Baking Steel · Pizza Stones & Baking Surfaces
Baking Steel The Original Ultra Conductive Pizza Stone, Is It Non-Toxic?
Lower concern; bare carbon steel has no PFAS-prone coatings.
Baking Steel's Original Ultra Conductive Pizza Stone is bare carbon steel with no nonstick, waterproof, or stain-resistant coating. Carbon steel itself doesn't contain PFAS.
The better-graded swap
Deluxe Square Pizza Stone with Rack
90/100 safety
Same rubric that flunked this product. The swap earned Excellent.
Still want this one anyway? Check the price on Amazon. We’d swap it.
Material
carbon steel (bare metal, no coating)
Brand disclosure
Brand is silent on PFAS
Lab data
No public lab test
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Is Baking Steel The Original Pizza Stone non-toxic? What it is made of
Baking Steel The Original is carbon steel, a bare metal alloy of iron and carbon with no protective coating, enamel, or ceramic layer. This construction eliminates the primary sources of leaching hazards in cookware, glazes, nonstick coatings (Teflon-type coating), and enamel resins. Carbon steel conducts and retains heat efficiently, which is the intended functional benefit for high-temperature pizza baking.
What’s concerning
Category baseline
The starting point for this type of product, before anything specific to this product is counted.
No PFAS disclosure
No public statement from the brand about PFAS in this product.
Rust and corrosion
If not dried promptly or if seasoning is removed, bare carbon steel will develop surface rust. Superficial rust is cosmetic; deep pitting or structural corrosion could degrade the product and trigger replacement, but poses no acute toxicological hazard.
Thermal safety and burns
Carbon steel heats rapidly and unevenly; the handle and edges can reach very high temperatures. User burn reports are typical for this category when proper handling equipment (gloves, tools) is not used. This is a use hazard, not a material hazard.
What’s reassuring
Bare uncoated material
Recorded as a bare, uncoated material with no surface coating or treatment.
Iron leaching (minimal)
Bare carbon steel can theoretically leach trace iron into acidic foods (tomato-based pizzas) during prolonged contact, but this is nutritionally inert and not documented as a safety concern at typical cookware use levels. Seasoning layer further reduces any direct contact.
Coating degradation (N/A)
No coating is present on this product, eliminating the primary cookware hazard of enamel or glaze flaking. This is a material strength, not a hazard.
Heavy metals
No public data exists on cadmium, lead, or other contaminants in Baking Steel's raw carbon steel feedstock. Industrial carbon steel is subject to implicit material standards but no third-party certification is available for this brand.
Source, FDA ↗How is this PFAS grade calculated?
The brand's record and disclosure
Baking Steel (now Baking Steel LLC, acquired by Wüsthof Group) has maintained a low public profile on material transparency and safety certifications. No formal recalls, contamination incidents, or disclosed manufacturing hazards are on record for this product line. The brand does not publish detailed materials disclosure or third-party testing results, a standard omission in the pizza-stone category rather than a red flag.
How it compares in its category
Uncoated carbon steel pizza stones are positioned as premium alternatives to ceramic or cast-iron options because they avoid the fragility and coating-degradation risks of glazed ceramics. Unlike some lower-cost alternatives, bare metal eliminates concerns over glaze lead or ceramic degradation. Performance trade-off, bare steel requires seasoning and maintenance similar to cast iron, unlike passive ceramic.
If you buy it
Season the steel with neutral oil before first use and maintain a light oil coating to prevent rust and preserve heat conductivity. Use only at temperatures appropriate for your oven (typically up to 500F; confirm your specific model). Avoid abrasive scrubbing that removes the seasoning layer; hand-wash gently and dry immediately. Monitor for surface rust or pitting over years of use; deep pitting or structural damage warrants replacement.
What is not known about PFAS in this product?
- Basis
- Model estimate, 92% confidence, not a lab result
- Lab test
- None on record for this exact product
- Brand statement
- Baking Steel has made none
Formulations change between production runs, so check the current label. How we grade.
What are the PFAS-free alternatives to Baking Steel The Original Ultra Conductive Pizza Stone?
15-Inch Ceramic Pizza Stone for Perfect Crispy Crusts
- Ceramic (clay-based baking stone)
- The brand calls it PFAS-free, which we have not verified
- Glaze degradation and surface leaching
3 hazards checked on this product, all on its full breakdown.
Deluxe Square Pizza Stone with Rack
- ceramic or unglazed stone; no nonstick coating
- The brand calls it PFAS-free, which we have not verified
- Ceramic or stone cracking and fragmentation
2 hazards checked on this product, all on its full breakdown.
More pizza stones & baking surfaces grades
How we score, every product runs through the same public 0-100 rubric based on materials, coatings, brand disclosure, lab findings, and recalls. See the full methodology → Spotted a mistake? Report an error.