Purchasing & Quality / Purchasing guide
A datasheet must be read with its product identity, specimen definition and test conditions. A value describing a fibre, resin, laminate or finished component does not automatically describe the others. Before using a number in a specification, establish exactly what was measured and whether it applies to the proposed construction.
Catalogue reference image. Confirm the quoted configuration against the agreed drawing.
Identify the level of material
Check whether the document concerns reinforcement, resin, prepreg, a cured laminate or a finished product. Record the product reference and revision. Avoid combining a fibre property from one document with a resin or component claim from another and presenting the result as a verified specification.
Read the conditions around the value
Look for the test method, direction, specimen or construction description and stated conditioning. Distinguish typical or indicative information from a guaranteed acceptance requirement. If information needed by your designer is missing, ask the supplier for the applicable documentation rather than filling the gap with a visually similar product’s data.
Use the document in a review
Provide the datasheet to the responsible designer together with the intended application and manufacturing proposal. Record what is accepted as a design input and what still needs verification. Keep the approved material identity under change control so the documentation remains relevant to later orders.
Information to include in your enquiry
| Review item | Information to provide |
|---|---|
| Identity | Exact product and document revision |
| Level | Fibre, resin, laminate or component |
| Conditions | Method, direction and specimen details |
| Use | Design input versus purchase acceptance requirement |
Frequently asked questions
Can fibre strength be advertised as finished-part strength?
Not without the applicable component evidence. The document’s scope must be respected.
Are typical values always acceptance limits?
No. Read the stated status of the data and agree the actual purchase requirements separately.
Discuss your carbon fiber component
Send your drawing revision, intended application, quantity and acceptance requirements to Litian Yunde for a project review.