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Steel vs. Aluminum: What to Use and When in Your Overland Build

Steel vs. Aluminum: What to Use and When in Your Overland Build

Posted by Hot Metal Fab | Loomis, CA

When it comes to outfitting your rig, choosing between steel and aluminum isn't just about weight — it’s about purpose, performance, and what kind of abuse your gear is going to take.

At Hot Metal Fab, we work with both steel and aluminum every day. Here’s a quick breakdown to help you decide which metal belongs where on your overland setup.


When to Use Steel

Steel is the go-to for strength, durability, and impact resistance. It’s heavier, but when you’re sliding over rocks or dealing with real-world trail punishment, nothing beats it.

Best for:

  • Rock sliders (especially weld-on or frame-mounted)

  • Bumpers

  • Recovery points and brackets

  • Heavy-duty bed stiffeners

  • Armor and skids

Why steel?
Because when things go sideways, steel shrugs it off. If you're building for serious trail use, weight isn't the priority — strength is.


When to Use Aluminum

Aluminum is the lightweight champ. It resists rust, doesn’t weigh down your rig, and still brings solid strength — especially when you know how to brace and weld it right (which we do).

Best for:

  • Modular bed racks

  • Roof platforms

  • Storage panels and interior systems

  • Light-duty racks

  • Cosmetic parts and trim

Why aluminum?
It keeps your center of gravity low and won’t corrode. For long-distance trips or daily-driver rigs, aluminum helps keep things nimble without sacrificing functionality.


Our Take: Build Smart. Use Both.

There’s no need to pick one side — the best builds use both metals, depending on where and how they’re used. That’s the beauty of working with a shop like Hot Metal Fab — we design everything in-house, and we build with the right material for the job, not just what’s easy to work with.


Need help planning your setup?
Give us a shout. Whether it’s a fully-welded steel slider or a modular aluminum rack, we’ll help you get it dialed.