Cast Iron Grate vs Arteflame Insert: The Truth | Arteflame

The Bottom Line: Carbon Steel vs. Cast Iron

Carbon steel inserts are the superior choice for modern outdoor cooking, offering the heat retention of cast iron without the fragility or high maintenance. While traditional cast iron grates provide excellent sear marks, they are prone to rust, cracking, and require laborious cleaning. A solid carbon steel insert (like the Arteflame) offers a unified heat surface for griddling and searing, seasons naturally to become non-stick, and lasts a lifetime with minimal upkeep.

Quick Comparison: Carbon Steel Insert vs. Cast Iron Grate

Use this table to quickly decide which grilling surface matches your cooking style.

Why Upgrade From Cast Iron to Carbon Steel?

Many grill owners assume cast iron is the gold standard for high-heat cooking. However, when replacing a grate on a Kamado or kettle grill, carbon steel inserts provide significant advantages in versatility and longevity. Unlike cast iron, which is porous and brittle, carbon steel is rolled smooth and incredibly tough.

Pro Tip: Carbon steel is physically softer than cast iron but structurally stronger. This means it absorbs heat faster and won't shatter if thermal shocked (splashed with cold water while hot) or dropped on a patio.

Does Carbon Steel Sear Better Than Cast Iron?

Yes, because surface area equals flavor. Cast iron grates only sear the food where the metal touches the meat, leaving the rest of the surface gray or pale. A solid carbon steel insert provides 100% surface contact. This triggers the Maillard reaction across the entire steak or burger, resulting in a deeper, richer flavor profile.

How Do Cleaning and Maintenance Compare?

The primary pain point for cast iron users is maintenance. Cast iron is porous; if the seasoning layer is damaged, moisture seeps in, causing rust from the inside out. Carbon steel is smoother and less porous.

Which is Easier to Clean?

Carbon steel wins on cleaning speed. Because the surface is solid and flat, you can use a scraper to push residue directly into the fire in seconds. You do not need wire brushes, which can shed dangerous bristles. Cast iron grates require tedious scrubbing between each bar to remove stuck-on food.

Pro Tip: Never use soap on either surface. For carbon steel, simply scrape it while hot, wipe it with a paper towel and a dab of oil, and you are done. The seasoning builds up layer by layer, turning the steel jet black and non-stick over time.

Frequently Asked Questions

Will a carbon steel insert rust?

Carbon steel can rust if left completely dry and exposed to elements, but it is much more forgiving than cast iron. A simple thin coat of oil after cooking prevents this, and surface rust can be easily scrubbed away with steel wool and re-seasoned in minutes.

Can I use metal spatulas on carbon steel?

Absolutely. Unlike Teflon or coated pans, carbon steel is designed for metal tools. You can scrape, chop, and cut directly on the insert without damaging the cooking performance.

Does food fall through the grill?

No. One of the biggest advantages of a solid carbon steel insert is that vegetables, shrimp, and bacon stay on the cooking surface. You get the smoky flavor of the fire without losing food to the coals.