791 High Temperature Mechanical Properties

The mechanical properties of interest in designing high-temperature components are time-independent properties, for example, short-term tensile (typically below 600°C) and time-dependent properties (typically above 600°C), such as stress rupture and creep strength, and thermal stability, that is, maintenance of reasonable impact toughness after long aging. Table 7.13 lists some of the mechanical properties from recent production heats. Comparison with other high-temperature alloys is provided elsewhere: Recent work on determining 10,000 h average rupture strength of alloys 330, 230, and 602CA have shown that alloy 230 has higher

TABLE 7.13 High-Temperature Mechanical Properties of Alloy 602CA
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