Ohio Flame · Installation
Natural Steel Finish vs Patina Finish: What Ohio Flame Actually Ships
Ohio Flame sells its fire pits in two visually different states of the same steel: Natural Steel (uncoated mill finish, light gray to brown) and Patina (weathered, darker, iron-oxide surface). This guide explains what each is at the metallurgy level and what to expect over the first six months of outdoor use.
By Ash · Updated November 10, 2026
What you need
Step by step
Expect color variation when the pit arrives
Natural Steel Finish is literally the finish of the steel as it comes out of the mill. Ohio Flame sources carbon-grade steel for strength and freedom from stress cracks or delaminations — not for color. Your bowl may arrive light gray, silver, brown, or dark gray. The product photo on the listing is representative, not identical. These colors are temporary — every bowl moves through the patina process at its own pace.
Understand what patina actually is
In metalwork, patina is the finish that forms on a metal's surface over time through natural weathering and oxidation. With Ohio Flame's uncoated steel, water (rain, moisture, humidity) and oxygen reacting with the iron produce iron oxide. The color starts orange-ish and deepens to dark brown with continued exposure and heat.
Know that patina protects, not degrades, the steel
The weathering happens at the surface only. Once the iron-oxide layer forms, it acts as a coating that slows further corrosion of the metal underneath. The bowl looks rusty but will not rust through, warp, or rot — Ohio Flame's lifetime warranty is written against exactly this behavior.
Don't paint it
Ohio Flame deliberately does not offer painted fire pits because no finish they've found survives fire temperatures. High-heat engine enamel exists, but it will burn off with use and require annual recoating. The brand's position: if you buy the pit, embrace the patina.
Common mistakes
- Expecting the pit to stay the color in the listing photo. The listed photo is a moment-in-time snapshot of one bowl. Yours will arrive similar but not identical, and both will evolve as they weather.
- Trying to "protect" Natural Steel with clear coat. Clear coats and sealants burn off at fire temperatures. The steel is DESIGNED to patina — fighting that just creates uneven surface damage.
Hands-on tips
- Expect the orange-rust phase to peak around 2-4 weeks of outdoor exposure, then darken toward brown over 2-3 months.
- Burning the pit speeds patina development because heat accelerates oxidation.
- Photograph your bowl at the four-week, eight-week, and six-month marks — it's a good proof of what Ohio Flame means by "the natural aging process."
Questions people ask
Will my Patina Finish bowl keep darkening after it arrives?
Yes. Patina is a continuous process. The bowl you receive is partway through; it will deepen in color as it continues to weather in your climate.
Does the patina process stain concrete or pavers?
Early-phase iron oxide can stain porous surfaces. Elevate the bowl on its pedestal (which comes welded to the bowl) and consider a non-porous paver underneath for the first 30-60 days of outdoor use.
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