Meaning
Martensitic stainless steel grades designed for plastic injection molds offer excellent wear resistance and protection against corrosive resins. Toolmakers select din 1.2083 steel when building mold inserts and cavity blocks that process corrosive polymers like polyvinyl chloride or acidic flame-retardant resins. This steel prevents the pitting and corrosion that can ruin polished mold surfaces during production.
It is a preferred European tooling standard for medical and optical plastic components that require both high hygiene and high precision.
Chromium Level
Corrosion resistance is achieved by a chromium content of twelve to fourteen percent in the alloy. In din 1.2083 steel, this high chromium level forms a passive oxide layer that protects the tool from chemical attack. This alloy composition ensures the steel maintains its integrity when exposed to condensation or humid factory environments.
Polish Quality
Mirror finishes required for optical lenses and high-gloss medical parts are possible due to the fine grain structure of the steel. After proper heat treatment and double tempering, din 1.2083 steel achieves a uniform carbide distribution that allows for high polishability. This polish quality reduces part defects such as drag marks or surface haze during extraction.
Run Lifetime
Tool longevity is maximized when the steel is hardened to forty-eight to fifty-two Rockwell C. This high hardness protects mold gates and parting lines from abrasive wear during long production runs. Using this steel reduces the frequency of mold maintenance and ensures consistent part quality over millions of cycles.
