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C64200 Silicon Aluminum Bronze
CDA 642, CA64200, ASTM B150, ASTM B249, ASTM B124, QQ-C-465 AMD 1, AMS 4634D, SAE J461, SAE J463, ASME-SB150

*Mechanical Properties are typical for 1-1/2" rod Hard (10%) Temper

**Test values are nominal approximations and depend on specimen size and orientation.

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.

C64200 SILICON ALUMINUM BRONZE is a non-magnetic alloy that has good fatigue strength and galling resistance. The addition of silicon to this aluminum bronze alloy gives it the highest machinability rating of bronzes and brasses without the addition of lead. Copper alloy C64200 has combined strength, corrosion and wear resistance and is a good choice for parts that require extensive machining. C64200 silicon aluminum bronze conforms to ASTM B150, ASTM B249, QQ-C-465, AMS 4634, SAE J461, SAE J463

C64200 Bronze is used for Valve Components, Valve Bodies, Valve Guides, Gears, Valve Stems, Cams and Marine Hardware.

C64200 Silicon Aluminum 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. 

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