If you've got a mix of steel scrap and you're not sure whether any of it is stainless, it's worth checking properly — the price difference between the two is significant, and stainless is easy to accidentally undersell as regular steel.
The quick way to tell them apart
The magnet test is your first clue, but it's not conclusive on its own. Most standard steel is strongly magnetic. Many common grades of stainless steel are weakly magnetic or non-magnetic, depending on their exact composition — so a piece that a magnet doesn't stick to (or only weakly attracts) is a strong hint it's stainless, but some stainless grades are magnetic too, so this alone isn't a perfect test.
Visual clues that help:
- Stainless steel typically has a distinctive bright, slightly silvery sheen that doesn't rust or discolour the way regular steel does
- Regular steel, especially older or outdoor-stored pieces, usually shows visible rust or a dull, oxidised surface
- Stainless steel is commonly used in kitchen equipment, medical equipment, catering appliances, sinks, and food-industry machinery — if your scrap comes from one of these sources, there's a good chance it's stainless
Why the price gap exists
Stainless steel contains chromium and often nickel — both significantly more valuable raw materials than the iron that makes up standard steel. That underlying material cost is why stainless consistently commands a considerably higher price per kilo than regular steel scrap, sometimes several times higher depending on current nickel and chromium market prices specifically, not just general steel demand.
Common sources of stainless steel scrap
- Commercial kitchen equipment — worktops, sinks, catering appliances
- Medical and laboratory equipment
- Architectural fittings — handrails, cladding, fixtures
- Food and beverage processing machinery
- Certain automotive and industrial components
Why mixing it into regular steel costs you money
If stainless steel ends up in a general steel/iron load, most buyers will price the entire load at the regular steel rate unless it's specifically flagged and separated — meaning genuinely valuable stainless material gets sold at a fraction of what it's actually worth, simply because it wasn't identified and kept apart.
What to do if you're not sure
If you've got steel scrap and suspect some of it might be stainless but aren't certain, it's worth keeping that portion separate and flagging it clearly when you list it, rather than guessing and mixing it in with the rest. A buyer can confirm the grade on inspection — but only if it hasn't already been mixed into a load priced as standard steel.
List steel and stainless steel separately and get accurate offers on each. Sell on ScrapBays →