本文研究给出一种真实使用环境的温度、湿度和时间3维日历寿命定寿谱，它包含：使用环境的原始参数的实测和统计；参数合并和等腐蚀损伤折算；使用环境下的3个参数任意组合的3维谱编制。该3维谱可根据日历寿命计算或试验需要，编制成多级温度和多级湿度的谱。也可编制成一级温度和一级湿度谱。从理论上讲，由于这些不同的谱是等损伤的，因此最终计算和试验给出的日历寿命是相等的，从而可消除腐蚀领域的“当量折算”这个不准确环节，使日历寿命确定更可靠。

This paper has developed a principle and method of the 3D damage environment spectrum of metallic calendar life, which is made through the operating temperature, humidity and time. It contains: actual mea-surement and statistics of the original parameter of the operating temperature; the formation principle of equal corrosion damage spectrum; 3D spectrum formation method made of the random combination of 3 parameters (temperature, humidity and time) of operating environment; then cases of various 3D spectrum of two regions, namely, Hai Nan and Chong Qing are provided. This 3D spectrum can form a multi-layer humidity and multi-layer temperature spectrum on the basis of calendar life calculation and test demand. Meanwhile, 3D spectrums of one-layer humidity with multi-layer temperature spectrum or 3D spectrums of any other random combination can be formed. Theoretically speaking, since these different spectrums are under equal damage, therefore the calendar lives of final calculation and test are the same. In this way, the inaccurate “ equivalent conversion” phase in the field of corrosion can be eradicated, making the determination of calendar life more reliable.