{
 "url": "https://activatedigital.ai/knowledge/digital-product-passport/aluminium/alloy-temper-batch-identity",
 "title": "Alloy, Temper and Batch: What Actually Identifies Aluminium?",
 "description": "How aluminium alloy designation, temper, product form, governing specification and delivered batch identity differ, and why nominal values are not batch facts.",
 "territory": "dpp",
 "category": "aluminium",
 "direct_answer": "**Specification truth and delivered-material truth are separate assertions.** An aluminium alloy designation, temper, product form or specification and delivered batch identity are different layers of truth. Keeping them separate prevents a nominal specification value from being published as if it were measured for the material that actually arrived.",
 "last_verified": "2026-09-10",
 "datePublished": "2026-09-10",
 "dateModified": "2026-09-10",
 "legislation": [],
 "primary_sources": [
  {
   "url": "https://www.aluminum.org/bookstore",
   "name": "The Aluminum Association, Bookstore and Registration Records"
  },
  {
   "url": "https://www.speira.com/sustainability/transparency/digital-product-passport/?speiraID=9013514010",
   "name": "Speira speira.ID example coil 9013514010"
  },
  {
   "url": "https://www.alcoa.com/global/en/what-we-do/aluminum/cast-products/pdfs/Alcoa-EverCast-SellSheet.pdf",
   "name": "Alcoa EverCast C862F Technical Data"
  },
  {
   "url": "https://www.riotinto.com/can/-/media/content/documents/products/aluminium/rt-aluminium-foundry.pdf",
   "name": "Rio Tinto, Primary aluminium foundry alloys, A356.2"
  }
 ],
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  "https://activatedigital.ai/knowledge/glossary#digital-product-passport",
  "https://activatedigital.ai/knowledge/glossary#economic-operator",
  "https://activatedigital.ai/knowledge/glossary#erp",
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 ],
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  "html": "https://activatedigital.ai/knowledge/digital-product-passport/aluminium/alloy-temper-batch-identity",
  "markdown": "https://activatedigital.ai/knowledge/digital-product-passport/aluminium/alloy-temper-batch-identity.md",
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}