NFT 51 (often written as NF T 51) is used in French standards citations for plastics and polymer-based materials. In practice, it typically points to a specific numbered AFNOR document (for example, NF T 51-xxx) that defines a particular test method or procedure.
Because equipment and setup depend on the full designation (including the part number and edition), it’s best to treat “NFT 51” as a family-style reference rather than a complete test requirement by itself. If you need help matching a customer or drawing callout to the correct document and lab setup, you can talk with our team.
NFT 51 (NF T 51) — French plastics & elastomers testing standard designation
NFT 51 is commonly encountered as a shorthand reference to AFNOR “NF T 51” documents used in plastics and elastomers testing. The exact scope, specimen requirements, conditioning, calculations, and reporting rules depend on the specific NF T 51-xxx standard being cited.
When a purchase specification, customer drawing, or internal control plan only states “NFT 51,” the practical next step is to identify the complete referenced document number and the required edition before selecting fixtures, sensors, and software templates.
Quick definition
NFT 51 / NF T 51: A French standards designation commonly used for plastics and polymer-material testing documents, where the actionable requirement is typically a full reference like NF T 51-xxx (and sometimes a Part number and year/edition).
What this standard covers
“NFT 51” by itself does not identify a single test. It usually indicates that the requirement belongs to an AFNOR NF T 51 document covering a defined plastics/elastomers test topic (for example, a particular mechanical property evaluation or a specific materials characterization procedure).
If your requirement includes additional details (a full number, part, year, property name, or equipment type), that information should be used to determine the correct apparatus and acceptance criteria.
Why this standard matters in testing
NF T 51 references commonly appear in supplier qualification, production QC, and comparative material evaluations where French or EU-facing documentation is required. Aligning the lab setup to the exact cited NF T 51 document helps avoid mismatches in specimen geometry, conditioning, loading/indentation parameters, and result reporting.
Practical caution: For quoting or compliance, “NFT 51” should be treated as incomplete unless the full designation (NF T 51-xxx, plus edition) is provided.
Common materials, product types, or applications covered
The NF T 51 family-style designation is most often associated with polymer materials and polymer products, such as thermoplastics, elastomers, and polymer compounds used in industrial manufacturing and product QC.
Because the actual test content varies by the specific NF T 51-xxx reference, the most reliable way to determine applicability is to match the full cited designation to the material form being tested (sheet, molded parts, films, compounds, etc.).
Common test or verification workflow
NF T 51-referenced workflows typically follow a standards-based pattern: define the material/product, prepare specimens to the cited geometry, condition as required, run the measurement on a defined instrument configuration, then report results in the required format.
Common workflow needs: Confirm the full NF T 51-xxx designation and edition, verify specimen geometry and conditioning, verify instrument method parameters, and ensure reporting fields match the standard/customer requirement.
Equipment commonly used for this standard
Because “NFT 51” can map to different test types, equipment selection should be driven by the specific NF T 51-xxx document. In many plastics and elastomers labs, the most common equipment families connected to NF T 51 documents include general mechanical and material-characterization instruments.
Common equipment families: Universal testing machines (with appropriate grips/fixtures), hardness testers (e.g., Shore/IRHD depending on the cited method), conditioning/temperature equipment when required by the document, and sample preparation tools aligned to the referenced specimen geometry.
If you already have the full NF T 51 reference and are comparing frames, load capacities, grips, or automation options, you can request a detailed quote for a configuration matched to your throughput and reporting needs.
How to read this designation or revision
“NFT 51” is often used as a shortened citation. In many cases, the complete reference is written in the form NF T 51-xxx (and may include a Part number such as “-1” and/or an edition year depending on how the requirement is specified).
Revision sensitivity: Setup details and reporting fields can change between editions, so the edition cited in a purchase specification or customer requirement should be treated as controlling.
Related standards, methods, or frameworks (when useful)
NF T 51 documents are frequently used alongside international standards where organizations harmonize methods across regions (for example, ISO or EN methods in the same property area). The correct pairing depends on the specific NF T 51-xxx document and the customer’s compliance language.
When a requirement lists multiple standards (for example an NF T 51 reference plus an ISO/ASTM reference), it’s important to confirm whether the intent is equivalency, alternative compliance routes, or separate tests.
Talk to our team about the exact NF T 51 document and setup
If your documentation only cites “NFT 51” (without the full NF T 51-xxx number and edition), or if you need help translating a requirement into a practical equipment configuration, contact our team with the material type, specimen form, and the property you need to measure.