Chemicals, Coal, Metals & Mining, Polymers, Metallurgical Coal, Non-Ferrous, Ferrous, Solvents & Intermediates
December 01, 2025
Platts to update component weighting for Platts Industrial Materials Index for 2026
Platts, part of S&P Global Energy, will update the weighting used in the Platts Industrial Materials Index (PLINM00), effective Jan. 2, 2026.
The revised weighting reflects an update in the market value of the components, following a review conducted by Platts. Market value of the components are approximated by the product of the latest global production or consumption volume of the commodity and its latest two-year average price.
For PVC, in the revised weightings, the market value of the component assessment is approximated by the product of the latest global production and the latest two-year average price of PVC Susp FOB China (EBPVS00), a change from a ratio of 3:1 between the FOB China and FAS Houston assessments used previously.
For rubber, the market value of the component assessment is approximated by the product of the latest global consumption of both synthetic and natural rubber and the latest two-year average price of ESBR 1502 CFR NE Asia (AAWZI04).
For coking coal, in the revised weightings, global production volumes are obtained from the US Energy Information Administration.
The weightings are reviewed annually to keep the index representative of global supply and demand trends.
The new weighting for the components are as follows:
| Commodity | Assessment | Symbol | Currency/UoM | UoM conversion | Assessment frequency | Current weighting in index | Revised weighting (based on latest data) |
| Polyethylene | Global LDPE Index | AAXVR00 | $/mt | 1 | Daily | 8.02% | 8.43% |
| Polypropylene | Global PP Index | AAXVS00 | $/mt | 1 | Daily | 5.33% | 5.45% |
| Purified Terephthalic Acid | PTA FOB China | PTFCA00 | $/mt | 1 | Daily | 3.92% | 4.20% |
| Polyvinyl chloride | PVC Susp FAS Houston | PHAIT00 | $/mt | 1 | Weekly | 0.56% | NA |
| Polyvinyl chloride | PVC Susp FOB China | EBPVS00 | $/mt | 1 | Daily | 1.71% | 2.09% |
| Rubber | ESBR 1502 CFR NE Asia | AAWZI04 | $/mt | 1 | Weekly | 3.01% | 3.11% |
| ABS | ABS Inj CFR China | PHAHF00 | $/mt | 1 | Weekly | 0.67% | 0.91% |
| Steel scrap | Heavy Melting Scrap Grade 1 and 2 80/20 CFR Turkey | TS01011 | $/mt | 1 | Daily | 12.22% | 14.89% |
| Iron ore | IODEX 62% Fe CFR China | IODBZ00 | $/mt | 1 | Daily | 17.87% | 17.29% |
| Coking coal | Prem Low Vol HCC FOB Aus | PLVHA00 | $/mt | 1 | Daily | 19.79% | 15.07% |
| Copper | Copper CIF China Fixed Price Equivalent (All-in) | MMCUC00 | $/mt | 1 | Daily | 14.74% | 13.76% |
| Aluminum | Aluminum US Transaction (All-in) | MMAAF10 | cents/lb | 22.0462442 | Daily | 12.16% | 14.79% |
The Platts Industrial Materials Index (PLINM00) is a weighted average of Platts physical price assessments and indices of key industrial commodities in the Chemicals and Metals sectors, published in $/mt. These commodities are critical in core industrial production processes.
The following table details the sources of the production or consumption numbers used to calculate the weightings of each commodity:
| Commodity | Source |
| Polyethylene | S&P Global Energy |
| Polypropylene | S&P Global Energy |
| Purified Terephthalic Acid | S&P Global Energy |
| Polyvinyl chloride | S&P Global Energy |
| Rubber |
S&P Global Energy International Rubber Study Group |
| ABS | S&P Global Energy |
| Steel scrap | World Steel Association, Bureau of International Recycling |
| Iron ore | United States Geological Survey |
| Coking coal | U.S. Energy Information Administration |
| Copper | United States Geological Survey |
| Aluminum | United States Geological Survey |
Full details about the calculations and methodology of the index can be found in the Global Commodity Indices Specifications Guide, available here.
Please send any feedback or questions to pricegroup@spglobal.com.
For written comments, please provide a clear indication if comments are not intended for publication by Platts for public viewing. Platts will consider all comments received and will make comments not marked as confidential available upon request.