: While TG5 is the standard for injection molding, other grades like TG7 are used for specialized processes such as Structural Foam Moulding (SFM).
For many manufacturers, TG5 is the default starting point. If a design requires tighter tolerances (TG4 or higher), production costs usually increase due to stricter process monitoring and potential tool modifications. Key Factors in DIN 16742 din 16742 - tg5
While TG1 or TG2 might be used for stable engineering plastics like ABS or Polycarbonate (PC), TG5 is frequently applied to: : While TG5 is the standard for injection
TG5 assumes (typically ±0.2% to ±0.5% absolute shrink depending on material). Key Factors in DIN 16742 While TG1 or
TG5 allows minimal drafts if surfaces are polished, but too little draft increases wear and variability.
: While standard injection molding often defaults to TG6 for general dimensions, TG5 is considered a feasible standard for high-quality parts when the process is well-optimized.
In TG5, the allowable deviation increases as the dimension of the part grows. For example, a 10mm feature might have a tolerance of ±0.08plus or minus 0.08 mm, whereas a 100mm feature might allow ±0.22plus or minus 0.22
