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Last updated: August 13, 2026 · By White Metal Resources Editorial
Quick answer: Glass manufacturing was the single largest industrial end-use of platinum in 2024, at 692 thousand troy ounces of the 2,526 thousand ounce industrial total, per World Platinum Investment Council data prepared by Metals Focus. The metal is used as platinum-rhodium alloy bushings that draw molten fiberglass filaments, and as platinum linings inside melting tanks for high-purity display glass. Platinum resists attack from molten glass at over 1,500 degrees Celsius, so it does not contaminate the product.
Short on time? The facts that matter
- 2024 platinum use in glass manufacturing was 692 thousand troy ounces, the largest single industrial segment that year, per WPIC Platinum Quarterly Q1 2026 prepared by Metals Focus.
- Glass demand fell sharply to 206 thousand ounces in 2025 as capacity additions paused, then is forecast to rebound to 377 thousand ounces in 2026 on new fibreglass capacity, per the same source.
- The glass segment is volatile. It moves with new-plant construction cycles and can even go negative in a given quarter when old melters are decommissioned and their platinum linings are returned to the market.
- Two glass technologies use most of this platinum. Fibreglass bushings draw thousands of continuous filaments through a perforated platinum-rhodium plate. Display glass melting tanks are lined with platinum to keep alkali-free aluminosilicate glass free of contamination.
- The bushing plate is almost always a platinum-rhodium alloy for durability, per the standard reference on glass fibre manufacturing. Pure platinum wetted too easily and wore out too fast.
- Platinum works because it melts at 1,768 degrees Celsius, well above the roughly 1,300 to 1,600 degrees Celsius working range of most industrial glass melts.
- The 2020 CFTC order against JPMorgan explicitly names platinum futures alongside gold, silver and palladium, so the metal is priced in the same regulated derivatives complex you know from those markets.
- None of this is a consumer recycling opportunity. Spent bushings and tank linings are returned to specialist refiners under long-standing industrial contracts, not to scrap yards.
- Nothing on this page is a price forecast. Glass demand is reported after the fact and swings with construction cycles, not with retail investor flows.
How big is glass in world platinum demand?
The World Platinum Investment Council reports platinum demand in seven industrial buckets. In 2024, glass was the largest of them at 692 thousand troy ounces, ahead of chemical at 631 and the residual other category at 603. Petroleum, medical, electrical and hydrogen were all smaller.
The glass segment then dropped hard. It fell to 206 thousand ounces in 2025 as major new fibreglass and display projects paused. WPIC forecasts a rebound to 377 thousand ounces in 2026 as capacity additions resume in Asia, per Platinum Quarterly Q1 2026.
This volatility is not random. Every new fibreglass melter or display-glass tank needs a first fill of platinum linings and bushings that lasts many years. Once the fill is done, the same plant needs only routine top-up until the next refurbishment.
USGS lists glass manufacturing among the leading uses of platinum-group metals in its 2025 Mineral Commodity Summaries, alongside catalytic converters, chemical and petroleum catalysts, and electronic components. USGS does not break glass out with its own tonnage figure at the country level, so WPIC remains the granular reference.
| Year | Platinum glass demand (koz) | Total platinum industrial demand (koz) | Glass share of industrial |
|---|---|---|---|
| 2022 | 436 | 2,288 | 19.1% |
| 2023 | 491 | 2,491 | 19.7% |
| 2024 | 692 | 2,526 | 27.4% |
| 2025 | 206 | 2,049 | 10.1% |
| 2026 forecast | 377 | 2,238 | 16.8% |
Source: World Platinum Investment Council Platinum Quarterly Q1 2026, summary table 1, prepared for WPIC by Metals Focus. Shares computed by us from the koz figures. 2026 is a forecast.
Why is platinum used inside a glass melter at all?
Molten glass at industrial temperatures is aggressively corrosive. It dissolves refractory bricks, oxidises common metals and picks up any impurity that finds its way into the melt. Any contamination shows up in the finished glass as bubbles, streaks or colour shifts.
Platinum solves the problem because it does three unusual things at once. It melts at 1,768 degrees Celsius, per standard reference data, well above the 1,300 to 1,600 degrees Celsius working range of most industrial glass. It resists chemical attack from molten silicate. And it does not release ions that would tint or contaminate the glass.
The trade-off is cost. A cubic centimetre of platinum weighs about 21 grams and one troy ounce costs several hundred dollars at recent price levels, so every square metre of platinum lining represents a significant capital outlay. Glass makers only use platinum where no cheaper alternative meets the purity target.
Two applications dominate. The first is the perforated plate that draws continuous fibreglass filaments. The second is the tank lining and stirring hardware used inside melters that produce high-purity display, optical or specialty glass.
What is a fibreglass bushing and why platinum-rhodium?
A bushing is a small metal furnace with a bottom plate pierced by hundreds or thousands of nozzles. Molten glass flows through the nozzles, forms a hanging drop, and is drawn downward into a continuous filament by a high-speed winder. Each bushing runs dozens of hours a day at temperatures above 1,200 degrees Celsius.
The bushing plate is almost always platinum alloyed with rhodium for durability, per the standard reference on glass fibre manufacturing. Pure platinum was tried first and rejected. The glass wetted the pure metal so well that it ran under the plate and accumulated on the underside, and the plate itself wore out fast.
Adding roughly 10 percent to 20 percent rhodium raises the melting point of the alloy, increases its creep strength at operating temperature and slows recrystallisation. That extends bushing service life from months to years for a given production rate.
The nozzle count is significant. A single bushing can carry 200 to 4,000 nozzles in multiples of 200, per the same reference. A modern textile-grade E-glass line runs many bushings in parallel, so the total platinum inventory in one plant can reach several hundred kilograms of alloy.
How is platinum used in LCD and display glass?
Display glass is chemically demanding. LCD and OLED substrates use an alkali-free aluminosilicate composition that melts near the upper end of the industrial glass range and cannot tolerate contamination. A stray sodium ion in the substrate will migrate into the thin-film transistor and destroy the pixel.
To keep the melt clean, the tank lining and stirring hardware are made of platinum or platinum-rhodium alloy in the sections that contact the molten glass. The metal isolates the melt from refractory ceramic, prevents oxide inclusions and lets makers hold the composition to tight specification.
The forming step also uses platinum. In the fusion-draw or overflow-downdraw process that dominates LCD substrate production, molten glass flows over a precision-machined trough and joins on the underside into a single sheet. The trough must survive extreme temperature and stress without shedding contaminants, which is why platinum-based alloys are used in the hot zone.
Global LCD glass demand slowed in Q1 2026, with no new capacity additions recorded during the quarter, per WPIC. Fibreglass carried the sector: growth was supported by new fibreglass capacity in Asia and rising demand tied to artificial intelligence infrastructure and printed circuit boards.
What role does rhodium play beyond the bushing alloy?
Rhodium is the strengthening partner in the bushing alloy. On its own, rhodium melts at 1,964 degrees Celsius, per standard reference data. Alloying it into platinum shifts the working range higher, holds shape under load and slows the coarsening of the metal grain structure at temperature.
Rhodium is also used in some stirrers and gauzes inside display-glass melters, where the extra strength is worth the higher metal cost. Rhodium is scarcer than platinum, and its price has been more volatile: USGS reports an estimated annual average price of 4,600 dollars per troy ounce for rhodium in 2024, down 31 percent from 6,660 dollars in 2023.
The volume of rhodium consumed by glass is small in absolute terms, since bushing alloys typically contain roughly 10 percent to 20 percent rhodium by mass. The largest single use of rhodium remains gasoline three-way autocatalysts, not glass.
WPIC and Metals Focus do not publish a public rhodium breakdown by glass end-use in the same detail as platinum. Johnson Matthey publishes granular rhodium figures in its PGM Market Reports, which are the industry-standard subscription reference.
How a fibreglass bushing draws molten filaments
The bushing sits at the exit of the melter and shapes the finished fibre. It is a small enough piece of equipment to fit in a service bay, but it does a big share of the work that turns raw silica sand into a continuous filament wound onto a package.
A bushing can run for years before it needs refurbishment. When it does come out, it is not scrapped in the ordinary sense. It is sent to a specialist refiner that recovers the platinum and rhodium, adjusts composition and returns the alloy for a new bushing.
How much dollar value flows through this each year?
The scale becomes concrete once you translate the WPIC ounces into dollars at a labelled example price. This is an illustration for orientation, not a market quote. It ignores refining margins, alloying costs and the value of the rhodium content, which is priced separately.
This value never reaches a consumer. It flows between glass manufacturers, specialist refiners and their financing banks under long-term supply and lease agreements. Some of it is paid up front and some is treated as a metal lease that returns to the lender when the equipment is refurbished.
None of this appears on a coin dealer counter or in an approved depository. If you own physical platinum inside a retirement account, that ounce is a finished bar or coin held by the trustee, and its lifecycle is entirely separate from the industrial platinum inventory described here. For retirement-account rules on this metal see our platinum IRA guide.
Why this is not a consumer recycling opportunity
Spent bushings and tank linings are not scrap in the everyday sense. They are high-value industrial hardware sent directly to accredited refiners under contracts that specify assay methods, settlement terms and metal loss allowances. A private individual does not encounter this material.
Glass-industry PGM refining is dominated by a small number of specialists, notably Heraeus, Johnson Matthey and a handful of others with the metallurgical and assay capability. They recover platinum and rhodium at very high yield, adjust composition and return the alloy for another service cycle.
The consumer-facing PGM recycling story is a different one. It runs through spent automobile catalytic converters and is covered on our PGM recycling and secondary supply page. That stream is the source of most recycled ounces returned to the market each year.
Limits and caveats to this data
Every WPIC figure on this page rounds. Platinum quarterly data is reported in thousand troy ounces to the nearest thousand, and shares computed from those totals inherit the rounding. Numbers may be revised in later quarterly reports.
The seven-bucket industrial breakdown is a WPIC editorial choice. Other publishers such as Johnson Matthey group segments differently, and some public commentary quotes only chemical, petroleum and electrical rather than the full seven-way split. Comparisons across sources should be done bucket by bucket.
Rhodium figures used in glass are not published in the same public granularity as platinum. Volume estimates for rhodium in glass are typically small relative to autocatalyst use and are drawn from subscription industry reports that we do not reproduce.
Nothing on this page is a price forecast. Glass-sector platinum demand is reported after the fact and depends on discrete plant-construction decisions that are not knowable from historical shares alone. Prices swing with those cycles as well as with investment flows and macro conditions.
Frequently asked questions
Why is platinum used in glass manufacturing?
Platinum melts at 1,768 degrees Celsius, resists chemical attack from molten silicate glass and does not release ions that would contaminate the melt. That combination is unique among affordable engineering metals and is why platinum lines bushings and display-glass tanks.
How much platinum does the glass industry use?
Glass consumed 692 thousand troy ounces of platinum in 2024, the largest single industrial end-use that year, per WPIC Platinum Quarterly Q1 2026 prepared by Metals Focus. The figure fell to 206 thousand ounces in 2025 and is forecast at 377 thousand for 2026.
What is a fibreglass bushing?
A bushing is a small heated platinum-rhodium alloy box with a bottom plate pierced by 200 to 4,000 nozzles. Molten glass flows through the nozzles, forms hanging drops and is drawn downward by a winder into continuous filaments a few micrometres across.
Why platinum-rhodium and not pure platinum?
Pure platinum wetted the melt too well and wore out too fast, per the standard reference on glass fibre manufacturing. Adding roughly 10 to 20 percent rhodium raises the alloy melting point, increases creep strength at temperature and extends bushing service life.
Is platinum used in LCD glass?
Yes. LCD and OLED substrates use alkali-free aluminosilicate glass that cannot tolerate sodium contamination. Platinum lines the tank sections that contact the melt and is used in the fusion-draw forming hardware. LCD demand for platinum slowed in Q1 2026 as no new capacity additions were recorded that quarter, per WPIC.
Why did glass platinum demand fall in 2025?
New fibreglass and display-glass capacity additions paused in 2025, so first-fill platinum orders dropped. Some plants were decommissioned and returned platinum to the market. WPIC forecasts a rebound in 2026 as capacity additions resume in Asia, driven in part by demand from artificial intelligence infrastructure and printed circuit boards.
Can I recycle a piece of used bushing?
No, in practical terms. Spent bushings and tank linings are returned by the glass manufacturer to a specialist refiner under long-standing industrial contracts. A private individual does not encounter this material, and the ordinary scrap channel is not equipped to assay or refine it.
Does this affect the price of a platinum coin I own?
Only through the overall supply-demand balance. Industrial glass demand is one of several segments that feed the platinum market. Once a bushing is refined the resulting metal is chemically identical to a mined ounce and trades at the same LBMA benchmark. Nothing on this page is a price forecast.
Sources
- World Platinum Investment Council. Platinum Quarterly Q1 2026. Prepared for WPIC by Metals Focus, May 2026. Supply-demand summary table with industrial end-use split including glass demand year by year.
- United States Geological Survey. Mineral Commodity Summaries 2025: Platinum-Group Metals. January 2025. Confirms glass manufacturing as a leading use of PGMs and reports annual average prices for platinum and rhodium.
- Wikipedia contributors. Glass fiber. Standard reference summarising the direct-melt process, bushing plate design, nozzle counts of 200 to 4,000 in multiples of 200, and the choice of platinum alloyed with rhodium for durability.
- Johnson Matthey. PGM Market Reports. Industry-standard subscription reference used for background on rhodium demand by end-use and the split between glass and other industrial segments.
- London Bullion Market Association. Good Delivery Rules for Platinum and Palladium. Bar weights and 995 parts per thousand minimum fineness rule applicable to refined platinum returned to the market from glass-industry salvage.
- Commodity Futures Trading Commission. CFTC Release 8260-20: Order against JPMorgan Chase, September 29, 2020. Confirms platinum is priced through regulated futures alongside gold, silver and palladium.
