Choosing the Right Material for Precision CNC Projects
At BestPro, selecting the right material is just as critical as precision machining itself. Whether it’s for strength, weight reduction, corrosion resistance, or thermal performance, each CNC project begins with the right base material.
Below is an overview of commonly used materials in CNC machining and their key properties:
Common CNC Machining Materials Overview
| Material Category | Common Grades | Key Properties | Typical Applications |
|---|---|---|---|
| Aluminum Alloys | 6061, 7075, 2024 | Lightweight, corrosion resistant, excellent machinability | Aerospace, automotive, drone frames, enclosures |
| Stainless Steel | 304, 316, 303, 17-4PH | High corrosion resistance, clean surface finish, strong | Medical, marine, food processing, structural parts |
| Carbon & Alloy Steel | 1018, 1045, 4140, 4340 | Strong, tough, heat-treatable | Shafts, gears, automotive and machinery components |
| Tool Steel | D2, O1, A2 | Wear-resistant, extremely hard, good dimensional stability | Molds, dies, cutting tools, high-stress parts |
| Titanium | Grade 2, Grade 5 (Ti-6Al-4V) | Lightweight, high strength, corrosion resistant, biocompatible | Aerospace, medical implants, high-performance parts |
| Engineering Plastics | Delrin (POM), Nylon, PTFE, PEEK | Insulating, low-friction, chemical resistant, lightweight | Bushings, insulators, enclosures, food-grade parts |
| Brass / Copper | C360, C110, etc. | Excellent conductivity, corrosion resistant, aesthetic surface | Electrical parts, fittings, decorative components |
