{"id":7274,"date":"2026-01-24T17:11:00","date_gmt":"2026-01-24T09:11:00","guid":{"rendered":"https:\/\/www.jstindustry.com\/?p=7274"},"modified":"2026-01-28T17:12:57","modified_gmt":"2026-01-28T09:12:57","slug":"5-most-common-materials-for-cnc-milled-parts","status":"publish","type":"post","link":"https:\/\/www.jstindustry.com\/it\/5-most-common-materials-for-cnc-milled-parts.html","title":{"rendered":"5 Most Common Materials For CNC Milled Parts"},"content":{"rendered":"
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Choosing the right material is probably one of the most consequential decisions in any machining project. Get it wrong and even perfect programming won’t save the part. Get it right and everything downstream \u2014 machining time, surface finish, durability, cost \u2014 tends to fall into place more smoothly.<\/p>

This guide covers the five materials that show up most frequently when producing CNC milled parts<\/strong><\/a>. Each has its own personality on the machine, its own strengths, and its own quirks. Understanding these differences helps with specification decisions, supplier conversations, and realistic expectations about what’s achievable.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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Comparing Materials for CNC Milled Parts at a Glance<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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Materiale<\/b><\/strong><\/td>\n Lavorabilit\u00e0<\/b><\/strong><\/td>\n La forza<\/b><\/strong><\/td>\n Peso<\/b><\/strong><\/td>\n Resistenza alla corrosione<\/b><\/strong><\/td>\n Relative Cost<\/b><\/strong><\/td>\n <\/tr>\n
Alluminio<\/td>\n Eccellente<\/td>\n Moderato<\/td>\n Basso<\/td>\n Buono<\/td>\n Low-Medium<\/td>\n <\/tr>\n
Acciaio<\/td>\n Moderato<\/td>\n Alto<\/td>\n Alto<\/td>\n Variable<\/td>\n Medio<\/td>\n <\/tr>\n
Acciaio inox<\/td>\n Challenging<\/td>\n Alto<\/td>\n Alto<\/td>\n Eccellente<\/td>\n Medium-High<\/td>\n <\/tr>\n
Ottone<\/td>\n Eccellente<\/td>\n Moderato<\/td>\n Medio<\/td>\n Buono<\/td>\n Medio<\/td>\n <\/tr>\n
Titanio<\/td>\n Difficult<\/td>\n Very High<\/td>\n Basso<\/td>\n Eccellente<\/td>\n Alto<\/td>\n <\/tr>\n
Engineering Plastics<\/td>\n Eccellente<\/td>\n Low-Moderate<\/td>\n Very Low<\/td>\n Eccellente<\/td>\n Variable<\/td>\n <\/tr>\n <\/tbody>\n <\/table>\n<\/div>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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This table simplifies things considerably \u2014 real-world alloy selection involves way more nuance \u2014 but it gives a useful starting point for comparison.<\/p>\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t

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1. Aluminum: The Go-To Choice for CNC Milled Parts<\/h2>\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t
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If there’s a default material in the milling world, aluminum is probably it. Walk into almost any machine shop and aluminum chips will be somewhere on the floor. The reasons are pretty straightforward.<\/p>

Aluminum machines fast. Like, really fast compared to most alternatives. Spindle speeds can run high, feed rates can push aggressively, and the material just cooperates. Tool life stays reasonable, chips evacuate cleanly, and surface finishes come out looking good without heroic effort.<\/p>

The most commonly milled aluminum alloys include:<\/p>