Dassault CATIA V5/V6 (.CATProduct) to STEP AP242 Assembly Converter
Tier-1 automotive suppliers and aerospace sub-contractors frequently receive complex CATIA V5/V6 assemblies (.CATProduct) from OEMs. Without multi-thousand-dollar CATIA licensing, downstream tooling and CNC shops cannot extract clean B-Rep solids, check clearances, or program 5-axis toolpaths.
CATIA CATProduct to STEP Converter Studio
Configure precision tolerances, inspect mathematical boundary attributes, and dispatch to verified offline & cloud conversion engines.
Drag and drop your CATProduct file here
or click to browse local files (Supports up to 500MB)
Confidential IP & Safety Warning
Ensure the CATProduct is saved in 'Design Mode' rather than 'Visualization Mode (CGR)'. Visualization mode only contains faceted triangles, which will fail to export as true mathematical NURBS solids in STEP.
CAD Exchanger Cloud & Desktop
The gold standard for commercial CAD interop. When you need guaranteed watertight meshes or exact B-Rep topology.
DWG FastView Cloud 3D Engine● Verified Cloud Engine
DWG FastView delivers high-speed, industrial-grade 2D/3D CAD viewing, multi-format conversion, and cross-platform markup. Use DWG FastView for zero-install browser processing on Web & Mobile, or launch our verified offline and cloud partner tools below for specialized format transformations.
Curated CATIA CATProduct to STEP Converter Benchmark Tools
Evaluated across geometric fidelity, corporate data privacy, and batch processing capabilities.
CAD Exchanger Cloud & Desktop
Free Tier / Commercial SubscriptionDatakit CrossManager (Aerospace Standard)
Commercial Enterprise LicenseDWG FastView Cloud 3D (Official Sponsor)
Free Cloud CAD / 3D Converter & Web ViewerFreeCAD (Offline Parametric Mesher)
100% Free & Open SourceTechnical Guide: Preventing Geometry Failures during CATProduct to STEP Conversion
Follow these verified CAD administrator standards to avoid broken surfaces, scaling drift, and corrupted toolpaths.
1. Resolving CATIA Cache Mode (CGR)
Make sure all linked CATParts have their full geometric design data loaded so the converter extracts mathematical B-Rep surfaces rather than faceted polygon shells.
2. Vehicle Grid Reference vs Local Origin
Automotive assemblies are positioned in absolute vehicle carline coordinates. Verify whether your tooling software expects global aircraft/vehicle coordinates or a local part centroid.
3. Preserving Fastener Hardware & Catalog Parts
Ensure all standard catalog fasteners and brackets are packaged alongside the primary structural CATParts before uploading.
4. Multi-body Part Merging vs Multi-Instance Assemblies
CATIA supports both multi-body parts and product instances. Choose whether to output a single multi-body solid or a federated assembly tree.
CATProduct vs STEP Technical Matrix
Compare kernel topology, color & appearance capabilities, and target manufacturing workflows.
| Specification | CATProduct (Source) | STEP / STP (Target) |
|---|---|---|
| Official Name | CATIA V5/V6 Product Assembly | ISO 10303 Standard for Exchange of Product Data |
| Category | Enterprise Aeromarket Assembly | Solid B-Rep / Surface |
| Geometric Nature | Hierarchical product structure linking external .CATPart components with assembly constraints, joint kinematics, and vehicle coordinate systems | Mathematical Boundary Representation (B-Rep) solid geometry with exact curve definitions |
| Colors & Materials | Subsystem color codes, layer filters, and visual clearance overlays | AP214 / AP242 support basic body color & face styles |
| 3D PMI & Tolerancing | 3D Functional Tolerancing & Annotation (FT&A) and GD&T datum systems | AP242 supports 3D GD&T & Product Manufacturing Information |
| Primary Ecosystem | CATIA V5, CATIA 3DEXPERIENCE, DELMIA, ENOVIA | SolidWorks, CATIA, Siemens NX, PTC Creo, Autodesk Inventor, FreeCAD |
CATIA CATProduct to STEP Converter FAQs
This occurs when CATIA was in 'Visualization Mode' (Cache Mode) when saving, which creates CGR lightweight facets. The converter needs access to the underlying exact CATPart geometry.