Metals & Mining, Coal, Chemicals, Ferrous, Metallurgical Coal, Polymers, Solvents & Intermediates, Non-Ferrous
November 04, 2026
Platts proposes amendments to the Global Industrial Materials Index component weightings and composition for 2027
Platts, part of S&P Global Energy, is proposing amendments to the Platts Global Industrial Materials Index, including updates to component weightings for 2027 and the addition of the Platts Global Construction Index as a new component, effective Jan. 4, 2027.
The proposal reflects the scale and relevance of construction materials production within the broader global industrial materials sector and aims to broaden the Industrial Materials Index definition to represent key inputs across manufacturing and construction supply chains.
The proposed changes would incorporate construction materials into the index, with Platts Global Construction Materials Index [ PCMIA00] replacing steel scrap as an index component, while reweighting the index basket to reflect the latest production, consumption and pricing data.
For details on the Platts Global Construction Materials Index, to be launched effective Dec. 1, please see the subscriber note available here.
The proposed new weightings for the components are as follows:
| Commodity | Assessment | Symbol | Currency/UoM | Assessment frequency | Current weighting | Revised weighting |
| Construction Materials | Platts Global Construction Materials Index | PCMIA00 | $/ mt | Daily | NA | 29.09% |
| Polyethylene | Global LDPE Index | AAXVR00 | $/ mt | Daily | 8.43% | 7.19% |
| Polypropylene | Global PP Index | AAXVS00 | $/ mt | Daily | 5.45% | 4.46% |
| Purified Terephthalic Acid | PTA FOB China | PTFCA00 | $/ mt | Daily | 4.20% | 3.27% |
| Polyvinyl Chloride | PVC Susp FOB China | EBPVS00 | $/ mt | Daily | 2.09% | 1.59% |
| Rubber | ESBR 1502 CFR NE Asia | AAWZI04 | $/ mt | Weekly | 3.11% | 2.64% |
| ABS | ABS Inj CFR China | PHAHF00 | $/ mt | Weekly | 0.91% | 0.85% |
| Iron ore | IODEX CFR China | IODBZ00 | $/ dmt | Daily | 17.29% | 11.77% |
| Coking coal | Prem Low Vol HCC FOB Aus | PLVHA00 | $/ mt | Daily | 15.07% | 11.13% |
| Copper | Copper CIF China Fixed Price Equivalent (All-in) | MMCUC00 | $/ mt | Daily | 13.76% | 12.28% |
| Aluminum | Aluminum US Transaction (All-in) | MMAAF10 | cents/lb | Daily | 14.79% | 15.73% |
The Platts Industrial Materials Index (PLINM00) is a weighted average of Platts physical price assessments and indices of key commodities across the Chemicals, Construction and Metals sectors, published in $/mt. The index is designed to represent key material inputs used across manufacturing and construction supply chains.
The weightings are reviewed annually to keep the index representative of global supply and demand trends.
The following table details the sources of the production or consumption numbers used to calculate the weightings of each commodity:
| Commodity | Source |
| Global Construction Index | S&P Global Energy CERA |
| Polyethylene | S&P Global Energy CERA |
| Polypropylene | S&P Global Energy CERA |
| Purified Terephthalic Acid | S&P Global Energy CERA |
| Polyvinyl chloride | S&P Global Energy CERA |
| Rubber | S&P Global Energy CERA and International Rubber Study Group |
| ABS | S&P Global Energy CERA |
| Iron ore | United States Geological Survey |
| Coking coal | International Energy Agency |
| 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 at commodity-indices-specifications.pdf.
Please send any feedback or questions by Nov. 17 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.