Aluminium Plate (Grades 5052, 5083, 6061-T651) Factory Price
Industrial Aluminium Alloy Plates (Full Spec Engineering Grades)
- Grade 5052: Excellent formability & saltwater resistance (Automotive & Cabinetry)
- Grade 5083 (Marine): Superior strength & weldability (Shipbuilding & Pressure Vessels)
- Grade 6061-T651: Stress-relieved for warp-free CNC machining (Molds & Machinery Parts)
- Processing Services: Thicknesses from 1.0 to 150.0+ mm, with custom CNC Plasma and Laser cutting
Engineered for low weight, high tensile strength, and extended tooling life. Mill Test Certificates (MTC) included.
Industrial Material
An Engineer's Guide to Selecting the Right Aluminium Alloy Grade
In high-precision CNC machining, mold-making (Tool & Die), and marine vessel fabrication, selecting the correct aluminium alloy is critical. A common issue faced by machinists is "plate warping during surface milling" or "long, sticky chips tangling around cutting tools." These problems almost always stem from selecting the incorrect alloy grade or the wrong thermal temper for the application.
At Trinity Dynamic, we offer a metallurgical breakdown of the industry's three most popular heavy-duty aluminium plates, helping your engineering and procurement teams optimize manufacturing costs while minimizing material defect rates:
- Grade 5052 (Al-Mg): The most balanced general-purpose alloy. It offers moderate strength but excels in "formability without cracking." It provides exceptional resistance to moisture and marine environments. It is the go-to choice for electrical enclosures, truck body panels, and general sheet metal forming.
- Grade 5083 (True Marine Grade): The mandatory specification for offshore marine fabrication. It possesses significantly higher strength than 5052 and offers the absolute best saltwater corrosion resistance in the group. Crucially, it boasts outstanding weldability, retaining its structural integrity post-weld, making it ideal for LNG pressure tanks and ship hulls.
- Grade 6061-T651 (Structural / Tooling Grade): The undisputed favorite of CNC machine shops. The "T651" designation indicates that the plate has been Stress-Relieved by Stretching. This means when a machinist mills the surface or performs deep pocketing, the plate will not warp or distort. It produces short, brittle chips that don't tangle around tooling. It is the premier choice for plastic injection molds and high-tolerance precision machinery parts.
Technical Specifications
Standard: ASTM B209 / JIS H4000
Temper Designations:
- 5052: H32 (Quarter-hard, cold-worked for excellent bending)
- 5083: H112 / H321 (Engineered for high-temperature resilience and marine structural use)
- 6061: T6 / T651 (Solution heat-treated and stress-relieved to guarantee absolute dimensional stability during CNC machining)
Typical Mechanical Properties
| Alloy - Temper | Tensile Strength (MPa) | Yield Strength (MPa) | Hardness (HB) |
|---|---|---|---|
| 5052 - H32 | 210 - 260 | ≥ 150 | 60 |
| 5083 - H112 | 270 - 345 | ≥ 125 | 75 |
| 6061 - T651 | ≥ 290 | ≥ 240 | 95 |
Standard Stock Sizes: Heavy Aluminium Plate
| Thickness (mm) | Grade 5052 | Grade 5083 | Grade 6061 |
|---|---|---|---|
| 1.0 - 3.0 (Sheet) | ✓ In Stock | ✓ In Stock | ✓ In Stock |
| 4.0 - 6.0 (Mid Plate) | ✓ In Stock | ✓ In Stock | ✓ In Stock |
| 8.0 - 12.0 (Thick Plate) | ✓ In Stock | ✓ In Stock | ✓ In Stock |
| 15.0 - 25.0 (Heavy Plate) | Consult Sales | ✓ In Stock | ✓ In Stock |
| 30.0 - 150.0+ (Block/Mold) | - | Consult Sales | ✓ Primary Mold Stock |
✓ = Ready to Ship | We operate an in-house metal service center offering custom Cut-to-Size services via CNC Plasma and Laser cutting for heavy industrial plates.
Frequently Asked Questions (FAQ)
- Grade 5052 is moderately strong, highly formable, and resists saltwater well; ideal for general sheet metal forming and automotive parts.
- Grade 5083 is significantly stronger than 5052, provides the highest saltwater corrosion resistance, and retains excellent post-weld strength; making it the mandatory choice for shipbuilding and pressure vessels.
- Grade 6061-T651 offers the highest tensile strength in this group, is highly machinable, and produces easily broken chips. It is the ultimate choice for CNC machining, precision machinery parts, and industrial molds.
