Define design properties for analysis parts
You can define design properties for individual analysis parts. Design properties are properties which can vary according to the design code and the material of the part (for example, design settings, factors, and limits).
The properties you see when you first open the Design tab in an analysis part properties dialog box are the properties that apply to the entire analysis model you have selected in the Analysis & Design Models dialog box.
You can modify the design properties of specific analysis parts using the appropriate analysis part properties dialog boxes. When you change a value or select an option in the Value column, the check box in the Use default column is cleared indicating that the analysis model properties are not in use for this particular analysis part and design property.
If an analysis model contains parts with different material grades, define the most common material grade using the analysis model properties. Then change the material grade of specific parts in the analysis part properties.