Considerable mechanical property data has been generated for as-produced material and following simulated braze cycles. GRCop-84 can be processed and joined by a variety of methods such as extrusion, rolling, bending, stamping, brazing, friction stir welding, and electron beam welding. It possesses excellent high- temperature strength, creep resistance and low-cycle fatigue up to 700 C (1292 F) along with low thermal expansion and good conductivity. GRCop-84 (Cu-8 at.% Cr-4 at.% Nb) is a new high- temperature copper-based alloy. GRCop-84: A High- Temperature Copper Alloy for High-Heat-Flux Applications Potential applications include plastic injection molds, resistance welding electrodes and holders, permanent metal casting molds, vacuum plasma spray nozzles and high temperature heat exchanger applications. GRCop-84 has demonstrated an ability to be friction stir welded, brazed, inertia welded, diffusion bonded and electron beam welded for joining to itself and other materials. GRCop-84 forms well, so conventional fabrication methods including stamping and bending can be used.

GRCop-84 can be manufactured into a variety of shapes such as tubing, bar, plate and sheet using standard production techniques and requires no special production techniques. It also has a lower thermal expansion than copper and many other low alloy copper-based alloys. GRCop-84 is a copper-based alloy with excellent elevated temperature strength, good creep resistance, long LCF lives and enhanced oxidation resistance. While designed for rocket engine main combustion chamber liners, GRCop-84 (Cu-8 at.% Cr-4 at.% Nb) offers potential for high heat flux applications in industrial applications requiring a temperature capability up to approximately 700 C (1292 F). GRCop-84: A High Temperature Copper-based Alloy For High Heat Flux Applications High conductivity and hardness of alloy exploited in welding electrodes and in high-voltage and high-current switches and other applications in which wear poses design problem. Designed for use in presence of high heat fluxes and active cooling for example, in heat exchangers in advanced aircraft and spacecraft engines, and other high- temperature applications in which there is need for such material. Michal, GaryĪlloy of Cu/8Cr/4Nb (numbers indicate parts by atom percent) improved over older high- temperature copper-based alloys in that it offers enhanced high temperature strength, resistance to creep, and ductility while retaining most of thermal conductivity of pure copper in addition, alloy does not become embrittled upon exposure to hydrogen at temperatures as high as 705 degrees C. This block will be invisible on preview or publish retaining only the button.īACK TO TOP FUNCTION WILL WORK ONLY AFTER PREVIEW OR PUBLISH.Dreshfield, Robert L. This is a global block and it only needs to be added and configured on one page and the settings will apply to all pages. IF BUTTON NOT VISIBLE, PLS MOVE SIDEBAR TO THE RESPECTIVE HEIGHT YOU HAVE SET FOR BUTTON TO APPEAR FOR CUSTOMIZATION. 200px, 350px, 500px and 650px for the button to appear.Ĭhange plugins='Dentaurabacktotopa' to plugins='Dentaurabacktotopb' for 350 px in the first line of this block HTMLĬhange plugins='Dentaurabacktotopa' to plugins='Dentaurabacktotopc' for 500 px in the first line of this block HTMLĬhange plugins='Dentaurabacktotopa' to plugins='Dentaurabacktotopd' for 650 px in the first line of this block HTML

However you have 4 height options to set via codeditor. As you scroll down the page, it displays after 200px of movement. The back to top button scroll delay before the button shows is set to 200px as the default. Dentaura Back to top button with Color changeable arrowĬlick the block controls to customize the button.

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