METAL TYPES: Terne-Coated Stainless Steel 444

Timeless Character. Modern Stainless Performance.

The Character of Aged Metal. The Performance of Stainless Steel.

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Terne-Coated Stainless Steel 444 combines a ferritic stainless steel substrate with a lead-free tin alloy coating to deliver marine-grade corrosion resistance with the soft, muted appearance traditionally associated with terne metal.


Beginning as a silvery gray surface, the material naturally develops subtle blue-gray and pewter tones as it weathers, ultimately creating a soft matte patina with enduring architectural character.

A Surface That Evolves Naturally

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SILVERY GRAY

Initial Appearance

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SOFT MATTE PATINA

Natural Weathering

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Mature Appearance

Protective Green Verdigris Finish

Performance Beyond Appearance

Marine-Grade Protection
Type 444 stainless steel is engineered for demanding coastal and marine environments, helping resist pitting, crevice corrosion, and stress-corrosion cracking in chloride-rich atmospheres.


Terne-Coated Protection
The lead-free tin alloy coating provides an additional protective barrier while creating the distinctive muted architectural appearance.


Strength & Workability
The stainless substrate provides rigidity and thermal stability while remaining suitable for folding, seaming, soldering, welding, and architectural sheet-metal fabrication.

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Ideal Applications

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Standing-seam roofing

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Flat-lock systems

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Façades

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Soffits

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Historic preservation

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Custom residences

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Institutional architecture

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Coastal architecture

Why Architects & Builders Choose Terne-Coated Stainless Steel 444

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Soft, naturally weathering architectural appearance

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Marine-grade corrosion resistance

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Excellent performance in coastal environments

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Natural zinc-like aesthetic

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Ideal for heritage and contemporary architecture

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Minimal maintenance

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 Long lifecycle performance

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 Fully recyclable, lead-free coating

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