Learn / Buying
Both let a buyer post what they need instead of searching listings, and both put the work on sellers to come to you rather than the other way around. They're not the same tool wearing two names, one is a quick general post, the other is a structured request with real budget and timeline fields. Here's the actual difference, and which one actually fits what you need.
A homeowner clearing a workshop who needs "some aluminium, roughly a trailer load" is solving a genuinely different problem than a manufacturer that needs exactly four tonnes of a specific copper grade delivered within three weeks and under a set budget. Forcing both into the same form means either the casual post gets buried under fields it doesn't need, or the structured request loses the precision that actually makes it useful. Two tools, matched to two different kinds of need, solves that better than one tool trying to do both.
If you know exactly what you need, how much you can spend, and by when, RFQ gets you quotes that already account for all three, sellers aren't guessing at your constraints, they're responding to them directly. If you're still figuring out what's realistic, or just want to see who has something roughly matching what you're after, the Wanted Board is the lower-friction way to find out without committing to specific numbers upfront.
Neither replaces the other, and neither replaces bidding on or negotiating a listing that already exists. Both exist for the same underlying situation, you need material and nothing currently listed matches, just at two different levels of formality. See our guide to reverse auctions vs. a single quote for the broader case behind buyer-posted requests generally, and fixed price vs. auction vs. Wanted Board for how these fit alongside the seller-side mechanisms.
A demolition contractor finishing a job has surplus structural steel and no immediate buyer lined up, they don't have a firm budget in mind, they just want to know who's interested and what it's worth. A Wanted Board post, material and rough quantity, takes a couple of minutes and starts bringing in responses without locking in numbers upfront.
A manufacturer restocking a specific copper grade for a production run has none of that flexibility, they need a known quantity, by a known date, at a price that fits an already-approved budget. An RFQ with those three fields filled in gets quotes that are actually usable, a seller offering the wrong quantity or a price above budget has already told them it's not a fit, no back-and-forth needed to find that out.
Genuinely different. The Wanted Board is a lighter, general "post what you're after" tool, no required fields beyond describing the material. RFQ (the RFQ Marketplace) is structured: quantity, budget ceiling, and a need-by date are part of the request itself, closer to how a formal procurement request actually works.
The Wanted Board usually, since it takes less effort to respond to a general post. RFQ responses tend to be more considered since a seller is quoting against your actual budget and timeline, not just expressing interest.
There's no rule against it, but they serve different situations rather than being redundant with each other. If you already know your budget and timeline, RFQ gets you quotes that actually fit them. If you're still figuring out what's realistic, the Wanted Board is the lower-commitment way to find out.
No, they're for when you're the one who needs material and nothing matching is currently listed, not an alternative to bidding on or negotiating an existing listing. See our guide to reverse auctions vs. a single quote for the case for competitive buyer-posted requests generally.
It's built around structured requests, budget, quantity, deadline, which suits a business sourcing decision more naturally than a one-off personal need, but there's no minimum size requirement to use it.
Verified sellers with matching material see it and respond with their own offer or quote. You compare responses and accept the one that works, and from there it moves through the same escrow-protected settlement as any other deal, negotiation, deposit, and delivery confirmation all apply the same way.
Quick post or structured request, both escrow-protected, both find you sellers who actually have what you're after.