Aluminum alloy 3003 contains about 1.25% manganese and 0.1% copper, which increase the strength approximately 20% above the 1000 series aluminum grades. This is the most widely used of all aluminum alloys and it has all the excellent characteristics of alloy 1100 with higher strength. It is a medium strength alloy that is hardenable only by cold work and is not heat treatable. It has good weldability, formability and corrosion resistance.
Typical applications include general sheet metal work requiring greater strength than is provided by 1000 series aluminum alloys, profiled building sheet (roofing and siding), insulation panels, food and chemical handling equipment.
Chemical Composition (wt%) limits as specified in ASTM B209 and ASME SB209*
| Element | 3003 |
| Silicon | 0.6 |
| Iron | 0.7 |
| Copper | 0.05-0.20 |
| Manganese | 1.0-1.5 |
| Zinc | 0.10 |
| Aluminum | balance |
| Other Elements (each) | 0.05 |
| Other Elements (total) | 0.15 |
Mechanical property requirements for annealed product (O temper) as specified in ASTM B209 and ASME SB209
| Thickness (inch) | Yield Strength Min. (ksi) | Tensile Strength (ksi) |
Elongation (%) Min. |
Bend Diameter Factor,N |
|
| Min. | Max. | ||||
| 0.006 – 0.019 | 5.0 | 14.0 | 19.0 | 14 | 0 |
| 0.008 – 0.012 | 5.0 | 14.0 | 19.0 | 18 | 0 |
| 0.013 – 0.031 | 5.0 | 14.0 | 19.0 | 20 | 0 |
| 0.032 – 0.050 | 5.0 | 14.0 | 19.0 | 23 | 0 |
| 0.051 – 0.249 | 5.0 | 14.0 | 19.0 | 25 | 0 |
| 0.250 – 3.00 | 5.0 | 14.0 | 19.0 | 23 | - |
Mechanical property requirements for strain hardened H12 temper (¼ hard) as specified in ASTM B209 and ASME SB209
| Thickness (inch) | Yield Strength Min. (ksi) | Tensile Strength (ksi) |
Elongation (%) Min. |
Bend Diameter Factor,N |
|
| Min. | Max. | ||||
| 0.017 – 0.019 | 12.0 | 17.0 | 23.0 | 3 | 0 |
| 0.020 – 0.031 | 12.0 | 17.0 | 23.0 | 4 | 0 |
| 0.032 – 0.050 | 12.0 | 17.0 | 23.0 | 5 | 0 |
| 0.051 – 0.113 | 12.0 | 17.0 | 23.0 | 6 | 0 |
| 0.114 – 0.161 | 12.0 | 17.0 | 23.0 | 7 | 0 |
| 0.162 - 0.249 | 12.0 | 17.0 | 23.0 | 8 | 0 |
| 0.250 – 0.499 | 12.0 | 17.0 | 23.0 | 9 | - |
| 0.500 – 2.000 | 12.0 | 17.0 | 23.0 | 10 | - |
Mechanical property requirements for strain hardened H14 temper (½ hard) as specified in ASTM B209 and ASME SB209
| Thickness (inch) | Yield Strength Min. (ksi) | Tensile Strength (ksi) |
Elongation (%) Min. |
Bend Diameter Factor,N |
|
| Min. | Max. | ||||
| 0.009 – 0.012 | 17.0 | 20.0 | 26.0 | 1 | 0 |
| 0.013 – 0.019 | 17.0 | 20.0 | 26.0 | 2 | 0 |
| 0.020 – 0.031 | 17.0 | 20.0 | 26.0 | 3 | 0 |
| 0.032 – 0.050 | 17.0 | 20.0 | 26.0 | 4 | 0 |
| 0.051 – 0.113 | 17.0 | 20.0 | 26.0 | 5 | 0 |
| 0.114 – 0.161 | 17.0 | 20.0 | 26.0 | 6 | 2 |
| 0.162 – 0.249 | 17.0 | 20.0 | 26.0 | 7 | 2 |
| 0.250 – 0.499 | 17.0 | 20.0 | 26.0 | 8 | - |
| 0.500 – 1.000 | 17.0 | 20.0 | 26.0 | 10 | - |
Physical properties for Aluminim 3003
| Property | 3003 Data |
| Density, lb/in3 | 0.099 |
| Modulus of Elasticity, psi | 10.0 x 106 |
| Coefficient of Thermal Expansion, 68-212˚F, /˚F | 12.9 x 10-6 |
| Thermal Conductivity, Btu/ft hr ˚F | 112 |
| Specific Heat, Btu/lb ˚F | 0.213 |
| Electrical Resistivity, Microohm-in | 1.374 |
Typical standards for Aluminum 3003
| 3003 |
| ASTM B209 |
| ASME SB209 |
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Data are typical, are provided for informational purposes, and should not be construed as maximum or minimum values for specification or for final design, or for a particular use or application. The data may be revised anytime without notice. We make no representation or warranty as to its accuracy and assume no duty to update. Actual data on any particular product or material may vary from those shown herein.
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