Aluminum vs Stainless Steel for Custom Fabrication: A Buyer’s Guide
Your choice of aluminum or stainless steel for custom fabrication sets the weight, cost, service life, and performance of the finished part. Both metals cut cleanly, form accurately, and weld well. They part ways under load, in wet conditions, and on the shop floor. This guide shows where each metal wins and how your material choice moves the budget and the schedule. Klassen Custom Fabricating works with both every day in our 65,000 square foot Windsor facility, and these questions reach us on nearly every metal fabrication quote. How the Two Metals Differ Aluminum is light. Its density sits near 2.70 grams per cubic centimetre, roughly one third that of steel. The moment aluminum meets air, it grows a thin oxide skin that protects the surface below. Aluminum also has strong electrical conductivity, about 60 percent that of copper at one third of the weight. That combination suits enclosures, heat sinks, and electrical hardware. Stainless steel is an iron alloy holding at least 1...