Abstract
1. The authors have made a statistical analysis of the properties of a number of heat-resistant nickel alloys and steels at room and elevated temperatures. They show that there is a linear correlation between the properties, in particular between the short-term and long-term strengths (up to 1000 h) at room temperature and elevated temperatures. 2. They give a scheme for predicting properties which are difficult to determine from properties which are found by tests under tension at room temperature. They suggest some linear regression equations for predicting the long-term strength in terms of the short-term strength at a given confidence level. 3. Analysis of the relations between the very-long-term and short-term strengths of certain heat-resistant steels revealed that there is no linear correlation between these characteristics.
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