In slang, "hot" can mean urgent. But technically, for steel, "hot" refers to the manufacturing process. If you need the PDF urgently, say "EN 10204 3.1 PDF – URGENT REQUEST."

If you receive an email with "EN 10204" and a spreadsheet of heat numbers, use a PDF automation tool (like Adobe Acrobat Pro or Power Automate) to extract and rename the PDFs to [Heat_Number]_EN10234.pdf .