Dassault CATIA (.CATPart) to STEP (STP AP242/AP214) Solid Converter
Aerospace primes (Boeing, Airbus) and automotive OEMs (Tesla, BYD) mandate CATIA for vehicle body design. However, Tier 2 and Tier 3 machining shops typically run SolidWorks or Mastercam. CATIA licenses cost tens of thousands of dollars per seat. Online conversion from CATPart to STEP unlocks multi-tier manufacturing collaboration at minimal cost.
CATIA CATPart to STEP Converter Studio
Configure precision tolerances, inspect mathematical boundary attributes, and dispatch to verified offline & cloud conversion engines.
Drag and drop your CATPart file here
or click to browse local files (Supports up to 500MB)
Confidential IP & Safety Warning
Aerospace CATPart models frequently incorporate proprietary aerodynamic wing profiles and classified structural ribbing. Defense suppliers must ensure all cloud conversion pipelines comply with ITAR / EAR export regulations or execute conversions using 100% offline local tools.
Datakit CrossManager (Aerospace Standard)
The gold standard for aerospace defense contractors and automotive tier-1 suppliers.
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 CATPart to STEP Converter Benchmark Tools
Evaluated across geometric fidelity, corporate data privacy, and batch processing capabilities.
Datakit CrossManager (Aerospace Standard)
Commercial Enterprise LicenseCAD Exchanger Cloud & Desktop
Free Tier / Commercial SubscriptionFreeCAD (Offline Parametric Mesher)
100% Free & Open SourceTechnical Guide: Preventing Geometry Failures during CATPart to STEP Conversion
Follow these verified CAD administrator standards to avoid broken surfaces, scaling drift, and corrupted toolpaths.
Preserve CATIA Class-A Freeform Curvature
CATIA utilizes Dassault’s proprietary CGM kernel with G2/G3 surface continuity. When converting to STEP, select double-precision float limits to avoid slight chordal edge tears along complex aerodynamic blend fillets.
Capture 3D FTA (Functional Tolerancing & Annotation)
Modern aerospace drawing packages omit 2D blueprints, relying on 3D annotations inside CATIA. Target STEP AP242 to ensure geometric dimensioning and datum references survive the conversion.
Resolve Multi-Body Part Geometrical Sets
CATPart documents organize surface sketches in Geometrical Sets and solid bodies in PartBodies. Verify that your converter exports both active solid bodies and reference tooling surfaces.
CATPart vs STEP Technical Matrix
Compare kernel topology, color & appearance capabilities, and target manufacturing workflows.
| Specification | CATPart (Source) | STEP / STP (Target) |
|---|---|---|
| Official Name | CATIA V5 / V6 Part Document | ISO 10303 Standard for Exchange of Product Data |
| Category | High-End Aerospace/Automotive MCAD | Solid B-Rep / Surface |
| Geometric Nature | Convergence Geometric Modeler (CGM) hybrid parametric solid, surface, and wireframe container | Mathematical Boundary Representation (B-Rep) solid geometry with exact curve definitions |
| Colors & Materials | Body colors, face styles, and material physics | AP214 / AP242 support basic body color & face styles |
| 3D PMI & Tolerancing | 3D Functional Tolerancing & Annotation (FTA / MBD) | 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 CATPart to STEP Converter FAQs
Yes. You can use specialized standalone converters like Datakit CrossManager or cloud interop engines like CAD Exchanger to translate CATPart files without purchasing a CATIA license.