MEDIUM ![]() | ![]() | |
| Name | Initial Graphics Exchange Specification | STEP |
| File extension | .igs, .iges | .stp, .step |
| Original software | ||
| Binary | ■ | |
| ASCII | ■ | ■ |
| Polygonal | ||
| NURBS | ■ | ■ |
| Solids | ||
| Smoothing groups | ■ | ■ |
| Textures, materials | ||
| Developer/Owner | U.S. National Bureau of Standards | ISO |
| Description | ||
| Specification | Download PDF | Download PDF |
| Format features | Universal open interchange NURBS-surfaces format. Along with STEP - one of the most popular | The basic format of the transfer surfaces between CAD-systems. See also IGES |
| Viewing software | Delcam Exchange 2012 (free), eDrawings (free) | Delcam Exchange 2012 (free), eDrawings (free) |