Misc
Brass Rods: The Secure Choice
The following content is sponsored by the Copper Development Association
Brass Rods: The Secure Choice
The unique combination of machinability and recyclability makes brass rods the secure choice for manufacturers seeking future-proof raw material solutions.
This infographic, from the Copper Development Association, shows three ways brass rods give manufacturers greater control and a license to grow in the competitive market for precision-machined and forged products.
Future-Proof Investments in New Machine Tools
A material’s machinability directly impacts machine throughput, which typically has the largest impact on machine shop profitability.
The high-speed machining capabilities of brass rods maximize machine tool performance, allowing manufacturers to run the material faster and longer without sacrificing tool life, chip formation, or surface quality.
The high machining efficiency of brass leads to reduced per-part costs, quicker return on investment (ROI) for new machine tools, and expanded production capacity for new projects.
Supply Security Through Closed Loop Recycling
Brass, like its parent element copper, can be infinitely recycled.
In 2022, brass- and wire-rod mills accounted for the majority of the 830,000 tonnes of copper recycled from scrap in the U.S.
Given that scrap ratios for machined parts typically range from 60-70% by weight, producing mills benefit from a secure and steady supply of clean scrap returned directly from customers, which is recycled to create new brass rods.
The high residual value of brass scrap creates a strong recycling incentive. Scrap buy back programs give manufacturers greater control over raw material net costs as scrap value is often factored into supplier purchase agreements.
Next Generation Alloys for a Lead-Free Future
Increasingly stringent global regulations continue to pressure manufacturers to minimize the use of materials containing trace amounts of lead and other harmful impurities.
The latest generation of brass-rod alloys is engineered to meet the most demanding criteria for lead leaching in drinking water and other sensitive applications.
Seven brass-rod alloys passed rigorous testing to become the only ‘Acceptable Materials’ against lower lead leaching criteria recently adopted in the national U.S. drinking water quality standard, NSF 61.
Learn more about the advantages of brass rods solutions.
Misc
Charted: The End-of-Life Recycling Rates of Select Metals
End-of-life recycling rates measure the percentage of a material that is recovered at the end of its useful life, rather than being disposed of or incinerated.
Charted: The End-of-Life Recycling Rates of Select Metals
This was originally posted on our Voronoi app. Download the app for free on Apple or Android and discover incredible data-driven charts from a variety of trusted sources.
We visualize the end-of-life recycling rates (EOL-RR) of commonly used metals in the economy. Data is sourced from the International Energy Agency, last updated in 2021.
Tracking recycling rates helps manage resources better and make smarter policies, guiding efforts to cut down on waste.
Ranked: The End of Life Recycling Rates of Select Metals
Gold has an 86% recycling rate according to the latest available data. Per the Boston Consulting Group, one-third of total gold supply was met through recycling between 1995–2014.
| Metal | End-of-life recycling rate (2021) | 🔍 Used In |
|---|---|---|
| Gold | 86% | 💍 Jewelry / Electronics |
| Platinum/Palladium | 60% | 🔬 Optical fibers / Dental fillings |
| Nickel | 60% | 🔋 Batteries / Turbine blades |
| Silver | 50% | 💍 Jewelry / Mirrors |
| Copper | 46% | 🔌 Electrical wiring / Industrial equipment |
| Aluminum | 42% | ✈️ Aeroplane parts / Cans |
| Chromium | 34% | 🍽️ Stainless steel / Leather tanning |
| Zinc | 33% | 🔗 Galvanizing metal / Making rubber |
| Cobalt | 32% | 🔋 Batteries / Turbine engines |
| Lithium | 0.5% | 🔋 Batteries / Pacemakers |
| REEs | 0.2% | 📱 Mobile phones / Hard drives |
Note: Figures are rounded.
Several factors can influence metal recycling rates. According to this International Resource Panel report, metals that are used in large quantities (steel) or have a high value (gold) tend to have higher recycling rates.
However, for materials used in small quantities in complex products (rare earth elements in electronics), recycling becomes far more challenging.
Finally, a metal’s EOL-RR is strongly influenced by the least efficient link in the recycling chain, which is typically how it’s initially collected.
Learn More on the Voronoi App 
If you enjoyed this post, check out Critical Materials: Where China, the EU, and the U.S. Overlap which shows how critical materials are classified within different jurisdictions.
Misc
Companies with the Most Fossil Fuel and Cement CO2 Emissions
Half of the world’s total fossil fuel and cement carbon dioxide emissions in 2023 came from just 36 companies.
Companies with the Most Fossil Fuel and Cement CO2 Emissions
This was originally posted on our Voronoi app. Download the app for free on iOS or Android and discover incredible data-driven charts from a variety of trusted sources.
Key Takeaways
- Half of the world’s fossil fuel and cement carbon dioxide emissions in 2023 came from just 36 entities, according to a report by the Carbon Majors Project
- If Saudi Aramco were a country, it would be the fourth-largest polluter in the world, after China, the U.S., and India.
- Five publicly traded oil companies—ExxonMobil, Chevron, Shell, TotalEnergies, and BP—together accounted for 5% of global carbon dioxide emissions from fossil fuels.
Chinese Companies Dominate the List
This graphic is based on Carbon Majors, a database of historical production data from 180 of the world’s largest oil, gas, coal, and cement producers representing 169 active and 11 inactive entities.
In 2023, the top 20 highest carbon-producing entities were responsible for 17.5 gigatonnes of carbon dioxide equivalent (GtCO₂e) in emissions, accounting for 40.8% of global fossil fuel and cement CO₂ emissions. The list is largely dominated by state-owned companies, with 16 of the top 20 being state-controlled. Notably, eight Chinese entities contributed to 17.3% of global fossil fuel and cement CO₂ emissions in 2023.
| Entity | Total emissions (MtCO2e) | Global CO2 emissions (%) |
|---|---|---|
| 1 | Saudi Aramco | 4.4% |
| 2 | Coal India | 3.7% |
| 3 | CHN Energy | 3.7% |
| 4 | Jinneng Group | 2.9% |
| 5 | Cement industry of China | 2.8% |
| 6 | National Iranian Oil Company | 2.8% |
| 7 | Gazprom | 2.3% |
| 8 | Rosneft | 1.9% |
| 9 | Shandong Energy | 1.7% |
| 10 | China National Coal Group | 1.7% |
| 11 | Abu Dhabi National Oil Company | 1.6% |
| 12 | CNPC | 1.6% |
| 13 | Shaanxi Coal and Chemical Industry Group | 1.6% |
| 14 | Iraq National Oil Company | 1.3% |
| 15 | Shanxi Coking Coal Group | 1.3% |
| 16 | ExxonMobil | 1.3% |
| 17 | Sonatrach | 1.2% |
| 18 | Chevron | 1.1% |
| 19 | Kuwait Petroleum Corp. | 1.0% |
| 20 | Petrobras | 1.0% |
| 21 | Shell | 0.9% |
| 22 | Pemex | 0.9% |
| 23 | TotalEnergies | 0.8% |
| 24 | QatarEnergy | 0.8% |
| 25 | Lukoil | 0.8% |
| 26 | BP | 0.8% |
| 27 | Glencore | 0.7% |
| 28 | China Huaneng Group | 0.7% |
| 29 | Luan Chemical Group | 0.7% |
| 30 | Equinor | 0.7% |
| 31 | Peabody Energy | 0.7% |
| 32 | Nigerian National Petroleum Corp. | 0.6% |
| 33 | CNOOC | 0.6% |
| 34 | ConocoPhillips | 0.6% |
| 35 | Eni | 0.6% |
| 36 | Petronas | 0.5% |
Coal continued to be the largest source of emissions in 2023, representing 41.1% of emissions in the database and continuing a steady upward trend since 2016. Coal emissions grew by 1.9% (258 megatonnes of carbon dioxide equivalent – MtCO₂e) from 2022, while cement saw the largest relative increase at 6.5% (82 MtCO₂e), driven by expanding production.
In contrast, natural gas emissions fell by 3.7% (164 MtCO₂e), and oil emissions remained stable with only a slight increase of 0.3% (73 MtCO₂e).
Learn More on the Voronoi App
To learn more about this topic, check out this graphic that shows greenhouse gas emissions by sector in 2023, according to data was compiled by the United Nations. The power sector remains the largest emissions contributor.
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