Beryllium: Correlation
Prices it moves with, and why
Beryllium comes mostly from a single US producer mining bertrandite, plus beryl from a few countries. It is sold as copper-beryllium alloy, metal or oxide under private contracts to defence, aerospace, electronics and nuclear users, so prices are opaque and stable.
No public price Beryllium has no public monthly price series: Sold by one main producer on private contracts; no public price series.What its price moves with
Most beryllium is sold as copper-beryllium alloy, a strong, conductive spring material for connectors and tools. The alloy price moves with copper, the main ingredient by weight, while the beryllium content is priced separately under supplier contracts.
Not enough overlapping price history to measure.Beryllium and aluminium-beryllium composites compete with aluminium alloys, titanium and carbon fibre where stiffness and low weight matter, such as satellite structures and optics. Toxicity rules and high cost push designers towards the cheaper aluminium alternatives when they can.
Not enough overlapping price history to measure.Beryllium metal and oxide reflect and slow neutrons, so they are used in research reactors and some reactor designs. Interest in advanced reactors could add demand, but the nuclear market is small and supplied on long contracts.
Not enough overlapping price history to measure.Beryllium lines the first wall of some fusion test reactors and appears in tritium breeding blanket designs. Fusion is still experimental, so this is a possible future source of demand rather than a current price driver.
No public price for fusion reactors, so the link is explained in words only.How to read these numbers
Correlation of monthly changes (the number in the coloured pill) compares how much each price moved, month by month, since 2006 or the first month both series exist. It runs from −1 to +1: near +1 the two usually rise and fall in the same months, near 0 there is no link, and a negative number means they tend to move in opposite directions. Above 0.7 is strong, 0.4 to 0.7 moderate, 0.2 to 0.4 weak.
12-month changes compare year-on-year moves, which shows whether two prices share the same cycles even when the month-to-month noise differs.
Price function is a straight-line fit of the two prices on logarithmic scales: price ≈ k × (partner price)β. β is how much this price moves, in per cent, for a 1% move in the partner over the whole period, and R² is the share of the variation the fit explains. Two prices that both drift up with inflation can fit well without any real link, so read it together with the monthly correlation.
Lead or lag checks whether the monthly correlation is clearly higher when one price is shifted by 1 to 6 months.
Correlation is not cause. The reasons on each card explain the economic link; the numbers show how strongly it has shown up in prices. Proxy series are US producer price indexes or related prices and can blur the real link.
Data: World Bank Commodity Price Data (Pink Sheet), October 2026; US Bureau of Labor Statistics producer price indexes, IMF primary commodity prices and US EIA prices via FRED, Federal Reserve Bank of St. Louis, retrieved November 2026. Calculations by this site.