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For decades, copper has quietly done some of the hardest work in heavy-duty truck braking systems.
It stabilized friction. It pulled heat out of the pad. It reinforced the friction matrix. It helped create the all-important transfer film that makes air disc brakes perform smoothly under punishing duty cycles.
And now, it’s effectively gone.
As of Jan. 1, 2025, brake pads sold in and Washington must contain less than 0.5% copper by weight. This is a threshold widely considered...
READ FULL ARTICLE: https://www.truckinginfo.com/digital-cover-features/copper-under-pressure-what-the-shift-to-copper-free-brake-pads-means-for-fleets
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