Scrap basics: what counts, how it flows, who buys it
Page brief. Target keyword:
scrap basics. Audience: first-time scrappers and curious sellers who don't yet have a vocabulary for the trade. Funnel stage: awareness. The page should answer: what is scrap, how does it become money, and where do I actually fit in that chain?
This category covers the foundation: a working definition of scrap, the ferrous-vs-non-ferrous split that drives every grade ladder, and the supply chain that connects a curbside appliance to a steel mill in Indiana. Read this before the Grades, Equipment, or Yards categories — the rest of the silo assumes you already know the words.
What "scrap" actually means
Plenty of metal isn't scrap. A reusable copper fitting is a part. A rusted-through pipe with no resale is scrap. The line between the two is whether the next economic step is remelt (scrap) or reuse (parts). Sub-topics this section will cover:
- The remelt-vs-reuse split and why it changes the price ceiling
- Ferrous (iron-bearing) vs. non-ferrous — and the magnet test that separates them
- The "obtainable" vs. "prompt" vs. "home" scrap categories used inside the industry
- Why mixed-metal assemblies (motors, transformers, ballasts) get their own pricing logic
How scrap flows from source to mill
| Stage | Who handles it | What happens |
|---|---|---|
| Source | Sellers, contractors, demolition crews | Material leaves its original use |
| Yard | Independent or chain scrap yard | Sorted, graded, weighed, paid |
| Processor | Regional shredder or shear | Sized for furnace charge |
| Mill | EAF or BOF mill | Remelted into new product |
| Mill customer | Fabricators, automakers, builders | Buys the new ingot or coil |
Yards take a margin between what they pay you and what the processor pays them. The Scrap Yards category explains how that margin is calculated and where you have leverage.
What sellers most often get wrong
- Treating scrap like trash — a load tossed into the bed is downgraded by mixing
- Skipping the magnet test — stainless gets sold as carbon steel and pays a fraction of its real value
- Not asking which yard sorts vs. shreds — sorting yards typically pay better for clean grades
- Not stripping copper wire — bare-bright copper can pay 50–100% more than insulated, and the labor is straightforward (covered in Copper & Wire)
- Showing up at 4:55 PM — most yards stop accepting drops 30 minutes before close
Topic ideas / outline
A writer expanding this hub should produce pages on:
- "What is scrap metal?" — definitional, with the magnet/colour/density quick tests
- Ferrous vs. non-ferrous — the single most leveraged distinction in the trade
- The scrap supply chain end-to-end (overlaps with the Recycling Guide / Metal Recycling category — the recycling side covers the post-yard half)
- "Is this scrap?" — a flowchart for the gray-area items
- Metals you should never put in a scrap bin (lithium batteries, mercury switches, refrigerant tanks)
- The economics of small-volume vs. large-volume scrapping
Frequently asked questions
What's the most valuable scrap metal?
Per pound, copper — especially bare-bright copper. Per load, catalytic converters can dwarf everything else, but they're tightly regulated. See Copper & Wire for the copper grade ladder.
Do I need an ID to sell scrap?
Most US states require a driver's license, and many require a thumbprint for non-ferrous over a certain dollar amount. The full state-by-state breakdown will live in the Industry / Regulation category.
What's the difference between scrap and recycling?
Scrap is the material; recycling is the process. The Recycling Guide covers the process side end-to-end.
Related guides
- Scrap for Metal: A Beginner's Guide — the existing leaf in this category
- Scrap Grades — once you know the categories, learn the ladders
- Scrap Yards — how the buy side actually works
- Metal Recycling — the post-yard half of the chain
- Copper Price — live pricing context for the metal that pays best