Net content
State kilograms, metric tons, drums or bags. Sample, trial lot, recurring forecast and firm order are different quantity types and should not be mixed on one line.
Quote console
FamilyPolymers & Resins
ConfirmGrade · form · viscosity or melt flow
PackDrums, bags, IBCs or buyer-named pack
ShipUS destination + requested timing
FilesSDS, TDS, CoA for the quoted SKU
- 12 identity checks we try to freeze on a composite RFQ
- 9 pack and transport questions before a unit price is compared
- 19 process-spec fields mills must restate or mark open
- 16 SDS, TDS and CoA questions bound to the quoted SKU
- 14 landed-cost lines kept visible instead of a hidden kilogram figure
Independent sourcing partner
Source composite materials with one controlled factory RFQ
Composite Materials Sourcing helps US distributors, formulators and industrial buyers freeze grade, CAS number where known, quantity, pack type and destination before any mill is ranked. We coordinate factory outreach and wholesale quotation comparison. We are not a manufacturer or authorized distributor, and we do not stock drums.
Packaging and transport parameters
Name the pack before comparing a unit price
Composite quotes diverge when one mill prices a 25 kg bag, another a 200 L drum, and a third an IBC with different net content. Record net weight, inner liner, palletization, labeling language and any UN number the supplier assigns to the exact concentration. Handling, storage and carriage follow the product SDS, carrier rules and applicable regulations; this page is not an operating instruction.
Package material
Ask whether the quoted pack is steel, HDPE, foil bag, fiber drum or another named construction, and whether a moisture barrier is required for the grade.
Label and lot
Request lot number format, manufacture date, shelf-life statement and storage temperature range on the same document set as the CoA.
Transport class
DOT or IMDG classification belongs to the quoted product. A family SDS from a related epoxy or vinyl ester is not evidence for the lot on the quotation.
Application and specification matrix
Process intent changes which fields must be frozen
Use the matrix to turn a production context into RFQ questions. It does not certify that a resin, prepreg, honeycomb core or fiber form is suitable for the process. Laboratory, EHS and regulatory decisions remain with qualified parties after exact-product documents arrive.
Infusion or RTM
Record viscosity, gel time, Tg target and mix ratio if two-part. Request TDS, SDS and CoA format. Cure window and pot life at plant temperature stay open until the mill restates them.
Prepreg layup
Record resin content, tack, out-time and storage range. Request TDS, SDS and a freezer-life statement. Roll width, liner type and remaining out-time stay open until quoted.
Thermoplastic compounding
Record melt flow, density, moisture and color. Request TDS, SDS and CoA. Pellet size and residual monomer, if relevant, stay open until the mill answers.
Adhesive bonding
Record grade, color, solids content and packaging. Request SDS, TDS and CoA. Open time and substrate notes from the buyer stay outside the quotation until written.
SDS, TDS and CoA questions
Which documents still need a supplier answer?
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01
Can a family SDS replace the quoted grade?
No. A safety data sheet, technical data sheet and certificate-of-analysis format must match the proposed product, concentration and manufacturer. Related epoxy, polyurethane or carbon-fiber family literature is a question set, not evidence.
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02
What must the quotation confirm about grade and form?
Ask the mill to restate grade, form, viscosity or melt flow, color, assay or purity where applicable, packaging net content, currency, Incoterm and exclusions. Alternative grades belong on a separate line with buyer approval.
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03
Are TSCA, REACH or ISO statements this site's credentials?
They are verification questions to the proposed supplier. Composite Materials Sourcing does not borrow competitor certificates or publish them as our own.
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04
When can unit prices be compared?
After product basis, quantity, package contents, currency, Incoterm, freight scope and exclusions line up. No savings percentage is published; compare total procurement cost only on that aligned basis.
Sample and document note
Define what a sample is supposed to prove
A sample may confirm identity, appearance, assay, viscosity, moisture, processing behavior or packaging. Record the method, reviewer and pass/fail rule outside the quotation. Requesting a sample does not mean we hold inventory or can ship hazardous goods from this website.
After contact, buyers may send drawings or additional SDS questions by the same channel. We then review product, quantity, destination and sourcing requirements before any eligibility for FREE sourcing support or an eligible benefit of up to 3% is confirmed.