Thick aluminum plate 3–50 mm
Thick aluminum plate for mold tooling, marine hulls, tank shells, pressure equipment and structural fabrication — 5083, 5086, 5754, 5052 and 6061 in the gauges fabricators order, plus pre-stretched 2xxx and 7xxx grades for tooling. Widths up to 2400 mm, cut to your length, no minimum order quantity.
Aluminum plate sizes and thickness — 3 to 50 mm
Aluminum plate thickness runs 3–50 mm across the program — the table lists the alloy and gauge bands it is built around, not a stock printout. The usable limit depends on the alloy + temper combination and on the rolling slot at the time — send your size and we confirm it against the current schedule.
| Alloy | Temper | Thickness (mm) | Width (mm) | Length (mm) | Typical end-use |
|---|---|---|---|---|---|
| 5083 | O / H111 / H116 / H321 | 3 – 50 | 1000 – 2400 | 2000 – 6000 | Marine hull and deck, tank shells, offshore structure |
| 5086 | H116 / H321 | 3 – 40 | 1000 – 2200 | 2000 – 6000 | Offshore modules, pressure vessels, marine fittings |
| 5456 | H116 / H321 | 4 – 40 | 1000 – 2200 | 2000 – 6000 | Higher-strength marine and protected structures |
| 5754 | H111 | 3 – 40 | 1000 – 2200 | 2000 – 7500 | Tanker bulkheads, silo courses, vehicle floors |
| 5052 | O / H32 / H38 | 3 – 25 | 1000 – 1500 | 2000 – 4000 | Vehicle panels, formed parts, general fabrication |
| 6061 | T6 / T651 | 3 – 50 | 1000 – 2000 | 2000 – 6000 | Mold and tooling plate, machine bases, jigs |
| 6082 | T6 / T651 | 3 – 40 | 1000 – 2000 | 2000 – 6000 | Structural frames, transport fabrications, machined parts |
| 7075 / 7050 | T651 / T7451 | 3 – 50 | 1000 – 1600 | 2000 – 4000 | High-strength tooling — supplied on previous programs |
Standard dimensional tolerances apply unless your drawing specifies otherwise — tell us which standard you work to. 2,000 mm is the routine production width on 5xxx plate; 2,200 and 2,400 mm are produced to order, so confirm the width before you freeze a course layout. Gauges above 50 mm and lengths beyond 6000 mm are quoted case by case.
Plate alloys and tempers — 5083, 6061 T651, 7075
Series coverage across the thick-plate program. If your alloy is not listed, still ask — some grades are scheduled rather than stocked.
| Series | Alloys | Tempers | Thickness (mm) | Max width (mm) | Typical use |
|---|---|---|---|---|---|
| 1xxx · 3xxx | 1050, 1060, 1070, 1100, 1350, 3003, 3004 | O, H12, H14, H24, H112 | 3 – 50 | 2400 | Formed parts, silo cone stock, general engineering |
| 5xxx | 5005, 5052, 5083, 5086, 5182, 5251, 5454, 5456, 5754 | O, H32, H111, H112, H116, H321 | 3 – 50 | 2400 | Marine, road tankers, pressure equipment, transport |
| 6xxx | 6061, 6063, 6082 | F, T4, T6, T451, T651 | 3 – 50 | 2000 | Tooling plate, structural frames, machined components |
| 2xxx · 7xxx quenched & pre-stretched | 2024, 2A12, 6061, 7050, 7075 | T351, T651, T7451, T4, T6 | 3 – 50 | 1600 | Precision tooling, high-strength plate, aerospace ground equipment |
Cold-rolled tempers (H16, H18, H22, H24, H26, H34 and H36) and the 3105 and 8011 cap-stock and deep-drawing grades belong to the thin-gauge program at 0.2–6 mm: they are listed on the aluminum sheet and aluminum coil pages.
Plate applications
- Mold, jig and tooling plate — 6061 T651 pre-stretched stock for injection molds, fixtures and machine bases
- Marine hull, deck and superstructure — 5083 H116 / H321
- Road tankers and tank containers — 5083 H111 shells paired with 5754 H111 bulkheads
- Silos, oil tanks and storage tanks — 5xxx shell courses sized to knock out a weld seam per ring
- Pressure vessels and process equipment — 5083 / 5086 with heat-level traceability on the certificate
- Structural frames and engineered fabrications — 6082 T6 where post-weld strength governs the design
- Transport floors and body structure — wide 5754 H111 plate that removes a floor seam
- Transportation structure — automotive and railway body panels, floors and frames where 5xxx plate replaces steel
- Power and electrical equipment — GIS shells, switchgear enclosures and transformer housings
- Defence and specialist fabrications — 5083 / 5456 plate for protected structures and enclosures
- Aircraft ground equipment and ULD structures — 7075 T651 / 7050 where strength-to-weight governs the section
- Wheel hub and forged stock — 6061 / 6082 blanks machined into hubs, rings and flanges
- Below 3 mm? Those run as aluminum sheet and aluminum coil
Plate for silo shells and tank walls
Silo and tank builders take most of our 5xxx plate. A shell course is normally 5083 H111 or 5754 H111, and the cone under it runs one gauge heavier. Thickness comes from your design load, not from a table of ours: 3–8 mm on a silo that holds no pressure, 10 mm and up on a pressure tank.
| Part | Alloy / temper | Thickness | Width | How it ships |
|---|---|---|---|---|
| Shell course | 5083 H111 · 5754 H111 | 4 – 40 mm | 2000 mm routine · 2200 / 2400 to order | Cut to length |
| Cone / hopper | 5083 · 5454 · 5052 | 6 – 40 mm | 1500 – 2200 mm | Circle or polygon blank |
| Ring beam / flange | 5083 H111 · 6061 T6 | 8 – 40 mm | 100 – 300 mm slit | Slit strip or cut bar |
| Roof / cap | 5052 H32 · 3003 H14 | 1.5 – 4 mm | 1000 – 1600 mm | Sheet or slit coil — see sheet |
Plate width and seam count
Most service centers hold 1,500 mm and below. That width sets how many plates go around a shell, and every joint between two plates is a seam to fit, weld and test. We run 2,000 mm as the routine width on 5xxx plate, with 2,200 and 2,400 mm to order. On a 6 m shell, 1,500 mm plate takes 13 plates around the ring; 2,000 mm takes 10. Three fewer seams per course, and about 6 m less butt weld on a 2 m high course. Send the course layout and we price the shell both ways, so you compare installed cost instead of price per tonne.
Quoting basis
We do not pick the thickness for you — that comes from your design code and your drawing. We quote to the drawing, and we tell you which widths we can roll before you freeze the course layout. Cone blanks are cut at ±2 mm on the diameter and keep the heat number of the parent plate, so the certificate travels with the cut part.
Roofing and cladding gauges for the same vessel sit on the aluminum sheet page. Full component list, mechanical values and the weld-count calculation sit on the silo and tank plate page; road tanker bodies on tanker and bulk-tank bodies.
Plate production — rolling, heat treatment and machining
- Produce to EN 485-2, the European aluminum plate standard, or ASTM B209: tell us which one your drawing or your market calls for, and the quote and the MTC are written against it
- Rolling, heat treatment, plate finishing and machining are scheduled against the order, with one certificate set
- Hot-rolled plate 3 – 50 mm, widths to 2400 mm, cut to length up to 6000 mm (longer against the rolling slot)
- Pre-stretched and stress-relieved tooling plate; ultrasonic testing available where your acceptance class requires it
- Group program: 5,000+ tonnes per year to project customers in 25+ countries, operating since 2019
- Mill test certificate (MTC) per heat on every batch — see certificates and mill documents
- Saw-cutting, blanking and surface milling to your drawing; export packing built around container loading
Frequently asked questions
Are you an aluminum plate manufacturer or a trading company?
AOYIN is the name on your order, packing list and MTC — that is the part that counts if something goes wrong. Melting, casting and rolling run on the mills we ship from; those are the mills buyers walk with us. Cutting, levelling, slitting, kitting and export packing run on our own floor. Both routes are open to inspection before you commit.
At what thickness does it stop being sheet and start being plate?
We run plate from 3 mm upwards and treat everything below 3 mm as sheet. If your part sits near the boundary — 2.5 mm formed panels, for instance — the aluminum sheet page covers it.
What is the widest and longest plate you can ship?
Widths up to 2400 mm and cut lengths up to 6000 mm are routine. In practice the limit is set by the alloy + gauge combination and by container loading rather than by the mill, so send us the exact size you need and we will confirm it against the current rolling slot.
6061 T651 or 5083 for a mold plate?
6061 T651 is the default for machined tooling: quenched and pre-stretched. 5083 is used for large jig or base plates where flatness and weldability matter more than hardness. Where you need maximum strength, 7075 T651 is available on previous programs.
Can you supply UT-tested plate with full traceability?
Yes. Every batch ships with an MTC (mill test certificate) per heat, traceable to the cast. Ultrasonic testing is available for tooling, pressure-retaining and structural grades — tell us the acceptance class you work to and we will quote to it.
Is there a minimum order quantity?
No MOQ on project specs. A single plate, a repair piece or a trial gauge is orderable at a fair per-kg price. At project volumes the lot ships together under one certificate.
5083 H116 or H321 — which one for marine work?
H116 is the standard choice for hull plating and deck. H321 is preferred where higher strength after thermal exposure matters, or where your class rule names it directly. Both can be supplied with class paperwork — the comparison is set out on our marine shipbuilding page.
How long does delivery take?
Stock gauges generally ship in 7 – 10 days. Non-stock gauge and width combinations — for example 40 mm × 2400 mm in 5083 — run in the standard 25 – 35 day export window, depending on where the rolling schedule sits when you order.
Related products
If your project mixes plate with another form, it ships on one order and one certificate set.
- Aluminum sheet — thinner gauges for forming, cladding and general fabrication
- Aluminum coil — mill-finish coil, including stock for circle blanking
- Aluminum circle — round disc blanks cut from coil, for cookware, reflectors and deep-drawn parts
- Aluminum profile — 6060 / 6063 / 6061 / 6082 extrusions with custom die tooling
- Marine grade sheet and plate — 5083 H116 / H321 supplied to class rules
- Tanker plate — 5083 / 5754 H111 shells, baffles and bulkheads
- Embossed aluminum and tread plate — patterned non-slip surfaces
Need thick aluminum plate?
Send alloy, temper, thickness, width, length and quantity — we come back within 12 hours with stock options and a mill reference.
Tel: 0570-386-9925 · Email: [email protected]
Get a quote — Aluminum plate / sheet
Tell us alloy, size and quantity. We reply within 12 hours.
Rather talk now? WhatsApp +86 133 0570 9557 · [email protected]