... displacement by stretching or contracting1.2) material :alloy: stannum and bronze QSn6.5-0.1, brass H80, stainless steel: 1Cr18Ni9Ti, 1Cr18Ni9 ... 4) stiffness tolerance: greater precision :+/-10%1.5)working temperature:Bronze alloy QSn6.5-0.1: -60--+100 °CStainless steel ... 1Cr18Ni9Ti, 1Cr18Ni9, 0Cr19Ni9 : -194--+400 °C1.6) working media :Bronze alloy QSn6.5-0.1, H80 : atmosphere or fresh water ...