ASTM F1267
ASTM F1267 – Expanded Metal Specification
ASTM F1267 is the standard specification that covers the requirements for expanded metal, which is a sheet or plate that has been slit and stretched to form a regular pattern (often diamond-shaped) of openings.
This material is commonly used for grating, fencing, walkways, filtration, and reinforcement applications in industrial, architectural, and construction sectors.
ASTM F1267 applies to carbon steel, galvanized steel, stainless steel, aluminum, copper, and other ductile metals that can be expanded.
The specification classifies expanded metal based on type, style, and size.
Style Designation
The style of expanded metal is designated by a combination of numbers and letters, such as 3/4 #9 or 1/2 #13, representing:
Classification
| Type | Description |
|---|---|
| Type I – Regular (Standard) | Slit and expanded to form a raised surface with angled strands. Provides excellent grip and strength. |
| Type II – Flattened | Cold-rolled after expanding to produce a smooth, flat surface with uniform thickness. Ideal for decorative and architectural use. |
Material Options
- Carbon Steel (ASTM A1008 / A1011)
- Galvanized Steel (ASTM A653)
- Stainless Steel (ASTM A240 / A480)
- Aluminum (ASTM B209)
- Copper, Nickel, and Alloys (ASTM B36, B122, etc.)
General Requirements
- Sheets or coils shall be free from defects such as cracks, splits, or burrs.
- The expanded metal shall meet mechanical property and dimensional tolerances per ASTM F1267.
- Coating or surface treatment (such as galvanizing, painting, or anodizing) may be applied for corrosion resistance.
Typical Applications
- Industrial platforms & walkways
- Machine guards
- Security fencing
- Ventilation panels
- Filters & strainers
- Architectural facades & ceilings
- Reinforcement in concrete or plaster
Advantages
| Standard | Description |
|---|---|
| BS EN 10147 | Continuously hot-dip zinc-coated steel sheet and strip |
| JIS G3351 | Expanded metal – Japanese Industrial Standard |
| DIN 791 | Expanded metal sheets (German Standard) |
Available Finishes
- Mill finish
- Hot-dip galvanized
- Powder-coated
- Anodized (for aluminum)
- Painted or PVC-coated
