How Scrap Metal Prices Reflect Global Commodity Cycles

The Global Price Stack — How Scrap Fits In

Every kilogram of scrap you sell in Singapore sits at the bottom of a long price stack. At the top is the London Metal Exchange (LME) — the global clearing price for copper, aluminium, zinc, lead, nickel and tin. Below that sit regional benchmarks (Shanghai Futures Exchange for China, COMEX for the US), then physical premiums, then grade-specific discounts — and finally the yard-gate scrap price you’re offered.

We break this pricing stack down in detail in how LME pricing flows through to Singapore scrap rates. The short version: scrap prices are derived, not independent. Understanding the top of the stack tells you what’s coming at the bottom.

Historical Commodity Cycles — The Big Waves

Metals move in long cycles, driven by the lag between demand spikes and supply response (opening a new copper mine takes 7-10 years). A few of the defining cycles:

• 1970s supercycle. Driven by post-war industrial rebuild in Japan and Europe, plus oil-shock inflation. Copper peaked in real terms in 1974.
• 2003-2011 China supercycle. The single biggest metals bull run on record. Copper went from ~$1,600/t in 2002 to over $10,000/t by 2011. Steel, aluminium, and iron ore all followed. Driver: Chinese fixed-asset investment and urbanisation.
• 2015-2016 trough. China’s growth slowed, inventories unwound, and copper fell to ~$4,500/t. Scrap prices collapsed alongside.
• 2020-2022 post-Covid surge. Supply-chain shock + stimulus + early EV build-out pushed copper above $10,000/t again and aluminium above $4,000/t.
• 2023-2025 consolidation. Higher rates, China property drag, mixed signals — prices oscillating in wide ranges with periodic EV-driven spikes.

The Demand Drivers Scrap Buyers Watch

• Chinese industrial demand. China consumes roughly half of global copper and aluminium. Chinese PMI, credit impulse, and property starts are leading indicators for scrap demand across Asia.
• US housing and infrastructure. Housing starts drive copper (wiring + plumbing) and aluminium (window frames, siding). Big US bills — CHIPS Act, IRA — show up in metal demand within 12-18 months.
• EV transition. An EV contains ~3x the copper of an internal combustion car. Battery demand drives nickel, cobalt and lithium. Grid build-out drives copper and aluminium for transmission cables. This is a structural, multi-decade driver.
• Construction steel demand. Regional construction pipelines (Southeast Asia, India) feed EAF mills, which feed scrap demand.

Inventory Cycles — The Short-Term Signal

Exchange warehouse stocks matter enormously for short-term pricing. When LME copper stocks fall toward multi-year lows, buyers panic and prices squeeze upward. When stocks pile up (often a lagging sign of weak demand), prices grind lower.

Singapore is itself an LME-approved warehousing hub, so local stock levels are part of the signal. Our LME guide walks through how to read these stocks.

How Scrap Buyers Read the Signals

A professional scrap buyer — not a karung guni operator — is essentially a trader. They look at the same dashboards you’d see on a commodities desk:

• LME 3-month price and forward curve. A backwardated curve (spot higher than forward) = tight physical market = firm scrap prices.
• LME + Shanghai stocks. Falling stocks = bullish. Rising = bearish.
• Physical premiums. The premium over LME for actual metal in a specific location. Rising physical premiums in Asia = strong regional demand.
• Platts/TSI ferrous benchmarks. Turkey HMS, Taiwan containerised scrap, Indian bulk — these indices set the tone for ferrous scrap prices across Asia.
• Chinese PMI + property indicators. Leading indicators for downstream demand.
• USD/CNY. A weaker yuan makes dollar-priced imports more expensive for Chinese buyers — typically scrap-negative.

Patient-Seller Strategy — Using Cycles, Not Fighting Them

If you’re sitting on a meaningful volume of scrap (a commercial site, a demolition project, a manufacturing changeover), you don’t need to sell on the worst day of the month. Our practical framework is in when to sell scrap metal — LME timing. In summary:

1. Don’t sell into a visible collapse. If copper is breaking multi-month support on rising inventories, waiting days or weeks often recovers 5-10%.
2. Sell into strength, not peaks. Catching exact tops is impossible. Selling into the upper third of a 3-6 month range is realistic and usually 10-25% better than selling into the bottom third.
3. Stagger large volumes. For significant tonnages, split into 2-3 shipments across weeks to average out.
4. Lock in when backwardation spikes. Sudden tightness often resolves downward once physical flows re-balance.

The Macro View for Singapore Sellers

Singapore scrap prices follow the global cycle closely because the regional buyers (mills in Malaysia, Vietnam, Thailand, India, occasionally Taiwan) are themselves price-takers from global benchmarks. There’s very little domestic pricing power. That’s why understanding LME, Platts and Chinese demand matters even for a small-scale seller — you’re plugged into the same global clock as the majors.

For current Singapore-specific rates and how they translate into yard-gate pricing, see our Singapore scrap price reference.

The EV Transition — A Structural Demand Shift

Every step of the EV value chain pulls on different metals. A rough guide to what EVs are doing to scrap demand:

• Copper: ~60-80 kg per EV vs ~20 kg per ICE car. Plus huge volumes needed for grid build-out and charging infrastructure. Strongly bullish for copper scrap over the decade.
• Aluminium: EVs tend to be heavier, so aluminium usage rises to offset weight. Modestly bullish.
• Nickel, cobalt, lithium: Battery-driven. Primary demand is enormous; battery recycling is a developing market.
• Platinum-group metals (catalytic converters): Long-term headwind as ICE fleet shrinks, but the existing ICE stock still has 15-20 years of end-of-life flow — see catalytic converter scrap.

Reading the Cycle — A Practical Dashboard

If you track just five indicators, you capture most of the actionable signal:

• LME copper price + 3-month forward curve.
• LME copper + aluminium warehouse stocks (direction more than absolute level).
• China’s manufacturing PMI (monthly).
• Turkey HMS scrap index (global ferrous bellwether).
• USD/CNY and broader dollar index.

You don’t need to be a trader. You need to notice direction — whether the wind is at your back or against you — before committing a big sale.

Related Reading

• LME & Singapore scrap — the complete guide
• LME pricing explained for Singapore
• When to sell scrap metal — LME timing
• Scrap metal prices in Singapore
• Scrap metal glossary