Metal 3D Printing vs. Selective Laser Melting (SLM)

AspectMetal 3D PrintingSelective Laser Melting (SLM)
ProcessGeneral term for various additive manufacturing techniques for metalsA specific type of metal 3D printing using a laser to fully melt powder
TechnologyIncludes various methods like SLM, DMLS, EBM, etc.Specifically uses a high-powered laser to melt and fuse metal powder
Material TypesWide range of metals and alloysMainly metals and alloys like stainless steel, titanium, and aluminum
PrecisionVaries depending on the specific 3D printing technologyHigh precision with fine feature resolution
Surface FinishVaries, generally requires post-processing for smooth finishOften requires post-processing to improve surface finish
Mechanical PropertiesVaries, dependent on technology and materials usedProduces dense parts with good mechanical properties
ApplicationsPrototyping, low-volume production, custom partsHigh-performance components in aerospace, medical, and automotive industries
Build SpeedVaries by technology and machineRelatively slower due to detailed melting process
CostVaries widely depending on the technology and materialGenerally high due to precision and equipment cost
Support StructuresOften required for complex geometriesNecessary to support parts during the build process
Layer ThicknessVaries, typically between 20-100 micronsUsually around 20-50 microns for high detail
Energy SourceCan use lasers, electron beams, or other energy sourcesUses 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.

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