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UNS C69400 is a Silicon Red Brass grade Wrought Copper Alloy. It is commonly called UNS C69400 Copper-zinc brass. It is composed of (in weight percentage) 81.5% Copper (Cu), 14.5% Zinc (Zn), and 4.0% Silicon (Si). Another common designation of UNS C69400 copper alloy is UNS C69400.
Copper is one of the most useful metals known to man, and it was one of the first to be utilized. Copper is a reddish-yellow material and is extremely ductile. Copper has a face-centered-cubic (fcc) crystal structure and has the second best electrical conductivity of the metals, second only to silver compared to which it has a conductivity of 97%. The thermal conductivity of copper is very high, falling in between silver and gold. There are almost 400 different copper alloys depending on the commercial product made; rods, plates, sheets, strips, tubes, pipes, extrusions, foils, forgings, wires, and castings from foundries.
The typical elastic modulus of copper alloys at room temperature (25°C) is about 117 GPa. The typical density of copper alloys ranges from 8.8 to 8.94 g/cm3. The typical tensile strength varies between 172 and 220 MPa. The wide range of ultimate tensile strength is largely due to different heat treatment conditions.
Other common Wrought Copper Alloys include UNS C10100, UNS C10200, UNS C10300, UNS C10400, UNS C10500, UNS C10700, UNS C10800, UNS C11000, UNS C11100, UNS C11300, UNS C11400, UNS C11500, UNS C11600, UNS C12000, UNS C12100, UNS C12200, UNS C12500, UNS C12700, UNS C12800, UNS C12900, UNS C13000, UNS C14200, UNS C14300, UNS C14310, UNS C14500, UNS C14700, UNS C15000, UNS C15500, UNS C15710, UNS C15720, UNS C15735, UNS C15760, UNS C16200, UNS C16500, UNS C17000, UNS C17200, UNS C17300, UNS C17500, UNS C18200, UNS C18400, UNS C18500, UNS C18700, UNS C18900, UNS C19000, UNS C19100, UNS C19200, UNS C19400, UNS C19500, UNS C22000, UNS C22600, UNS C23000, UNS C24000, UNS C26000, UNS C26800, UNS C27000, UNS C28000, UNS C2l000, UNS C31400, UNS C31600, UNS C33000, UNS C33200, UNS C33500, UNS C34000, UNS C34200, UNS C34900, UNS C35000, UNS C35300, UNS C35600, UNS C36000, UNS C36500, UNS C37000, UNS C37700, UNS C38500, UNS C40500, UNS C40800, UNS C41100, UNS C41300, UNS C41500, UNS C42200, UNS C42500, UNS C43000, UNS C43400, UNS C43500, UNS C44300, UNS C44400, UNS C44500, UNS C46400, UNS C46700, UNS C48200, UNS C48500, UNS C50500, UNS C51000, UNS C51100, UNS C52100, UNS C52400, UNS C54400, UNS C60800, UNS C61000, UNS C61300, UNS C61400, UNS C61500, UNS C61800, UNS C61900, UNS C62300, UNS C62400, UNS C62500, UNS C63000, UNS C63200, UNS C63600, UNS C63800, UNS C64200, UNS C65100, UNS C65500, UNS C66700, UNS C67400, UNS C67500, UNS C68700, UNS C68800, UNS C69000, UNS C70400, UNS C70600, UNS C71000, UNS C71500, UNS C71700, UNS C72200, UNS C72500, UNS C73500, UNS C74500, UNS C75200, UNS C75400, UNS C75700, UNS C76200, UNS C77000, and UNS C78200.
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