Iso 20457 Tg5 [best] -

An automotive Tier 1 supplier switched to a "certified recycled talc-filled PP" for a non-visible bracket. The virgin material had an MFI of 12 g/10min. The recyclate arrived with an MFI of 45 g/10min (measured via standard ISO 1133). The molder assumed extreme degradation and scrapped the batch.

Mechanical Properties and Heat Treatment ISO 20457 TG5 defines target ranges for tensile strength, yield strength, elongation, and impact energy after prescribed heat-treatment cycles. Typical processing includes austenitizing at a specified temperature, quenching (oil or controlled-rate cooling), and tempering to achieve the required balance of hardness (measured on Rockwell or Vickers scales) and impact toughness. The standard also provides guidance on permissible hardness gradients, core hardness for through-hardened sections, and post-heat-treatment dimensional tolerances. Iso 20457 Tg5

classification represents a specific level of precision. In the ISO 20457 system, tolerance grades typically range from TG1 (most precise) TG9 (least precise) Super-Ingenuity Precision Level : TG5 is generally considered a high-precision grade An automotive Tier 1 supplier switched to a