Specifying the Density of a Part
A part contains one or more materials. It always contains the default material PTC_SYSTEM_MTRL_PROPS. You can also add materials from the library.
The density parameter for any material is PTC_MASS_DENSITY. When you edit the density of a material, the value of the parameter PTC_MASS_DENSITY is updated. To learn how to change the material density, go to About Working with Mass Property Parameters.
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Usually, you change the material density when there is no material added from the library and you want to define the density of the default material.
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For a single material part, you can use the legacy parameter MP_DENSITY. However, we recommend that you use the parameter PTC_MASS_DENSITY, instead of the legacy parameter MP_DENSITY.
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The parts created in Creo Parametric 6.0 and earlier may contain relations that use the legacy parameter MP_DENSITY. You can still use these relations if the part has only one material.
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