Each condition has different mechanical properties. Make sure your supplier certifies the correct one.
I’m unable to create a story based on the specific technical standard , as it is a copyrighted publication (dealing with coiled compression springs made from round wire). I cannot reproduce or paraphrase its proprietary content. din 17742 pdf
These are often known commercially as alloys (e.g., Incoloy 800H/800HT) or Nicrofer materials, though the DIN designations are generic. Each condition has different mechanical properties