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C89835 BISMUTH BRONZE

Federalloy III Lead-Free Bearing Bronze

eco bronze

The values listed above represent reasonable approximations suitable for general engineering use. Due to commercial variations in composition and to manufacturing limitations, they should not be used for specification purposes. See applicable ASTM specification references.

C89835 Bismuth Bronze is a C93200, C83600 and C84400 lead-free replacement alloy. Bismuth bronze is used as a lead-free alternative in fittings, bushings and bearings, valued for its machinability and non-toxicity, replacing traditional leaded bronzes. Bismuth bronze offers excellent machinability, rivaling traditional leaded bronzes by using bismuth as a lead-free additive to provide lubrication, allowing for faster cutting, reduced tool wear, and easier fabrication of complex parts like gears and fittings, meeting strict regulations for potable water applications. While machinability ratings are high (often 80-90% or 70-85%), it's slightly less than some pure tin bronzes but a great choice for lead-free demands in plumbing, pumps, and bearings. C89835 Bismuth Bronze Conforms to Federalloy III, Bunting B-04 ROHS Compliant

C89835 lead-free bismuth bronze
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What's Driving
Metal Prices

Factors creating the on-going surge in copper prices and base metal prices.

The U.S. imposed a 50% Section 232 tariff on the copper content of semi-finished and derivative copper products, effective August 1, 2025. These tariffs aim to bolster domestic production but create complexities for businesses in pricing, sourcing, and compliance, affecting global copper markets. 

In addition copper costs are soaring due to massive demand from the energy transition (EVs, renewables, grid) and AI data centers colliding with slow mine supply growth, production disruptions (labor, technical issues), aging mines, and government policies like tariffs, creating a structural supply deficit. 

Tin prices jumped to a record level due to a severe, ongoing global supply squeeze from mine disruptions (DRC, Myanmar, Indonesia) and increasing demand driven by its critical role in electronics (solder), green energy tech, and packaging, creating a significant market deficit and attracting speculative investment. Supply chain issues, including export permit delays and political instability in key producing regions, combined with growing recognition of tin's necessity for the energy transition, fueled a rally to multi-year highs in late 2025 and early 2026. 

Nickel prices are rising due to anticipated supply cuts from major producer Indonesia, tighter quotas, increased demand from stainless steel and EV battery sectors (despite some LFP shifts), speculative buying, and broader market strength in metals, with investors reacting to policy signals and potential disruptions.

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