarantee TG5 for three reasons:

As a fundamental requirement of DIN 16742, measurements for acceptance testing must be conducted under standardized conditions: and 50% ± 10% relative humidity . This specification must be indicated in the drawing's labelling field.