Metals in AI infra: origins, S&D, refining & costs | 2026 deep dive

Key metrics (Aug 2026)

LME copper ($/t)

USD 10K

Cu share of AI DC CapEx (~)

0.04

Global AI DC CapEx (2026E)

USD 2.2K

Metals share of CapEx (~)

0.09

As-of 2026-09-25 (weekly refresh; equities aligned to §A. Missing series are N/A/null. Not investment advice.)

Industry deep dive · data as of 2026-08-26. Metal intensity, cost shares, and scarcity scores are illustrative reconstructions from public sources—not audited BOMs. Regional balances cite ICSG-style frameworks with noted disagreements. Not investment advice.

Thesis

AI infrastructure CapEx is entering the GW-scale campus + 100kW rack era (AI infra deep dive). Metal demand shifts from “buying GPUs” to powering and connecting silicon. Copper is the pricing anchor: campus cabling, busbars, and transformers dominate metal CapEx; aluminum shares high-voltage lines and structure; tin is the high-beta solder metal for AI hardware. ICSG global refined surplus can coexist with US stockpiling—do not map “book surplus” directly to “copper must fall” (copper S&D deep dive).

Portfolio map: upstream Zijin / CMOC; power chain VRT / Eaton; compute NVDA → metals are the physical constraint layer on CapEx.

Framework: AI infra × metals

Mines (Chile / DRC / Indonesia…)
  → Smelting & refining (China ~50%+)
  → Power & civil works (Cu/Al ~70% of metal tonnage)
  → Servers / networking (Sn/Cu/Au BOM)
  → Storage (Li/Ni/Co, optional)
  → Cluster operations (ongoing Cu/Al maintenance)

Three layers:

1. Power (largest): hyperscaler CapEx → grid/campus → copper & aluminum
2. Hardware (high beta): AI server shipments → tin solder + PCB copper
3. Indirect (optional): campus storage → lithium / nickel / cobalt

Sector context: nonferrous metals H2 2026.

Origins & sources

Global copper mine output concentrates in Chile, Peru, and the DRC; aluminum starts as bauxite (Guinea/Australia) with smelting capped by China power policy. Tin is sensitive to Myanmar/Indonesia disruptions; cobalt is ~72% mine supply from the DRC.

铜矿产量：主要来源国占比

Interactive chart available in the reader.

Metal matrix (origin / refining / AI link / scarcity):

分金属一览：产地·冶炼·AI·稀缺性

分金属一览：产地·冶炼·AI·稀缺性

metal	origin	refining	demand_trend	ai_link	scarcity
铜 Cu	智利/秘鲁/刚果(金)/蒙古	中国精炼 ~57%；智利/日本/韩国	2026 ICSG 精炼 +1.6%；AI+电网双驱动	园区电缆/母线/变压器/机柜配电	6.8/10
铝 Al	中国/澳大利亚/几内亚(铝土矿)	中国电解铝 ~59% 全球	产能天花板；光伏+线缆	架空线/散热/机架/铝代铜	4.0/10
锡 Sn	中国/印尼/缅甸/秘鲁	中国冶炼 ~50%+	低库存；AI PCB 焊料	PCB/封装焊料/连接器	8.2/10
镍 Ni	印尼/菲律宾/俄罗斯	印尼 NPI/中国精炼	纯镍库存压制；电池+不锈钢	UPS/储能电池；不锈钢设备	5.2/10
钴 Co	刚果(金) ~72%	中国/芬兰	刚果配额；供给收缩	储能/备用电源（间接）	7.5/10
锂 Li	澳大利亚/智利/阿根廷/中国	中国碳酸锂/氢氧化锂 ~65%	过剩→紧平衡；储能上修	园区储能/UPS	5.5/10
银 Ag	墨西哥/秘鲁/中国(副产)	冶炼副产	光伏+工业触点	电力触点/光伏（园区）	4.5/10
金 Au	中国/澳大利亚/俄罗斯	瑞士/中国精炼	货币属性主导	芯片键合/高端连接器	3.0/10

Global supply–demand trends

Track AI-linked metal demand with an AI metal intensity index: 2020 = 100, 2026E ~205 (+105% vs 2020), driven by data-center CapEx and grid build-outs (composite of Cu wiring + Al + Sn intensity—illustrative).

AI 金属强度指数（2020=100）

Interactive chart available in the reader.

2026 balance snapshot:

2026 供需平衡（摘录）

2026 供需平衡（摘录）

metal	supply_26	demand_26	balance	ai_share
铜	精炼 +0.4% (ICSG)	消费 +1.6%	全球过剩 ~96kt；美国外紧	AI+DC wiring ~4% 增量贡献
铝	中国接近产能顶	新能源+出口	低库存	DC 结构/散热 ~2%
锡	缅甸/印尼扰动	半导体焊料 +6% est.	显性库存低位	AI 服务器 PCB ~15% 焊料增量
镍	印尼 RKAB	不锈钢+电池	纯镍累库	间接（储能）
钴	刚果配额 -15% est.	电池稳定	偏紧	间接
锂	澳/非矿放量	储能 +25% est.	再平衡	园区储能

• Copper: ICSG 2026 refined surplus ~96 kt, but US import stockpiling keeps ex-US spot tight (LME ~$10,180/t, Aug 2026).
• Tin: AI server PCB solder demand; low visible stocks → higher price elasticity than copper.
• Aluminum: China capacity ceiling + solar/exports → mid ~$3,300/t wide range.

Refining & processing geography

Refined/smelted capacity is China-centric: copper refining ~57%, aluminum ~59%, lithium chemicals ~65%, cobalt refining ~72%. AI metal bottlenecks often pair mine shocks (Chile/DRC/Myanmar) with China smelter runs, power, and environmental policy.

全球精炼产出：区域占比（多金属加权）

Interactive chart available in the reader.

冶炼产能区域分布

冶炼产能区域分布

metal	china	other_asia	americas	europe	note
铜	~57%	~18%	~12%	~8%	中国冶炼占全球精炼主导
铝	~59%	~8%	~8%	~12%	电力成本决定冶炼布局
锡	~52%	~28%	~5%	~8%	缅甸供给扰动敏感
镍	~35%	~42%	~8%	~6%	印尼 NPI→中国
钴	~72%	~5%	~8%	~12%	刚果矿→中国精炼
锂	~65%	~8%	~15%	~5%	中国化工冶炼主导

Cost angle: high China share → export controls, power tariffs, and environmental curbs spill into LME/SHFE spreads; AI campuses in the US/EU often see metal + power-equipment lead times move together.

Costs: spot, cash cost & AI sensitivity

现货 vs 90 分位现金成本（示意）

Interactive chart available in the reader.

Copper C1 curve still below spot → mine incentives intact; greenfield scarcity keeps long-run supply inelastic (copper note §supply).

Downstream chain & key parts

AI metal downstream mix (by tonnage):

1. Campus/grid electrical (55–70%) — Cu/Al cable, transformers, switchgear
2. Racks / liquid cooling (15–25%) — copper cold plates, CDU, busway
3. Server/network BOM (8–15%) — tin solder, PCB copper, gold bonding
4. Storage/UPS (5–10%) — Li/Ni/Co (architecture-dependent)

下游：AI 层级 × 金属 × 产品

下游：AI 层级 × 金属 × 产品

layer	metal	product	ai_role	cost_note
园区电力	铜/铝	中压电缆、母线槽、变压器绕组	GW 级 AI 园区最大金属单点	占金属 CapEx ~65%
机柜配电	铜	PDU、Busway、铜排	高功率密度机柜	~$80–120k/MW
液冷	铜/铝	冷板、CDU 换热器	GPU 持续利用率前提	见 VRT
服务器	锡/铜/金	PCB 焊料、背板、键合线	每机柜 BOM 金属 ~$2–5k	锡弹性最大
网络	铜/金	DAC/背板/光模块壳体	Scale-out 集群	见 ANET
储能	锂/镍/钴	LFP/NMC 电池系统	UPS/调峰（可选）	占金属 CapEx ~8%

Compute cross-links: NVDA CapEx → VRT power/cooling → Cu/Al orders; CLS / ANET shipments → tin/PCB copper.

Scarcity & supply risk

Scarcity index (1–10: concentration + inventories + policy + project pipeline):

AI 供给风险指数（1–10）

Interactive chart available in the reader.

Metal cost share in AI CapEx

For a 1 GW AI data center with all-in CapEx ~$18–22B (GPUs, network, civil, power—2026 illustrative), metals are 8.5% ($1.5–1.9B); copper alone ~5.2%.

金属占 AI 数据中心 CapEx 比重

Interactive chart available in the reader.

How to read it:

• Metals are a small slice of total CapEx (GPUs still 55%+), but they gate civil/power schedules—a +20% copper move adds ~+1 ppt to total CapEx but can hit power EPC margins by 300–500 bps.
• Tin is ~0.12% of CapEx yet 15–25% of per-server metal BOM → ODM margins feel supply shocks first.

Equity map

金属—权益映射

金属—权益映射

metal	upstream	midstream	downstream
铜	紫金 · 洛钼 · FCX	江铜	VRT · ETN
铝	中国铝业	云铝/电解铝	电力设备 OEM
锡	锡业股份/MSC	冶炼	PCB/ODM CLS
锂/钴	华友	正极	储能 EPC

Outlook

H2 2026–2027: if hyperscaler CapEx holds (GOOGL ~$205B, MSFT ~$175B order of magnitude), Cu/Al “new mid-cycle” narrative persists; tin/cobalt hinge on policy and stocks. Risks: China property/industrial demand, US copper tariffs, DRC/Myanmar supply shocks.

Tracking

1. LME/COMEX copper spread and US inventory rebalancing (copper brief)
2. China grid/UHV tenders and DC campus approvals
3. Myanmar/Indonesia tin exports and LME tin stocks
4. DRC cobalt quota execution; Huayou/CMOC shipments (Huayou)
5. Hyperscaler CapEx guides vs power-equipment backlog (VRT/ETN)

Confirm: firm Cu/Al spot + lower smelting TC/RCs + rising power EPC revenue.
Disconfirm: ICSG surplus realized + US inventory release + CapEx cuts.

Risks

References

1. On-site — nonferrous H2 2026 · copper S&D · AI infra utilization
2. ICSG balance summary — https://www.scrapmonster.com/news/copper/icsg-forecasts-global-copper-surplus-through-2027-2026-6-30/99457
3. LME Copper — https://www.lme.com/Metals/Non-ferrous/LME-Copper
4. Bloomberg copper ~$14k (Aug 2026) — https://www.bloomberg.com/news/articles/2026-08-04/copper-marches-closer-to-14-000-as-flows-to-us-tighten-market
5. IEA critical minerals framework — https://www.iea.org/reports/the-role-of-critical-minerals-in-clean-energy-transitions
6. USGS mineral statistics — https://www.usgs.gov/centers/national-minerals-information-center
7. Equities: Zijin · CMOC · VRT · NVDA

Not investment advice. Cost shares and scarcity scores are model illustrations—defer to latest filings and market data.