Guide: Material Selection for Custom CNC Machined Components

Material choice directly affects part strength, weight, corrosion resistance, machining difficulty and total cost. Many overseas buyers spend extra cost or encounter performance problems due to improper material selection. This guide helps you pick suitable materials for your custom CNC machined components.

Common Metal Materials for CNC Machining

Aluminum Alloy (6061 /7075)

Advantages: Lightweight, easy to machine, good thermal conductivity, supports anodizing. Widely used for automation fixtures, UAV structures, and electronic equipment housings.

Stainless Steel (304 & 316L)

Advantages: Excellent corrosion resistance, high tensile strength. Suitable for medical equipment, marine components and environmental testing devices.

Brass & Copper

Good electrical and thermal conductivity, easy precision machining. Mainly used for connectors, conductive terminals and heat conduction components.

Common Engineering Plastic Materials

PEEK

High temperature resistance, wear resistance and mechanical strength. Ideal for medical equipment and high-load precision parts.

POM & Nylon

Low friction coefficient, good toughness, widely used for gears, bushings and structural moving parts.

Acrylic & PC

High light transmittance, suitable for transparent fixtures, optical testing housings and visual inspection equipment.

Key Factors When Choosing Materials

1. Working environment: temperature, humidity, liquid corrosion
2. Mechanical requirements: load, impact, friction
3. Weight limitation requirements
4. Surface treatment and assembly demands
5. Project budget

If you are unsure which material fits your project, the engineering team at XAP-CNC can provide professional material suggestions after reviewing your drawings and application scenarios. We process all the above materials with stable precision up to ±0.005mm. Send your specifications for consultation.