Which aluminum alloy grade is strongest?

7075-T6 is the strongest common aluminum alloy plate, with an ultimate tensile strength of 570 MPa. It's the go-to grade for aerospace and high-stress structural parts. But it's also expensive — FOB prices run $5,000–$7,000/tonne, roughly 3–4× the cost of 1050 or 3003.

What is the difference between 5052 and 5083 aluminum?

Both are marine-grade Al-Mg alloys, but 5083 is stronger (270–350 MPa tensile vs 5052's 210–260 MPa) and offers better seawater corrosion resistance. 5083 is the standard for ship hulls and chemical tanks. 5052 is more affordable and easier to form, making it a better fit for fuel tanks, marine interiors, and electronics enclosures. For more details on steel alternatives, see our stainless steel product page .

How do I choose between 6061 and 6082 aluminum plate?

6061-T6 has a tensile strength of 310 MPa and is the most versatile structural grade — it machines well, welds reasonably, and accepts anodizing. 6082-T6 is stronger at 340 MPa and offers better corrosion resistance, which makes it the preferred choice for European structural applications (EN 755 standard). 6082 typically costs 5–10% more than 6061. Both are stocked in 4×8' and 4×10' sheets. Check our aluminum alloy product page for available sizes.

What is the best aluminum grade for marine applications?

5083-H116/H321 is the industry standard for marine-grade plate. It offers the highest corrosion resistance in saltwater among common grades, good weldability, and maintains strength at low temperatures. 5052 is a lower-cost alternative for less demanding marine environments like interior fittings and small boat parts. For ship hulls, 5083 is mandatory in most classification society rules.

Which aluminum grades can be anodized?

5xxx series (5052, 5083) and 6xxx series (6061, 6063, 6082) anodize well, with 6063 and 5005 giving the best cosmetic results. 1xxx series (1050, 1060) also anodize cleanly but are too soft for structural use. 7xxx series (7075) can be anodized but the color may be uneven due to zinc content. 3xxx series (3003) anodizes to a grayish tone — acceptable for industrial but not decorative use.

How much does aluminum alloy plate cost FOB China?

FOB China prices for aluminum alloy plate in mid-2026 range from approximately $2,200/tonne for 1050/3003 up to $6,000–$12,000/tonne for aerospace-grade 7075. 5052 runs about $2,500–$3,200/tonne, 5083 around $3,000–$4,000/tonne, and 6061-T6 roughly $2,800–$3,500/tonne. Prices vary with thickness, width, surface finish, and order quantity.

Aluminum Alloy Plate Grade Selection Guide 2026: 1050 to 7075 for Importers

July 5, 2026

Picking the wrong aluminum grade costs you money — either you pay for strength you don't need, or the part fails because the alloy wasn't right for the job. This guide breaks down 7 common aluminum alloy plate grades (1050 through 7075) so you can match the right alloy to your application without guesswork.

Aluminum Plate Market Overview 2026

The global aluminum plate and sheet market was valued at $119.2 billion in 2025 and is projected to reach $190.3 billion by 2034. The aluminum sheets and coils segment alone is worth $55.5 billion in 2025, with a 6% CAGR through 2035 driven by demand from automotive lightweighting, construction, and renewable energy.

China remains the largest producer and exporter. In December 2025, Chinese aluminum billet production hit 155.6 million tonnes, running at a capacity utilization of 58.2%. FOB China prices for common grades range from $2,200 to $4,000 per tonne for standard sizes — roughly 30–50% below European or North American mill prices.

7 Common Aluminum Alloy Grades at a Glance

Grade	Series	Tensile Strength	Key Feature	FOB Price/Tonne	Best For
1050	1xxx	65–90 MPa	99.5% pure Al, high conductivity	$2,200–$2,600	Electrical, chemical, reflectors
3003	3xxx	110–145 MPa	Good formability, moderate strength	$2,300–$2,700	Kitchenware, food processing, roofing
5052	5xxx	210–260 MPa	Good fatigue & corrosion resistance	$2,500–$3,200	Fuel tanks, marine, electronics
5083	5xxx	270–350 MPa	Highest marine-grade, seawater resistant	$3,000–$4,000	Shipbuilding, chemical tanks, pressure vessels
6061	6xxx	260–310 MPa	Most versatile, machinable, weldable	$2,800–$3,500	Structural, molds, automotive
6082	6xxx	300–340 MPa	Higher strength than 6061, EN standard	$3,000–$3,800	European structural, rail, bridges
7075	7xxx	500–570 MPa	Strongest common grade, aerospace	$5,000–$12,000	Aerospace, high-stress parts, tooling

1xxx Series — Pure Aluminum (1050, 1060, 1100)

These grades are 99%+ pure aluminum. They offer the best thermal and electrical conductivity but are soft — tensile strength barely hits 90 MPa. I see them used most often for chemical equipment, lighting reflectors, and electrical busbars where strength isn't the priority.

FOB prices are the lowest of any grade: around $2,200–$2,600/tonne. They form easily and weld well, but don't hold up under mechanical load. If your application needs any structural strength at all, skip straight to 3xxx or 5xxx.

3xxx Series — The Workhorse (3003)

3003 is the most common general-purpose grade. It adds manganese for about 60% more strength than pure aluminum while keeping excellent formability. It's what you'll find in kitchen utensils, food processing equipment, roofing sheets, and chemical storage tanks.

Price sits around $2,300–$2,700/tonne. It's affordable and available in every standard sheet size (4×8', 4×10', 1250×2500mm). One thing to know: 3003 doesn't respond well to anodizing — the color comes out gray instead of clear. If appearance matters, go with 5005 or 6061 instead.

5xxx Series — Marine & Corrosion Resistant (5052, 5083)

This is where strength gets serious. The 5xxx series uses magnesium as the main alloying element. These grades are not heat-treatable — they get their strength from work hardening — but they offer the best corrosion resistance of any aluminum series, especially in saltwater.

5052 (210–260 MPa) is the go-to for fuel tanks, marine interiors, and electronics housings. It has excellent fatigue strength and forms well.

5083 (270–350 MPa) is the standard for ship hulls and chemical tankers. It's stronger, more seawater-resistant, and meets most classification society rules (Lloyd's, DNV, ABS). Expect to pay $3,000–$4,000/tonne — about 20–30% more than 5052.

A customer I worked with last year ordered 5083-H116 8mm plate for a fishing boat refit in Vietnam. The mill test certificates matched ASTM B209, and the price came in around $3,200/tonne FOB. That kind of spec consistency matters more than saving a few hundred bucks on the wrong grade.

6xxx Series — The Structural Standard (6061, 6082)

6xxx alloys add both magnesium and silicon, making them heat-treatable. This means you can get much higher strength than 5xxx without losing weldability or corrosion resistance. They're the standard for structural applications worldwide.

6061-T6 (310 MPa tensile) is the most widely stocked structural grade globally. It machines beautifully, welds acceptably with 4043 or 5356 filler, and takes anodizing to a clean clear or bronze finish. 4×8' sheets in 3mm, 5mm, and 6mm are typically ex-stock in most Chinese warehouses.

6082-T6 (340 MPa) is the European standard under EN 755. It's about 10% stronger than 6061 and offers slightly better corrosion resistance, making it the preferred choice for bridges, rail carriages, and structural components in the UK and EU markets. It costs about 5–10% more than 6061.

Both grades work well with our fiber laser cutting machines — 6kW systems cut 6mm 6061 plate at about 3.5 m/min with nitrogen assist gas, giving a clean edge that needs minimal secondary finishing.

7xxx Series — Aerospace Strength (7075)

7075-T6 is the strongest grade on this list. With a tensile strength of 570 MPa, it's comparable to mild steel. The downside? It costs $5,000–$12,000/tonne, it's difficult to weld, and it has poor corrosion resistance compared to 5xxx or 6xxx alloys.

Use it for aerospace fittings, high-performance sporting goods, and tooling where nothing else is strong enough. For anything else, it's probably overkill.

5-Step Grade Selection Framework

Define the environment — Is it indoor, outdoor, marine, or chemical? Saltwater exposure means 5083 or 5052. Dry indoor means 3003 or 6061.
Calculate the load — What stress will the part carry? Under 100 MPa? 3003 works. 100–250 MPa? 5052 or 6061. Over 250 MPa? 5083, 6082, or 7075.
Check fabrication needs — Will you weld, bend, machine, or anodize? 6061 handles all four. 5083 welds well but doesn't anodize to a decorative finish. 7075 is hard to weld.
Set a budget — Multiply your tonnage by FOB price. If you need 20 tonnes of 5083 at $3,500 vs 5052 at $2,800, the gap is $14,000. Is the extra corrosion resistance worth it?
Verify supply — Check what sizes and tempers are available ex-stock. 6061-T6 4×8' sheets ship fast. 6082-T6 6m plates may need a 2-week production lead time.

Standard Sizes & Surface Options

Most Chinese mills stock aluminum plate in these standard sizes:

Sheet: 1000×2000mm, 1220×2440mm (4×8'), 1250×2500mm, 1500×3000mm
Plate: 1500×3000mm, 2000×4000mm, 2500×6000mm
Thickness: 0.3mm to 200mm
Tempers: O, H14, H24, H32, T4, T6, T651

Surface finishes include mill finish (standard), anodized (clear, bronze, black), powder coated, PVDF coated, stucco embossed (tread plate), brushed, and mirror. For most industrial buyers, mill finish is fine — you save $150–$300/tonne over anodized.

Chinese GB/T Standards vs International Equivalents

One question I get a lot: "Can I use Chinese-standard material in my country?" The short answer is yes — GB/T 3880 aluminum plate is equivalent to ASTM B209, EN 485, and JIS H4000 in chemical composition and mechanical properties. Chinese mills issue mill test certificates showing both GB/T and ASTM values, which pass most import customs checks without issue.

For more on steel and aluminum material standards, read our stainless steel product guide.

FAQ

Which aluminum grade is best for welding?

5052 and 5083 are easiest to weld (5xxx series). 6061 also welds well with 4043 or 5356 filler. 7075 is very hard to weld — avoid it if you need joining.

What is the cheapest aluminum plate grade?

1050 and 1060 pure aluminum are the cheapest at $2,200–$2,600/tonne FOB. 3003 is close behind at $2,300–$2,700.

Can aluminum plate be laser cut?

Yes. Fiber laser cutting handles aluminum plate up to about 20mm thickness with nitrogen assist gas. Our 6kW laser cutting machine cuts 6mm 6061 at 3.5 m/min with a clean edge. See our assist gas guide for detailed settings.

What is the difference between T6 and T651 temper?

T651 is T6 with additional stress relieving by stretching. For plate over 12mm thick, T651 is recommended for machining applications because T6 plate can release internal stress during cutting, causing warping.

How do I know if my supplier is giving me the right grade?

Ask for a mill test certificate (MTC) showing chemical composition per GB/T 3190 or ASTM B209. A reputable Chinese supplier provides this with every shipment. If they can't produce it, that's a red flag.

What aluminum grade is food-grade?

1050, 1100, 3003, and 5052 are considered food-grade. 3003 is the most common for food processing equipment and cookware. 6061 is also food-safe but less common for direct food contact.

Written by David Chen, Export Manager at FANY LASER. 12 years in aluminum and steel export trade. Connect on LinkedIn

Request a Quote →