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STEP Model: AP-203 or AP-214?

By Joeyao Chou on 21 Apr 06:31 3 answers 8326 views 0 comments

I found that there are almost every model on this site has STEP format, which is a general and universal CAD format.
But when I try to import these STEP model into Altium Designer as 3D Body, Error might occur.
If the STEP file is in format AP-203, then the color will be lost, and in Altium Designer I can see no color except white on the 3D Body.
If the STEP file is in format AP-214, then the color will be reserved, and in Altium Designer I can see exact the model just like the reference rendering on this site.

I searched the Internet to prove my thought and yes,
AP-203 format STEP will cause color loss.
So I wish contributors can offer AP-214 format STEP file, instead of AP-203.

3 answers

  • saad mehmood
    saad mehmood over 3 years ago

    AP203 defines the geometry, topology, and configuration management data of solid models for mechanical parts and assemblies. This file type does not manage Colors and Layers.
    AP214 has everything a AP203 file includes, but adds colors, layers, geometric dimensioning and tolerance, and design intent. AP214 is considered an extension of AP203.

  • saad mehmood
    saad mehmood over 3 years ago

    The original intent of STEP was to publish one integrated data-model for all life cycle aspects. But due to the complexity, different groups of developers and different speed in the development processes, the splitting into several APs was needed. But this splitting made it difficult to ensure that APs are interoperable in overlapping areas. Main areas of harmonization are:
    AP 214 and 203 in the area of 3D mechanical design. AP 214 took over all of the functionality of the earlier AP 203 edition and then extending the capabilities significantly. The second edition of AP 203 (published in 2011) took over bigger parts of AP 214 by adding again new functionality. The upcoming AP 242 will formally replace AP 203, 214 and other mechanical design APs
    AP 201, 202, 212, 214, 221 and now AP 203 ed 2 for technical drawings with extension in AP 212 and 221 for schematic functionality
    AP 214, 224 and 238 for machining features.
    AP 203ed2, 210, 214, 224, 238 for Geometric dimensioning and tolerancing(source

  • Sif sadaoui
    Sif sadaoui 8 months ago

    Hello;
    I want to extract a SPEP file of a part with their GD&T specification, when I look the Step file, I don’t find the part that indicate specifications, there is just topology and geometry information. However, the AP203 edition 2 includes geometric and dimensioning and tolerance.
    I am using CATIA V5R21 as CAD software.
    I do not know where the problem is. Can someone help me?

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