Unlike standards for machined metal parts, DIN 16742 accounts for the unique behavior of plastics. The standard distinguishes between two types of dimensions:
in the standard, requiring the most accurate molds and stable processing conditions. din 16742 - tg5
: Uniform wall thickness is essential for quality. Recommended minimums vary by material, such as for ABS and for Polycarbonate. Unlike standards for machined metal parts, DIN 16742
is characterized as a "high-standard" or "accurate" production grade. While TG6 is often the baseline for standard commercial plastics, TG5 represents a step toward Precision Production Unlike standards for machined metal parts
Achieving TG5 is —it is a feature of the manufacturing process .
This significant difference in allowable deviation dictates the complexity of the mold design, the process control required during injection, and the cost of quality control inspection.
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