Two key engineering metals — aluminum and nickel — posted significant year-over-year price gains through July 2026, driven by compounding supply-side constraints that are reshaping cost calculations for precision-machined parts. Meanwhile, steel prices continue to slide, and crude oil has fallen sharply since June, creating an uneven cost landscape that CNC parts buyers need to navigate carefully.
This article summarizes the verified price data as of July 31, 2026, explains the supply dynamics behind each move, and outlines the specific verification steps purchasing teams should take when sourcing aluminum, stainless steel, and nickel-alloy CNC parts in the current quarter.
Aluminum: $3,195/ton, +24% Year-on-Year
Aluminum futures on the London Metal Exchange closed July 31, 2026 at approximately $3,195 per metric ton, up 3.14% month-over-month and 24.14% compared to July 2025, according to Trading Economics data retrieved August 2, 2026. The metal touched a four-month low of $3,085 earlier in July before rebounding.
Two supply-side factors are driving the price:
- Persian Gulf supply disruption. The US-Iran conflict, which began in February 2026 and has seen an interim ceasefire since June 18, continues to restrict shipping through the Strait of Hormuz. The Gulf region accounts for approximately 9% of global aluminum supply. Although the ceasefire MOU has allowed some tanker traffic to resume, aluminum shipments from Gulf smelters have not returned to pre-conflict levels as of late July.
- China’s 45-million-ton production cap. China — which produces roughly 60% of the world’s aluminum — is approaching its government-mandated capacity ceiling of 45 million metric tons per year. As the cap becomes increasingly binding in 2026, incremental demand growth is met by supply that cannot expand domestically. This structural constraint amplifies the impact of any external disruption.
LME warehouse inventories also sat at their lowest levels since 2022, providing limited buffer against further price moves. Shanghai Futures Exchange aluminum stockpiles continued declining in July, indicating sustained downstream demand despite higher prices.
Nickel: $17,255/ton, +15% Year-on-Year
Nickel traded at approximately $17,255 per metric ton on July 31, up 5.28% month-over-month and 14.88% compared to July 2025, per Trading Economics data. The metal reached a one-month high in late July amid escalating supply concerns in Indonesia, the world’s largest nickel producer.
The immediate trigger: Indonesian authorities increased inspection scrutiny on smelter shipments operated by Tsingshan Holding Group — the world’s largest nickel producer — specifically targeting mixed hydroxide precipitate (MHP) exports over possible rare-earth content in cargoes. Several export loadings were suspended, disrupting shipments of multiple nickel product categories.
While the Indonesian government has since moved to coordinate with industry participants and regulatory agencies to resolve bottlenecks, the episode revealed the concentration risk in global nickel supply. Indonesia accounts for over 50% of world nickel production, and any regulatory tightening — whether for environmental compliance, export controls, or inspection regimes — can move prices within days.
Additional support for nickel prices came from expectations of tighter Indonesian production controls and rising sulfur costs, which affect nickel processing economics.
Steel: Diverging Trend — CNY 2,953/ton, Down 8% Year-on-Year
In contrast to aluminum and nickel, Chinese steel rebar futures fell below CNY 3,000 per metric ton in July, reaching their lowest since June 2025. Steel prices were down 3.05% month-over-month and 8.09% year-over-year as of July 31, according to Trading Economics.
The driver: China’s prolonged property-sector downturn continues to suppress construction demand, which accounts for roughly one-third of Chinese steel consumption. Tangshan-area steel mills have reported average losses exceeding CNY 100/ton, and the July Politburo meeting in Beijing did not announce major new stimulus measures, instead focusing on implementing existing fiscal policy.
For CNC parts buyers, this divergence matters: steel-intensive parts (structural brackets, tooling plates, machine frames) face a different cost trajectory than aluminum or stainless steel components.
Oil: Brent Below $70/barrel — Logistics Relief
Crude oil prices have fallen sharply since the peak of the Strait of Hormuz crisis. Brent crude averaged $85/barrel in June 2026 — down $22/barrel from May — and dropped below $70/barrel on July 1, according to the U.S. Energy Information Administration’s Short-Term Energy Outlook released in July 2026. The EIA forecasts Brent averaging $70/barrel in Q4 2026 and $65/barrel in 2027.
This has direct implications for CNC parts purchasing:
- Ocean freight costs should moderate as fuel surcharges decline, potentially reducing landed costs for trans-Pacific and Asia-Europe parts shipments.
- Domestic trucking and last-mile delivery in the U.S. may see some relief, though labor costs and driver availability remain the dominant factors.
- Energy-intensive processing (aluminum smelting, heat treatment, electroplating) may see lower input costs, but this effect lags fuel price changes by weeks to months and varies significantly by region.
However, these logistics savings are unlikely to fully offset the aluminum premium embedded in current LME prices. For a typical CNC-machined aluminum part where material cost represents 15-30% of the total part price, a 24% raw material increase could add 3.6-7.2% to the per-unit cost — before accounting for any supplier margin adjustments. See our guide to CNC machining aluminum alloys for material-specific machinability and cost considerations.
What CNC Parts Buyers Should Verify Now
Given these cross-currents, purchasing teams sourcing precision-machined aluminum, stainless steel, or nickel-alloy components should take the following steps before committing to Q3 2026 orders:
1. Request Material Surcharge Transparency
Ask your CNC machining supplier to break out the material cost component from labor, tooling, and finishing in quotations. A supplier that quotes a single “all-in” price without explaining how metal market movements affect it is one you cannot benchmark against LME data. This is especially important for aluminum 6061-T6, 7075-T6, 304/316L stainless steel, and nickel alloys like Inconel 718 — all of which are sensitive to the nickel and aluminum price trends discussed above.
2. Verify Alloy Grade and Mill Certificate Source
When aluminum prices rise, substitution risk increases. Verify that the material specified on your drawing (e.g., 6061-T651 per ASTM B209) matches the mill test certificate (MTC) provided. If your supplier is sourcing from multiple mills or regions, ask whether the billet or plate origin is from Persian Gulf producers (subject to shipping disruption) or from Chinese/Indian mills (subject to different trade duties and freight rates).
3. Lock Prices with Validity Windows
For production runs spanning multiple months, negotiate price-validity windows of 30-60 days with a clear formula for adjustments beyond that period (e.g., tied to the LME aluminum cash settlement price or the Fastmarkets MB stainless steel surcharge index). Do not accept open-ended “subject to market conditions” clauses without an objective reference index.
4. Evaluate Steel vs. Aluminum Trade-offs
With steel prices declining and aluminum rising, the cost gap between a machined steel part and its aluminum equivalent is narrowing. If your application permits material substitution — say, a steel bracket where weight savings are not critical — re-run the cost comparison with current material quotes. Our CNC milling vs. turning comparison may help when re-evaluating which process offers the better material utilization rate for redesigned parts. For stainless steel parts, the nickel content (typically 8-10.5% in 304 and 10-14% in 316) means that nickel’s 15% year-on-year gain directly increases raw material cost, though pass-through to final part price varies by supplier. Review our stainless steel CNC machining guide to understand how alloy selection affects both cost and machinability.
5. Watch for Freight-Linked Quote Adjustments
If your supplier’s most recent quotation was issued in April-May 2026 — when Brent crude was above $100/barrel and Strait of Hormuz transit was severely disrupted — the freight and logistics assumptions in that quote may now be outdated. Ask your supplier to re-confirm shipping costs against current fuel surcharge tables and container freight indices. The Shanghai Containerized Freight Index (SCFI) and Drewry World Container Index are reasonable reference points.
Near-Term Outlook
The EIA’s July 2026 STEO projects Brent crude at $70/barrel in Q4 2026 and $65/barrel in 2027, which should continue easing logistics costs. However, the aluminum supply picture remains tight: Persian Gulf production is expected to normalize only gradually through Q4 2026 to Q1 2027, and China’s production ceiling is a structural constraint that will not disappear with the resolution of any single conflict.
For nickel, the Indonesian inspection episode highlights concentration risk. A coordinated policy tightening — whether for environmental compliance, downstream processing mandates, or export taxation — could create further supply disruptions. The Indonesian government has periodically discussed restricting raw nickel ore exports to encourage domestic processing; any formal implementation would tighten the global nickel market significantly.
Trading Economics consensus forecasts aluminum at $3,231/ton by end of Q3 2026 and $3,421/ton in 12 months, suggesting analysts expect the current price level to be sustained or exceeded. Nickel forecasts point to $17,485/ton by Q3 end and $18,677/ton in 12 months.
Conclusion
July 2026 metal markets present a mixed picture for CNC parts buyers: aluminum and nickel prices are elevated due to real supply constraints that are unlikely to resolve quickly, while steel prices and logistics costs are moving favorably. The net effect on a precision-machined parts budget depends heavily on material mix, part geometry (which determines material utilization), and supplier sourcing strategy.
The actionable step is not to delay orders in hopes of price relief, but to verify that your current quotations reflect July-level material costs and freight assumptions — not those from the April-May crisis period — and to structure longer-term agreements with transparent index-based adjustment mechanisms. For suppliers that cannot or will not provide this transparency, the current environment offers a clear signal to qualify alternative sources.
Sources
- Trading Economics. “Aluminum — Price — Chart — Historical Data.” Retrieved August 2, 2026. https://tradingeconomics.com/commodity/aluminum
- Trading Economics. “Nickel — Price — Chart — Historical Data.” Retrieved August 2, 2026. https://tradingeconomics.com/commodity/nickel
- Trading Economics. “Steel — Price — Chart — Historical Data.” Retrieved August 2, 2026. https://tradingeconomics.com/commodity/steel
- U.S. Energy Information Administration. “Short-Term Energy Outlook — July 2026.” https://www.eia.gov/outlooks/steo/
- AP News. “US and Iran sign MOU to end Strait of Hormuz conflict.” June 18, 2026. https://apnews.com/article/iran-us-israel-war-oil-deal-june-17-2026-19652f4611b704c0a991bf1f5bc9a4b9
About this analysis: This article reports verified commodity price data and supply-chain developments as of July 31, 2026. Price data is sourced from Trading Economics and the U.S. EIA. Forward-looking statements (price forecasts, analyst expectations) are clearly attributed to the forecasting source. No information about this website’s capabilities, certifications, customers, or specific production capacity is presented as news; any reference to machining parameters or material grades describes general engineering practice, not site-specific capability.
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