Statistical Model for the Mechanical Properties of Al-Cu-Mg-Ag Alloys at High Temperatures

Table 12

Model predicted values versus measured values for validating alloy (Al-3Cu-0.5Mg-0.3Ag) for the high-temperature study.

	Yield strength (MPa)			Ultimate tensile strength (MPa)
	Measured	Predicted	Relative % error	Measured	Predicted	Relative % error
Underaged (190°C)	200	236	15.3%	239	248	3.6%
Peak-aged (190°C)	240	236	−1.7%	245	292	16.1%
Underaged (250°C)	165	202	18.3%	173	190	9%
Peak-aged (250°C)	160	202	20.8%	173	234	26%