The Complete CNC Machining Material Selection Guide
Choosing the right material for your CNC machining project is critical to success. This guide helps you navigate the selection process based on strength, weight, corrosion resistance, cost, and machinability.
Material Selection Quick Comparison
| Material | Strength | Weight | Corrosion Resistance | Machinability | Cost | Best For |
|---|---|---|---|---|---|---|
| 6061 Aluminum | Good | Very Light | Good | Excellent | Low | General purpose, prototypes |
| 7075 Aluminum | Very High | Light | Moderate | Good | Medium | Aerospace, high-stress |
| 304 Stainless | Good | Heavy | Excellent | Moderate | Medium | Food, medical, marine |
| 316 Stainless | Good | Heavy | Superior | Moderate | Medium-High | Chemical, marine, medical |
| Ti-6Al-4V (TC4) | Very High | Medium | Excellent | Challenging | High | Aerospace, medical implants |
| C360 Brass | Moderate | Heavy | Good | Excellent | Medium | Plumbing, electrical, decorative |
| Alloy Steel 4140 | High | Heavy | Moderate | Good | Low-Medium | Gears, shafts, structural |
| PEEK | High | Light | Excellent | Good | Very High | Medical, aerospace, semiconductor |
Selection Decision Matrix
Need lightweight + strong? → 7075 Aluminum or Titanium TC4
Need corrosion resistance + food safe? → 304 or 316 Stainless Steel
Need low cost + fast machining? → 6061 Aluminum or C360 Brass
Need highest strength? → Titanium TC4, 17-4PH, or 4140 Steel
Need electrical conductivity? → C1100 Copper or C360 Brass
Need high-temperature performance? → 310S Stainless, Inconel, or PEEK
Let Us Help You Choose
Our engineering team can recommend the optimal material for your specific application. Contact JRCNC for expert material selection guidance.
