电阻材料的电阻温度系数与制成电阻元件后的电阻温度系数实际存在着不一致,对这个问题,材料厂与元件厂认识不尽一致。本文以应用广泛的精密电阻合金材料锰铜、卡玛为例,列举试验数据,说明材料的电阻温度系数是根据技术标准与电阻温度系数测试方法测得的数值。这个数值是排除了诸如骨架、应力等因素的影响,因此它仅仅反映了合金材料在规定条件下所“固有”的电阻温度系数,作为元件制造时选材的依据。 The resistance temperature coefficient of the resistance material and the resistance temperature coefficient of the resistance element actually exist inconsistencies. For this problem, the material factory and the component factory have different understanding. In this paper, the widely used precision resistance alloy materials Manganese Copper, Kama as an example, the test data are listed, indicating that the material temperature coefficient of resistance is based on technical standards and resistance temperature coefficient test method to measure the value. This value is ruled out such as the skeleton, stress and other factors, it only reflects the alloy material under the conditions specified in the “inherent” temperature coefficient of resistance as the basis for the selection of materials manufacturing components.