Quick take
When you're buying raw materials metal stock, the first choice is usually between a thin sheet and a thick plate. The four new aluminum options here span a listed price range of USD 29.58 to USD 158.08. Two are 3003 alloy sheets with a mill finish and corrosion resistance, while the other two are 6061-T6 plates. Your final pick comes down to the thickness and footprint you actually need, and how important surface cosmetics are.
Listed price comparison
| Product | Listed price | Price bar |
|---|---|---|
| 1/16-inch Aluminum Plate Sheet 12x24 3003 Mill Finish | USD 29.58 | |
| 1/4-inch Aluminum Plate 12x12 6061 T6 (Not Cosmetic) | USD 29.87 | |
| 1/8-inch Aluminum Plate Stock 12x24 3003 Mill Finish | USD 47.04 | |
| 1/2-inch Aluminum 6061 T6 Solid Plate 16x19 | USD 158.08 |
Decision matrix
| Product | Thickness | Alloy/Temper | Surface | Best use |
|---|---|---|---|---|
| 1/16-inch Aluminum Plate Sheet 12x24 3003 Mill Finish | 1/16 in | 3003 H14 | Mill finish | Light corrosion-resistant sheet stock |
| 1/4-inch Aluminum Plate 12x12 6061 T6 (Not Cosmetic) | 1/4 in | 6061 T6 | Not cosmetic | Small, rigid 6061 square |
| 1/8-inch Aluminum Plate Stock 12x24 3003 Mill Finish | 1/8 in | 3003 H14 | Mill finish | Mid-thickness 3003 stock |
| 1/2-inch Aluminum 6061 T6 Solid Plate 16x19 | 1/2 in | 6061 T6 | Solid stock | Heavy-duty 6061 plate |
Product notes
1/16-inch 3003 Aluminum Sheet
At the bottom of the listed price range, this 1/16-inch 3003 sheet is the thinnest stock in the group. The mill finish and corrosion resistance of the 3003 alloy make it a reasonable choice for light sheet work. The limitation is its 0.062-inch thickness: it is a sheet, not a structural plate, so it does not offer the rigidity of the thicker 6061 items here.
1/4-inch 6061 T6 Aluminum Plate (Not Cosmetic)
Listed just above the 1/16-inch sheet, this 1/4-inch 6061 T6 plate gives you a small square of heat-treated 6061. The T6 temper and plate form are stated in the title. The limitation is the surface: the title says 'not cosmetic,' and the description notes it may have minor scuffs or scratches and can be buffed or polished if desired. That makes it a solid choice for machining or mounting where surface appearance is secondary.
1/8-inch 3003 Aluminum Sheet
Priced between the 1/16-inch 3003 sheet and the 1/2-inch plate, this 1/8-inch 3003 option shares the mill finish and corrosion resistance of the thinner 3003 sheet. It is 0.125-inch thick and the description lists a yield strength of 21,000 psi. The limitation is that 3003 is not a high-strength structural alloy; if you need maximum strength, the 6061-T6 plates are the alternatives.
1/2-inch 6061 T6 Aluminum Solid Plate
At the top of the listed price range, this 1/2-inch 6061 T6 solid plate is the largest and thickest piece in the comparison. It is cut new from 0.50-inch plate, according to the title. The limitation is scale: the big footprint and 0.5-inch thickness are more than you need for small brackets or thin replacement parts, and the price is a significant step up from the other options.
Final recommendation
For the lowest listed price, choose the 1/16-inch 3003 sheet when you need a thin, wide piece of aluminum stock. If you want a small, thick 6061 square for nearly the same price and can accept a non-cosmetic face, pick the 1/4-inch plate. For a thicker 3003 sheet in the same footprint, go with the 1/8-inch option. And for a large, thick 6061-T6 plate, the 1/2-inch piece is the one that fits that need.
