8 - DID_Certification_Data_for_Non_Nuclear_Level_I.pdf

This is a Data Item Description (DID) document that establishes the format and content requirements for certification data reports on Non-Nuclear Level I materials. The document, identified as DI-MISC-81020 and approved under OMB No. 0704-0188, is under the primary responsibility of N/SEA 07Q and supersedes UDI-T-23191B and DI-MISC-80705.

The certification data must include quantitative chemical composition and mechanical properties required by specification and contract, with material traceability maintained through unique identification codes marked on the material throughout all fabrication and manufacturing phases. Data format requirements specify that material certification data shall be recorded on the testing company's letterhead, bearing the date, name, organizational title, and signature of the authorized representative. Certification data must represent the finished product; if starting material or raw stock is processed without affecting chemical composition or mechanical properties (such as machining), the original mill certification is acceptable. However, if metal working processes or alloying alter the material's original condition, recertification is required with altered mechanical properties or chemical composition remaining within specification limits. For foreign certifications, traceability or conversion of foreign language and units of measure into English or current U.S. units must be annotated on furnished foreign certifications or included on an addendum. The document includes an example certification report template showing required fields such as material type, heat number, chemical composition percentages, and mechanical properties including tensile strength and elongation data, with sampling performed in accordance with QQ-N-281D.