Does brass read like gold on a metal detector?

It can land in an overlapping range depending on the detector and the object, which is part of why brass and gold are easy to confuse. Brass usually conducts better than gold, so it tends to read somewhat higher, but you still have to dig to be sure.

Can a metal detector tell brass from copper?

Not reliably. Brass, bronze and copper sit close together on the target ID scale, so the detector tells you it's a good conductor, not which copper alloy it is.

Does corrosion or green patina affect detection?

Very little. Patina is a thin surface layer; the solid metal beneath is still conductive, so corroded bronze detects almost as well as clean metal.

Is brass worth digging?

Usually, yes. Brass finds like casings, buckles and buttons are common and often historically interesting, and a mid-high signal can also be a copper coin.

Answer · Updated October 28, 2026

Can a Metal Detector Detect Brass or Bronze?

Short answer

Yes — brass and bronze are both copper-based alloys and conduct electricity well, so a metal detector finds them reliably and at good depth. They sit mid-to-high on the target ID scale, below silver but well above iron, and show up all the time as shell casings, buttons, and old coins.

Can a metal detector detect brass or bronze? Yes, and better than most of what you'll dig. Both are built on copper, one of the best conductors you'll meet in the field, so they return a strong, clear signal.

The useful question is what a brass or bronze signal usually means once you've dug it.

01Why brass and bronze detect so well

A detector responds to conductivity — see how a metal detector works. Brass is copper alloyed with zinc, and bronze is copper alloyed with tin. Alloying lowers conductivity a little compared with pure copper, but both stay firmly in the good-conductor range, which is why they read cleanly and reach real depth.

02Where they sit on the target ID scale

Expect brass and bronze to read mid-to-high — above iron, foil and gold, below silver. The exact number shifts with the alloy mix, the object's size and shape, and your detector, so treat the range as a guide rather than a fingerprint. Our target ID chart shows the general bands.

That overlap with copper coins is why a clean mid-high signal is worth digging even when you can't be sure what's under it.

03What you'll actually find

Brass turns up as shotgun and rifle casings, buckles, keys, plumbing fittings and decorative hardware. Bronze shows up as old coins, buttons, medals and statuary fragments. On a historic site, both are everyday finds — see our relic hunting detector guide for machines suited to that ground.

Heavily corroded bronze, with its green patina, still detects fine. The metal underneath keeps conducting, and the patina is only a surface layer.

Keep reading

Detectors worth a look

Garrett AT Pro review
Relic hunting, freshwater, and anyone who wants to learn to read targets by audio rather than by number.
Minelab Equinox 800 review
One detector to cover coins, jewelry, beach, and the occasional gold hunt — without compromising on any of them.
Nokta Simplex+ review
Beginners and second-machine buyers who want waterproof capability — creeks, lakes, rain, and freshwater swim beaches.

Buying guides

Best Pinpointers for Metal Detecting
The best pinpointer for metal detecting is the Garrett Pro-Pointer AT — waterproof, adjustable, and hard to lose. Probes compared for dirt, water, and gold.
Best Pinpointer Metal Detector for Gold
The best pinpointer for gold is the Falcon MD20 — a very high frequency probe that finds flakes in quartz standard pinpointers miss. Gold probes compared.
Best Metal Detector for Kids
The best metal detector for kids is the Nokta Mini Hoard — light enough for a small child and capable enough to find real coins. Picks by age, from 5 to teenager.