3mm a3 300450mm 10 refers to a precision-cut sheet described by thickness, sheet size, and quantity. This format is common in industrial, engineering, and hobby applications where exact dimensions and reliable stock matter.
Below is a structured snapshot of core attributes, followed by keyword-focused sections that explain uses, specs, and practical considerations.
| Attribute | Value | Unit | Notes |
|---|---|---|---|
| Thickness | 3 | mm | Measured perpendicular to the large faces |
| Sheet Short Size (A3) | 297 | mm | ISO 216 short edge |
| Sheet Long Size (A3) | 420 | mm | ISO 216 long edge, often noted as 300450 in custom catalogs |
| Quantity | 10 | Pieces | Pack size for bulk handling |
| Typical Alloy | 3003 or 3004 | - | Common for formability and corrosion resistance |
| Temper | H14 or O | - | Condition influencing stiffness and springback |
Industrial Applications for 3mm Thickness
The 3mm thickness delivers a balance between rigidity and manageability. Fabricators favor this gauge for brackets, enclosures, and functional prototypes where structural integrity is required without excessive weight.
Typical Sectors
- Automotive trim and brackets
- Consumer appliance panels
- Architectural fixtures and signage
Material Alloy and Performance
3003 and 3004 alloys dominate this specification due to their formability and corrosion resistance. These alloys contain manganese, which enhances work-hardening without sacrificing ductility.
Key Properties
- Good bending behavior at 3mm
- Higher strength than pure aluminum
- Weldable with standard processes
Size Accuracy and Cutting Options
True 300450mm sheets align with extended A3 dimensions. Suppliers often cut oversized stock to this profile to reduce final trimming on site. Tolerance typically falls within ±1mm, depending on production method.
Cutting Methods
- Shearing for straight edges
- Waterjet for complex profiles
- Laser cutting for fine features
Handling and Packaging
Packing 10 pieces requires protective measures to prevent surface damage. Edge protectors and paper interleaving help maintain finish during storage and transport.
- Stack sheets with separation layers
- Use corner guards for transport
- Label bundles with material and temper
Design and Procurement Recommendations
Aligning material choice, cutting strategy, and handling procedures ensures that 3mm a3 300450mm 10 performs as expected in your workflow.
- Confirm alloy and temper for mechanical requirements
- Verify tolerances with the supplier before cutting
- Plan packaging to minimize on-site damage
- Document lot numbers for traceability
- Test sample bends to validate formability
FAQ
Reader questions
Is this sheet suitable for outdoor use without coating?
Yes, alloys like 3003 and 3004 provide decent natural corrosion resistance, but protective coatings can significantly extend outdoor durability in harsh environments.
Can it be bent to a tight radius at 3mm thickness?
Bending to a tight radius is possible, yet the minimum radius depends on temper and tooling. Consult bend allowance tables to avoid cracking on the outer fiber.
What is the standard surface finish on 3mm a3 sheets?
Mill finish is common, but custom polishing, anodizing, or painting are available based on application requirements and aesthetic demands.
How should I store a pack of 10 sheets to prevent warping?
Store flat on supported pallets in a dry environment, avoiding prolonged exposure to moisture and direct sunlight to control dimensional stability.