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1 4 Aluminum Plate
A 1/4 Aluminum Plate is a standard medium-thickness aluminum product with a fixed thickness of 6.35 mm and commonly available in sheet sizes such as 4×8 ft and 5×10 ft. Its combination of strength, versatility, and availability makes it one of the most widely used aluminum plate specifications in industrial and construction applications.
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A 1/4 Aluminum Plate refers to an aluminum sheet with a nominal thickness of 0.25 inch (6.35 mm). It is a commonly used medium-thickness aluminum plate in industrial manufacturing, construction, transportation, and mechanical fabrication due to its balance of strength, durability, and workability.
What Size Is a 1/4 Aluminum Plate?
The thickness of 1/4 inch aluminum plate is fixed at 6.35 mm, while the length and width vary depending on standard supply formats and project requirements.
Common Standard Sheet Sizes
| Thickness | Width | Length |
|---|---|---|
| 1/4" (6.35 mm) | 4 ft | 8 ft |
| 1/4" (6.35 mm) | 4 ft | 10 ft |
| 1/4" (6.35 mm) | 5 ft | 10 ft |
| 1/4" (6.35 mm) | 6 ft | 12 ft |
| 1/4" (6.35 mm) | 8 ft | 16 ft |
These standard sizes are widely used in stock inventory because they match common fabrication and engineering requirements.
Metric Conversion Reference
| Unit System | Size |
| Inches | 0.25 inch |
| Millimeters | 6.35 mm |
| Feet | Commonly 4×8 ft or 5×10 ft |
| Millimeters (Sheet) | 1219 × 2438 mm or 1524 × 3048 mm |
Common Characteristics of 1/4 Aluminum Plate
- Medium-thick structural aluminum material
- Good strength-to-weight ratio
- Suitable for machining, cutting, welding, and bending
- Widely available in alloys such as 5052, 5083, 6061, and 7075
- Used for both structural and industrial applications
Typical Applications
- Machine base plates and structural frames
- Marine components and shipbuilding parts
- Truck bodies and trailer floors
- Industrial equipment housings
- Construction support structures
- Tooling and fabrication components



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