resistive strain gauge
Hamilton Precision Metals
Instrumentation/measurement components – .0001" to .0002" (.0025mm - .0050mm) thick precision resistor alloy foil is used in the manufacture of metal foil resistance strain gages, which serve as the active element in electronic load cells and other load- or strain-sensing applications. HPM supplies the leading strain-gage manufacturers with a range of materials, including Constantan, EvanohmÂ® R (Karma) and Platinum-Tungsten. HPM stocks a variety of Constantan metals with thermal expansion compensation behavior to match aluminum, mild steel or stainless steel load-cell spring elements. Qualities include an ultra-smooth and clean surface for bonding, minimal pinholes and ultra-tight thickness control.