How to read the LME — and what it actually means for your scrap load

If you’ve ever wondered why a scrap yard’s copper rate moved overnight without anyone in Australia doing anything, the answer is almost always the London Metal Exchange. The LME is the global reference market for industrial metals, and its daily settlement prices ripple through to what your local yard can pay — usually within a day or two. Understanding how that connection works puts you in a far stronger position the next time you weigh in a load.

What the LME is

The London Metal Exchange has set benchmark prices for industrial metals since 1877. It’s where the world’s producers, manufacturers, and traders agree on what a tonne of copper, aluminium, zinc, nickel, lead, or tin is worth. When a Chilean copper mine sells to a Chinese cable maker, the price they settle on is anchored to the LME. When a German car plant buys aluminium, same story. The exchange handles enormous volumes, and the prices it produces are treated as the global truth for what these metals cost on any given day.

Five of the eight metals we track on this site trade directly on the LME: copper, aluminium, zinc, nickel, and lead. The other three are derived. Brass is an alloy of roughly two-thirds copper and one-third zinc, so it tracks those two. Stainless steel takes most of its value from its nickel content. And scrap steel, while not a single LME contract, follows global ferrous markets closely enough to move with a reference rate.

Spot price versus what you get paid

Here’s the part that trips most people up. The LME price — often called the “spot price” — is the value of refined, pure metal traded in tonne-scale contracts. It is not what you get paid for a bag of mixed copper offcuts.

The number on your weighbridge receipt is the spot price minus a series of deductions, all of which reflect the real cost of turning your scrap back into usable metal:

• The payout rate. Yards pay a percentage of spot, not the full figure. For clean, high-grade copper this might be 75–85% of LME spot; for contaminated or low-grade material, far less. The gap covers the yard’s processing, sorting, transport, and margin.
• The grade. A kilogram of bare bright copper and a kilogram of insulated copper wire are both “copper,” but they pay very differently because one needs stripping and refining and the other doesn’t.
• The regional adjustment. Where you are in Australia matters, because the metal has to travel to a smelter or export port. More on this below.

So when LME copper sits at, say, AUD $17.50 per kilogram, a yard might pay you around $13.50 for clean bare bright — and considerably less for anything dirtier. That isn’t the yard ripping you off; it’s the structure of the entire metals supply chain showing up on your receipt. Our methodology page breaks down exactly how we model each step.

Why the price moves

LME prices move for reasons that have nothing to do with Australia. Chinese construction demand, supply disruptions at major mines, currency shifts, interest-rate decisions, and global manufacturing cycles all push the numbers around daily. Copper in particular is treated as a barometer for the world economy — it’s used in everything from housing to electronics to EVs — which is why traders watch it so closely and why it can be volatile.

For a scrap seller, the practical takeaway is simple: prices are not fixed, and they are not local. If copper has had a strong week on global markets, that’s the week to clear your accumulated wire and tube. If it’s slumped, and your load isn’t going anywhere, waiting a fortnight can occasionally be worth real money on a large quantity.

The Australian-dollar wrinkle

The LME quotes in US dollars per tonne. Australian yards pay in Australian dollars per kilogram. That means the exchange rate sits between the global price and your pocket. A copper price that’s flat in US dollars can still rise or fall in Australian-dollar terms purely because the AUD/USD rate moved. When the Australian dollar weakens against the greenback, scrap prices in AUD tend to rise even if the underlying metal hasn’t budged — because each US-dollar-denominated tonne now converts to more Australian dollars. It’s an easy factor to forget, but on a volatile currency week it can be the main thing moving your local rate.

How to use this

You don’t need to watch the LME daily — that’s what this site does for you. The prices on each metal page are anchored to the latest available LME close, converted to Australian dollars, and adjusted for grade and region. Refresh happens every weekday morning.

What’s worth doing is checking the price for your specific metal and city before you call a yard, so you walk in with a realistic expectation. If a yard quotes you dramatically below the estimate on our calculator, that’s a signal to ring a competitor. If they’re in the ballpark, you know you’re getting a fair deal anchored to the same global benchmark the entire industry uses.

The LME can feel remote — a 150-year-old exchange on the other side of the world. But every cent it moves eventually lands on an Australian weighbridge, and knowing that is the difference between guessing at your load’s value and understanding it.