How to Verify a Metal Powder Supplier

1. The Document Set — Ask Upfront

A genuine producer will send this pack without hesitation. A trader will stall or send someone else's certificates.

• Business license — confirms the legal entity, registration age, and that the company scope includes metal powder production. Cross-check the company name on invoices and bank accounts matches the license.
• Export registration — companies need customs registration to export; ask for their exporter-of-record details.
• ISO 9001 — the baseline for production. For medical-grade powder, ISO 13485; for aerospace, AS9100-class systems matter. Verify the certificate number against the issuer's public register.
• Mill certificates from real deliveries — ask for a redacted MTC from a recent customer shipment, not just a brochure spec sheet.
• SDS and dangerous-goods information — a producer knows their UN classification; a reseller often guesses.

2. Producer or Reseller? Questions That Reveal the Difference

Resellers serve a legitimate purpose — aggregation and logistics — but you should know which one you are talking to, because warranty and traceability differ sharply.

3. The Trial-Order Ladder

Never jump from first contact to a container. The standard ladder:

1. Sample (1-5 kg): pay for it — free samples from unverified suppliers are marketing, not evidence. Test chemistry, PSD, flow and oxygen.
2. Print trial (5-20 kg): one full print campaign on your machines. Check density, mechanicals, and powder reuse behavior (sieving after use, satellite formation).
3. Pilot lot (50-200 kg): batch-to-batch consistency across two or three production lots.
4. Commercial volume: only after the pilot lots pass your internal spec on every parameter.

The whole ladder typically takes 6-12 weeks. Suppliers who push you to skip steps are pricing in your future disappointment.

4. Red Flags That End the Conversation

• 🔴 Prices far below the market band for the grade and cut — powder is a cost-plus business; nobody sells titanium below scrap value.
• 🔴 Payment to a personal account or a third-company account that does not match the business license.
• 🔴 No mill certificate, or certificates that change format between conversations (borrowed templates).
• 🔴 Reluctance to share a plant video, equipment list, or production capacity.
• 🔴 Claiming aerospace or medical certifications that cannot be verified in the issuer's public register.
• 🔴 "We can supply any grade" from a company whose license scope does not include metal powder production.

5. Third-Party Testing — Worth It on Every New Supplier

Independent verification of the first sample lot costs a few hundred dollars and answers the questions certificates cannot:

• Chemistry: ICP-OES full composition against the certified values.
• PSD: laser diffraction across the claimed range — check the tails (D10/D90), not just the mean.
• Oxygen/nitrogen: inert-gas fusion analysis, especially for titanium, aluminum and maraging steel.
• Morphology: SEM check for satellites, elongation and internal porosity — a good proxy for atomization quality.
• Flow & apparent density: Hall flow and tap density against your machine's requirements.

6. What "Verified" Means on PowderSight

Suppliers carrying the Verified badge on the PowderSight supplier directory have completed our onboarding checks — business-license and qualification review — before their listings go live. Verified status is a starting filter, not a substitute for your own sample testing: the trial-order ladder in section 3 still applies to every new relationship. If you are evaluating a supplier not yet listed, submit an inquiry and we can help with the document checks.