What Makes Perforated Corten Steel Sheets Unique?

Perforated corten steel sheets are known for their distinctive appearance and functional benefits. The perforation patterns are designed with precision to create visually appealing surfaces while allowing improved ventilation and controlled light flow.

Perforated corten steel sheets

Because of their weathered and textured look, perforated corten steel is widely used in architectural and decorative projects such as façades, screening panels, partitions, garden features, art installations, and interior accents.

The combination of the natural rusted finish and custom perforation patterns delivers a visually striking and durable design solution.

How Much Do Corten Steel Perforated Panels Cost?

The pricing of corten perforated panels varies depending on factors such as:

Market conditions

Panel thickness and dimensions

Perforation pattern complexity

Surface finish and fabrication requirements

For accurate pricing, it is best to contact a supplier with detailed specifications such as thickness, hole type, open area percentage, and order quantity.

How to Install Perforated Corten Steel Sheets

Ensure the mounting surface is level and clean.

Use appropriate fasteners (such as exterior-grade screws or rivets) based on the structure and sheet thickness.

When installing multiple sheets, overlap edges slightly to minimize visible seams and reduce water penetration.

Apply sealant around joints where necessary to prevent moisture ingress.

Handle sheets carefully to avoid scratching or damaging the developing weathered surface layer.

Standard Specifications of Perforated Corten Steel Sheets

Gauge	Width	Length
22, 16, 11 gauge	48"	up to 120"

Available Services: Cutting, rolling, folding, welding
Forms: Flat panels, coil strips, roofing and cladding panels

Common Product Types

Perforated Corten Flat Sheets

Perforated Corten Facade / Cladding Panels

Corten Mesh Panels

Custom Patterned Sheets (round, slotted, hexagonal, decorative)

Standard Perforation Patterns

Gauge	Material	Hole Pattern	Open Area	Sheet Size
22 Gauge	A606-4	7/32" staggered, .127" round holes	30.5%	48" width x variable length
16 Gauge	A606-4	5/16" staggered, 3/16" round holes	37.56%	48" x 120"
11 Gauge	A606-4	1/4" round holes, 3/8" stagger	40.31%	48" x 120"

Also available in coil form for continuous production and custom fabrication.

Chemical Composition Comparison (Common Weathering Grades)

Grade	C (%)	Si (%)	Mn (%)	P (%)	S (%)	Cu (%)	Cr (%)	Ni (%)
ASTM A588 Gr.A	0.19	0.30–0.65	0.80–1.25	0.04	0.05	0.25–0.40	0.40–0.65	0.40
IRSM 41-97	0.10	0.28–0.72	0.25–0.45	0.07–0.11	0.030	0.30–0.39	0.30–0.50	0.20–0.49
Corten-A	0.12	0.25–0.75	0.20–0.50	0.07–0.15	0.030	0.25–0.55	0.50–1.25	0.65
ASTM A242 Type 1	0.15	0.25–0.40	1.00	0.15	0.05	0.20 min	–	–

Mechanical Properties

Grade	Yield Strength	Tensile Strength	Elongation
ASTM A588 Gr.A	≥345 MPa	≥485 MPa	≥21%
COR-TEN A	≥355 MPa	470–630 MPa	≥20%
ASTM A242 Type 1	≥345 MPa	≥480 MPa	≥16%

Advantages of Perforated Corten Steel Panels

Perforated Corten steel panels offer superior structural performance, with yield strength reaching 345–550 MPa, significantly higher than standard mild steel grades.

The perforations provide 15–60% open area, enhancing airflow, water drainage, and slip resistance, making them ideal for architectural walkways and outdoor platforms.

Corten steel is easy to weld, cut, bend, and perforate, supporting complex façade patterns and custom artistic designs. Once exposed to natural weather cycles, the material forms a stable protective rust layer within 3–12 months, reducing maintenance costs by up to 80% compared to regularly painted steel.

This evolving surface finish-from light rust to deep bronze-ensures a unique and lasting visual character, with a service life of 40–80+ years in most environments.

Typical Dimensions

Item	Specification
Thickness	0.5 mm – 10 mm
Width	0.9 – 1.5 m
Length	1.2 – 3.05 m
Hole Size	0.8 – 100 mm
Open Area	5% – 80%
Patterns	Staggered, Straight, Custom
Packaging	Waterproof wrapping + pallets or crates