← Back to Blog · 2026-10-04 · 7 min read · Product Education

It's 9:00 a.m. in Shanghai. Rebar is up, iron ore is flat, and hot-rolled coil — the contract most Western traders have never touched — is quietly making a move that has nothing to do with construction. If you've ever looked at the Chinese steel complex and thought "they're all basically the same trade," this article is going to save you from an expensive lesson. They are not the same trade. They sit at different points of the supply chain, respond to different demand drivers, and occasionally diverge hard enough to create some of the most interesting spread trades in Chinese commodity futures.

Let's break down what HRC futures actually are, how they differ from rebar and iron ore, and how a practical trader can use all three together.

What Is Hot-Rolled Coil, Physically?

Hot-rolled coil is steel rolled into wide, flat strips at high temperature. Think of it as the workhorse of manufacturing steel: car bodies, home appliances, ship panels, pipelines, machinery, steel structures. If rebar is the steel of construction sites, HRC is the steel of factories.

This distinction matters enormously for trading. Rebar demand tracks real estate and infrastructure — cranes, foundations, residential towers. HRC demand tracks manufacturing activity — auto production, appliance exports, capital equipment orders. Two different economies, two different demand curves, wrapped in two different futures contracts on the same exchange.

The Contract Specs That Actually Matter

HRC futures trade on the Shanghai Futures Exchange (SHFE) — the same home as rebar. Here's the practical spec sheet:

• Exchange: Shanghai Futures Exchange (SHFE)
• Contract size: 10 metric tonnes per lot
• Quote unit: Chinese yuan per tonne
• Minimum tick: 1 yuan per tonne — so one tick moves your P&L by 10 yuan per lot
• Trading hours: Day session plus a night session running until roughly 11:00 p.m. Beijing time, which partially overlaps European morning trading
• Contract months: Monthly listings out several months, with the front months carrying most of the liquidity

For comparison, rebar on SHFE is nearly identical in structure — also 10 tonnes per lot, also a 1 yuan/tonne tick, also a night session. Iron ore, however, trades on the Dalian Commodity Exchange (DCE) with a much larger contract: 100 tonnes per lot and a 0.5 yuan/tonne tick. That means one iron ore tick is worth 50 yuan per lot — five times the per-tick exposure of a single HRC or rebar contract. If you're sizing positions across the complex, this is the first thing to internalize: iron ore lots are not interchangeable with steel lots.

Margins and tick values shift with exchange policy, so always check current SHFE and DCE circulars before sizing. Chinese exchanges actively adjust margin levels and trading limits during volatile periods — this is a feature of trading Chinese commodity futures, not a bug.

Three Contracts, Three Different Beasts

Here's the mental model I use: iron ore is the input, HRC and rebar are the outputs.

Iron Ore: The Raw Material Trade

Iron ore futures track the cost side of steelmaking. China imports the majority of the world's seaborne iron ore, largely from Australia and Brazil, so the contract is sensitive to global supply events — a Brazilian mine disruption, an Australian cyclone season, changes in Chinese port inventories. It's the most internationally connected of the three contracts and often reacts to things happening far outside China's borders.

Rebar: The Construction Trade

Rebar is the purest expression of Chinese construction activity. When property developers are building and infrastructure stimulus is flowing, rebar demand surges. When the property sector contracts — as it has in recent years — rebar feels it first and hardest. Seasonality is real here too: construction slows around Chinese New Year and picks up in spring and autumn.

HRC: The Manufacturing Trade

HRC answers to a different master. Auto production schedules, appliance manufacturing, export orders, machinery investment — that's what drives coil. It tends to hold up better than rebar when construction is weak but manufacturing is healthy, and it tends to underperform rebar when stimulus is construction-heavy.

One steel mill, one blast furnace, two very different customers. That's the entire reason the HRC-rebar spread exists.

The Spread Logic: Where the Real Edge Lives

Most experienced traders in the Chinese steel complex don't trade these contracts in isolation — they trade the relationships between them.

The Coil-Rebar Spread

The HRC-rebar spread is essentially a bet on manufacturing versus construction. When you buy coil and sell rebar, you're long the factory economy and short the construction economy. This spread has gone through dramatic, publicly visible phases: during the property boom years, rebar at times traded at a premium to HRC — a reversal of the historical norm, since coil typically carries a processing premium. When that relationship stretched to historically unusual levels around the 2021 steel rally and the subsequent property downturn, it created conditions that spread traders watch for: mean-reversion setups anchored in a genuine physical logic.

The beauty of this spread is that it strips out much of the shared risk. Both legs are steel, both face the same production costs, so you're left trading the demand differential — a much cleaner thesis than outright directional bets.

The Steel Margin Trade: Ore vs. Steel Products

Buy HRC or rebar, sell iron ore, and you're trading steelmaking margins. If mills are profitable and running at high utilization, steel output rises, ore demand rises, and the ratio between them reflects mill economics. If ore rallies faster than steel — perhaps on a supply disruption — margins compress, and the market often eventually prices that pressure back into steel prices or mill production cuts. Chinese government capacity policy and environmental production restrictions add another layer here, and they tend to hit the products and the input differently.

Directional Trades with a Confirmation Filter

If you trade outright direction, the trio gives you a built-in confirmation tool. Steel products rallying while iron ore lags suggests demand-driven strength. Everything rallying together often means cost-push or broad liquidity-driven moves. Iron ore moving alone usually points to a supply story. Reading which contract is leading tells you what kind of trade you're actually in.

A Word on Volatility: Learn from 2021

Anyone trading Chinese commodity futures should study what happened across the complex in 2021. Driven by post-pandemic demand, supply constraints, and speculative flows, steel and coal prices climbed to levels well above historical norms by spring — thermal coal's rally that year became one of the most dramatic commodity moves of the decade. Then Chinese authorities intervened decisively: policy statements, margin hikes, trading limit reductions. Prices corrected sharply within weeks.

The lesson isn't "don't trade Chinese commodities." The lesson is that policy is a first-class market participant in China. Exchanges can and do raise margins, cap position sizes, and adjust fees mid-trend. If your risk model assumes only organic volatility, it's incomplete for this market. Build position sizing that survives a sudden margin hike and a gap against you on the night session.

Practical Rules for Trading the Complex

Let me distill this into rules you can actually use:

• Know your tick exposure cold. 10 yuan per tick for HRC and rebar, 50 yuan per tick for iron ore. Size accordingly — iron ore lots deserve smaller position counts.
• Respect the night session. Chinese steel contracts trade into the late evening Beijing time, overlapping Europe. Global risk sentiment can move these markets while your day-session charts are quiet.
• Trade the spread when the macro story is ambiguous. If you can't tell whether steel is bullish, the coil-rebar spread lets you express a relative view with less directional risk.
• Watch port inventories and mill margins. Iron ore port stock levels and estimated steel mill profitability are the two data streams that most consistently inform the complex's structure.
• Track policy, not just price. Exchange circulars, production restriction announcements, and property-sector policy shifts move these markets as much as any technical setup.
• Don't assume the three contracts correlate perfectly. In stress periods correlations converge; in normal periods they diverge on demand differences. Your stop placement should reflect which regime you're in.

Why This Matters for Evaluation Traders

If you're coming from Western futures — ES, crude, gold — the Chinese steel complex offers something genuinely different: deep liquidity, night-session access, and a supply chain you can trade end-to-end. But it also punishes traders who treat HRC, rebar, and iron ore as interchangeable. The traders who do well here are the ones who understand the physical chain — ore into steel, steel into construction or manufacturing — and build rules around it.

And like any market, you shouldn't risk real capital on a thesis you haven't tested. If you want to validate your steel-complex strategy against real Chinese market data, that's exactly what we built XS Select for. It's a China futures evaluation platform where you can run your system under structured risk rules — evaluations start from $29 — and see whether your edge survives contact with the Shanghai and Dalian order books before you ever fund a live account. No pressure either way; the market will tell you the truth eventually. Better it tells you in an evaluation than on a live margin call.

The Chinese steel complex rewards traders who do the homework. Now you know the difference between the coil, the rebar, and the rock — that's the homework done.