Antique Copper Sheet Metal

Antique copper stainless steel reproduces the deep, reddish-brown patina copper develops with age — dark recesses, warm reddish-brown highlights, and the kind of uneven tonal drift you get from years of oxidation, without the greening that copper eventually takes on outdoors. The base material is stainless steel, not solid copper. We supply this patina copper sheet metal finish across grades 201, 304, 316 and 430.

Antiuqe Copper Sheet

How the Patina Effect Is Made

The process starts with a base surface texture — polished, hairline, mirror, vibration, embossed, or etched — then goes through PVD coating or water plating to build the copper tone. Oxidation is worked in unevenly on purpose: recesses darken toward a deep red-brown, raised areas stay warmer and lighter, producing the same kind of tonal drift a patinated copper sheet develops naturally over years of handling.

How far this process is taken sets the final depth. A shorter process stays closer to copper's natural warm red-orange, with light variation. Pushed further, it moves into a darker, more weathered reddish-brown with stronger contrast between high and low points. Because this is a range rather than a fixed recipe, we can match it to a specific sample or reference.

Antique Copper Finish Metal Sheet Stainless Steel Sheet

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Surface Textures of Antique Copper Panels

The patina effect sits on two categories of base surface — flat mechanical finishes and raised relief textures.

Flat Finishes — Hairline, Vibration, Mirror

These finishes carry the wear copper accumulates through handling and time. Hairline and vibration use fine mechanical scratching to echo years of surface contact, while mirror carries the patina coloring over a polished base for a tarnished, clouded look. The coloring process can also produce irregular, mottled patterns directly on the surface, closer to how copper naturally oxidizes outdoors.

    
    Sheet Type
  
Surface type

      Flat Finish Sheet
    
      Raised Textures Sheet

Raised Textures — Embossed, Etched

These add physical depth rather than just surface color. Embossed and etched textures reproduce the pitting and surface breakdown copper develops over long exposure — the raised and recessed areas pick up the coloring differently, so the patina look comes from the texture itself, not a layer sitting on top of it.

Product Details

Design & Patterns

Sizes & Grades

See more antique finishes: Copper, Bronze & Copper Green →

Explore ALL Aged Finish→

Standard Sizes & Thickness

Sheet Thickness

0.3mm – 3.0mm (30–11 Gauge)

Recommended Decorative Range

0.5mm – 2.0mm

Metric Sizes (Width x Length)

1000x2000, 1219x2438, 1219x3048, 1500x3000 mm

Imperial Sizes (Width x Length)

3.28x6.56, 4.00x8.00, 4.00x10.00, 4.92x9.84 ft

Coil Width Options

1000mm / 1219mm / 1500mm

Coil Weight Range

3–5 Tons (Custom Slitting Available)

Custom Sizing

Coil slitting & cut-to-length options available

Material & Processing Data

Substrate Options

AISI 201, 304, 304L, 316, 316L, 430

Surface

Aged Finish

Coloring Methods

Aged Copper PVD Coating / Water Plating

Standard Lead Time

7–10 Days (In Stock) / 25–30 Days (Custom)

Forward / Bulk Orders

30–45 Days

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Cut to Size & Custom Aging

Every antique copper sheet is cut to your project's dimensions. The oxidation depth and hand-applied mottling can be adjusted on request — giving you control over how light, dark, or heavily weathered the patina copper sheet reads.

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Application

Antique copper carries strong associations most other metals don't — weathered copper roofing, aged copper cookware, the patina on old copper fixtures. That history makes it a natural fit for spaces that want to lean into warmth, craft, and material authenticity rather than a polished, contemporary look.

Feature & Cladding Applications:

Range hoods and kitchen feature walls
Roofline-inspired facade accents and canopy cladding
Fireplace surrounds and hearths
Elevator interior cladding
Reception and lobby feature panels

Antique copper also shows up often in hospitality spaces built around a craft or artisanal identity — the kind of warmth associated with distilleries, wine cellars, and copper-forward bar design:

Bar & Hospitality Applications:

Bar fronts and back-bar panels
Wine cellar and tasting room accents
Custom range hood cladding
Counter panels and serving surfaces

Our antique copper sheet metal can be bent or punched to match your project's mounting requirements.

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Aged copper etched stainless steel accent wall with track lighting in modern living room

See Aged Metal Finish in Real Projects

From facades to ceilings, decorative panels, and cabinetry — see how our aged metal finishes look once installed.

View Project Cases →

Black Bronze hammered stainless steel architectural facade cladding on contemporary Chinese building (2)

Black Bronze hammered stainless steel full bathroom wall cladding with round backlit mirror

Want a lighter copper color finish?

Explore Copper Finish

About the Antique Copper Process

Stainless steel starts as a grey-silver base. Different combinations of polishing and oxidation coloring produce different depths of copper patina on that same base — which means every antique copper sheet comes out as a one-of-a-kind result.

Our production process:

Start with the customer's specified stainless steel grade (201 / 304 / 316 / 430) as the base
Apply oxidation coloring to build the copper patina tone
Create the aged texture using one of two methods:
- Etching — builds a raised, tactile pattern beneath the patina for genuine dimensional depth
- Standard process — produces a flat, weathered patina on the surface
Hand-finish the surface to refine the mottled, aged character
Apply a protective clear coat to lock in the finish and slow further oxidation

FAQS

Is an antique copper panel made of solid copper?

No. The base material is stainless steel (201/304/316/430); the copper appearance comes from an oxidation coloring process and hand-applied aging technique on the surface. This gives you the patina copper look with the corrosion resistance and durability of stainless steel.

What's the difference between this and your Green Copper finish?

This antique copper finish stays in the red-brown to dark brown range — the early-to-mid stage of copper's natural patina. Our Green Copper finish reproduces the later green oxidation stage. See our Green Copper page if that's the look you need.

Does the antique copper finish have a raised texture, or is it flat?

Both are available. Our etched finish builds a raised, tactile pattern beneath the patina for a genuinely dimensional feel, while our standard process produces a flat, weathered patina. Let us know your preference when ordering.

How do you keep the pattern consistent across a large installation?

We match the pattern to your project drawings, or build a rendering based on the actual surface you're installing on before production. This lets us plan how the mottling and tonal variation should flow across multiple panels, so the finished wall or cladding reads as one coordinated surface rather than mismatched individual sheets.

How is an antique copper panel installed?

Antique copper sheets can be installed using screw fixing or adhesive bonding, depending on the application. Handle with clean gloves during transport to avoid fingerprints and uneven oxidation, and avoid dropping or impacting panels to protect the finish. Contact our team for help with installation methods or sizing.

What can damage the protective coating?

The clear coat can wear from harsh chemicals, frequent cleaning, prolonged heat exposure, or improper handling. Careful daily use extends panel life, and the coating can be reapplied if it shows wear.

How do I clean an antique copper sheet?

Most panels need only minimal routine care. Clean with warm soapy water and a microfiber cloth — no additional maintenance is required.

Why project buyers work with Sanmei.

Material-driven, engineering-supported, execution-ready. One supplier from the mill to your site.

Source from leading partner mills

Base coil from Lisco, Tisco, Jisco, Posco PZSS, Yongjin and Hongwang, each batch with its Mill Test Report.

Our mill partners

Finish in-house

PVD, water plating and surface finishing under one roof at our Foshan facility.

Decorative finishes

Engineer and fabricate

Our engineers review drawings so profiles and panels can be made and installed.

Architectural metal works

Protect and ship

Film matched to laser cutting or stamping, and crates or steel frames packed for sea freight.

Packing and filming

Technical questions about grades, finishes or tolerances?

Technical guide

Tell us about your project.

Send a drawing, a reference photo or just the grade and size. Our team replies with material advice, finish options, samples and a quote.

What helps us answer fastest

Drawing, sketch or reference photo

Grade and thickness, if you know them

Quantity and delivery location

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Samples and small batches are welcome.

All about Our Decorative Stainless Steel Sheets

Antique Copper Sheet Metal

How the Patina Effect Is Made

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Surface Textures of Antique Copper Panels