3003-H14 Aluminum: General-Purpose Manganese-Alloyed Sheet
ASTM B209 · Updated: 2026-05-25
3003-H14 is the most widely used general-purpose aluminum alloy, containing 1.0-1.5% manganese for approximately 20% higher strength than 1100 commercially pure aluminum while retaining excellent formability and corrosion resistance. The H14 temper (strain-hardened to half-hard) provides a good balance of strength and ductility for sheet metal work. Non-heat-treatable—strength comes from manganese solid solution and cold work. Used for cooking utensils, chemical equipment, roofing, siding, truck panels, and fuel tanks where moderate strength and excellent corrosion resistance at low cost are required.
Quick Facts
| Category | Aluminum Alloy |
| Standard | ASTM B209 |
| Density | 2.73 g/cm³ |
| Yield Strength | 145 MPa (21 ksi) |
| Tensile Strength | 152 MPa (22 ksi) |
Global Equivalents & Cross-Reference
| Alternative Standard / Grade | Action |
|---|---|
| EN AW-3003 | Compare |
| AlMn1Cu | Compare |
| A3003 | Compare |
| AA3003-H14 | Compare |
| ISO AlMn1Cu | Compare |
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Frequently Asked Questions
Can 3003 be anodized?
3003 can be anodized but produces a grayish, less decorative coating than 6061 or 5000 series alloys due to its manganese content. It is more commonly used in mill finish, painted, or clad with 1100 or 7072 for corrosion protection. For decorative anodized architectural applications, use 6061 or 6063 instead.