By Ruijin CNC作者：锐金峰汇Sep 02, 20262026年9月2日Material材料
Aluminum is the most widely machined metal — light, strong, corrosion-resistant and highly machinable. Choosing the right grade and finish is the difference between a good part and a great one.
Aluminum 6061/6063 alloys dominate CNC work for their excellent strength-to-weight and machinability.6061/6063 铝合金因强度重量比与可加工性，是 CNC 的主流材料。
Choosing the Right Grade
6061 offers the best balance of strength, machinability and cost for general parts. 7075 provides aerospace-grade strength but costs more. 5052 and 6063 suit sheet forming and extrusions respectively.
Machinability & Speed
Aluminum cuts fast with excellent chip control, so cycle times are short and tool life long. This makes it the most economical metal to machine at volume.
Aluminum parts accept anodizing, polishing and brushed finishes — perfect for consumer-grade aesthetics.铝件可接受阳极氧化、抛光、拉丝等表面处理，契合消费级外观。
Surface Finishes
Anodizing (clear, colored or hard) is the most common finish, improving corrosion resistance and appearance. Other options include bead blasting, brushing, powder coating and polishing.
Design Rules for Aluminum
Maintain consistent wall thickness, use generous internal radii, and avoid sharp internal corners to reduce stress and tool wear. Keep pocket depth-to-width ratios within recommended limits.
High spindle RPM (6,000–12,000) and aggressive feed rates make aluminum faster to machine than steel.高主轴转速（6,000–12,000）与大进给量让铝加工比钢更快。
Common Applications
Aluminum is everywhere — smartphone and laptop housings, heat sinks, audio panels, UAV frames, camera bodies and automotive lightweight parts.
Need a aluminum part? Send your drawing for a free DFM review and a quote within 24 hours.
铝是最广泛使用的机加工金属——轻、强、耐腐蚀且易加工。选对牌号与表面处理，是决定零件好坏的关键。
Aluminum 6061/6063 alloys dominate CNC work for their excellent strength-to-weight and machinability.6061/6063 铝合金因强度重量比与可加工性，是 CNC 的主流材料。
