| Aspect | Metal 3D Printing | Selective Laser Melting (SLM) |
|---|---|---|
| Process | General term for various additive manufacturing techniques for metals | A specific type of metal 3D printing using a laser to fully melt powder |
| Technology | Includes various methods like SLM, DMLS, EBM, etc. | Specifically uses a high-powered laser to melt and fuse metal powder |
| Material Types | Wide range of metals and alloys | Mainly metals and alloys like stainless steel, titanium, and aluminum |
| Precision | Varies depending on the specific 3D printing technology | High precision with fine feature resolution |
| Surface Finish | Varies, generally requires post-processing for smooth finish | Often requires post-processing to improve surface finish |
| Mechanical Properties | Varies, dependent on technology and materials used | Produces dense parts with good mechanical properties |
| Applications | Prototyping, low-volume production, custom parts | High-performance components in aerospace, medical, and automotive industries |
| Build Speed | Varies by technology and machine | Relatively slower due to detailed melting process |
| Cost | Varies widely depending on the technology and material | Generally high due to precision and equipment cost |
| Support Structures | Often required for complex geometries | Necessary to support parts during the build process |
| Layer Thickness | Varies, typically between 20-100 microns | Usually around 20-50 microns for high detail |
| Energy Source | Can use lasers, electron beams, or other energy sources | Uses a high-powered laser |
Conclusion: SLM is a specific type of metal 3D printing known for producing high-precision, high-strength parts, making it ideal for demanding applications, whereas metal 3D printing encompasses a broader range of techniques and applications.