Aluminum 1050A, O is a commercially pure aluminum alloy (99.5% minimum Al) known for excellent corrosion resistance, high ductility, thermal and electrical conductivity, and superior workability. The O (annealed) condition provides maximum softness and flexibility, making it ideal for deep drawing, forming, and welding applications. It is widely used in chemical processing, food industry, electrical appliances, and architectural applications.
1. General Information
| Property | Value |
|---|---|
| Designation | 1050A, Wrought |
| Condition | O (Annealed) |
| UNS Number | A91050 |
| EN Name | EN AW-1050A (EN AW-Al99,5) |
| EN Number | 3.0255 |
| Aluminum 1050A O (Commercial Purity) |
2. Chemical Composition
| Element | Composition (%) |
|---|---|
| Aluminum (Al) | 99.1 – 100 |
| Iron (Fe) | ≤ 0.40 |
| Silicon (Si) | ≤ 0.25 |
| Copper (Cu) | ≤ 0.05 |
| Manganese (Mn) | ≤ 0.05 |
| Vanadium (V) | ≤ 0.05 |
| Zinc (Zn) | ≤ 0.05 |
| Titanium (Ti) | ≤ 0.03 |
| Aluminum 1050A O (Commercial Purity) |
3. Mechanical Properties
| Property | Value |
|---|---|
| Young’s Modulus | 69 – 72 GPa |
| Yield Strength | 33 – 37 MPa |
| Tensile Strength | 76 – 84 MPa |
| Elongation | 35.2 – 40.9 % |
| Compressive Strength | 33 – 37 MPa |
| Flexural Strength | 33 – 37 MPa |
| Shear Modulus | 25 – 27 GPa |
| Bulk Modulus | 64 – 71 GPa |
| Poisson’s Ratio | 0.325 – 0.335 |
| Hardness (Vickers) | 19 – 21 HV |
| Fatigue Strength (10⁷ cycles) | 21.6 – 26.5 MPa |
| Fracture Toughness | 32 – 35 MPa.m⁰·⁵ |
| Aluminum 1050A O (Commercial Purity) |
4. Physical Properties
| Property | Value |
|---|---|
| Density | 2.68 – 2.74 g/cm³ |
| Melting Point | 645 – 658 °C |
| Maximum Service Temperature | 80 – 100 °C |
| Minimum Service Temperature | -273 °C |
| Aluminum 1050A O (Commercial Purity) |
5. Impact & Fracture Properties
| Property | Value |
|---|---|
| Fracture Toughness | 32 – 35 MPa.m⁰·⁵ |
| Toughness (G) | 14.5 – 17.4 kJ/m² |
| Aluminum 1050A O (Commercial Purity) |
6. Thermal Properties
| Property | Value |
|---|---|
| Thermal Conductivity | 224 – 234 W/m·°C |
| Specific Heat Capacity | 893 – 903 J/kg·°C |
| Thermal Expansion Coefficient | 22.9 – 24.1 µstrain/°C |
| Thermal Shock Resistance | 19.8 – 22.5 °C |
| Latent Heat of Fusion | 384 – 393 kJ/kg |
| Aluminum 1050A O (Commercial Purity) |
7. Electrical Properties
| Property | Value |
|---|---|
| Electrical Resistivity | 2.8 – 3.0 µΩ·cm |
| Electrical Conductivity | 57.5 – 61.6 %IACS |
| Galvanic Potential | -0.79 to -0.71 V |
| Aluminum 1050A O (Commercial Purity) |
8. Magnetic Properties
| Property | Value |
|---|---|
| Magnetic Type | Non-magnetic |
| Aluminum 1050A O (Commercial Purity) |
9. Processing & Machining Properties
| Property | Rating |
|---|---|
| Metal Casting | Unsuitable |
| Cold Forming | Excellent |
| Hot Forming | Excellent |
| Press Forming | Excellent |
| Deep Drawing | Excellent |
| Machining Speed | 149 m/min |
| Weldability | Excellent (No preheating or post-weld treatment required) |
| Aluminum 1050A O (Commercial Purity) |
10. Corrosion Resistance & Durability
| Environment | Resistance |
|---|---|
| Fresh Water | Excellent |
| Salt Water | Acceptable |
| Weak Acids | Excellent |
| Strong Acids | Excellent |
| Weak Alkalis | Acceptable |
| Strong Alkalis | Unacceptable |
| UV Radiation | Excellent |
| Stress Corrosion Cracking | Not Susceptible |
| Aluminum 1050A O (Commercial Purity) |
11. Sustainability & Environmental Impact
| Property | Value |
|---|---|
| Embodied Energy (Primary Production) | 190 – 209 MJ/kg |
| CO₂ Footprint (Primary Production) | 12.3 – 13.6 kg/kg |
| Water Usage | 1.14e³ – 1.26e³ L/kg |
| Embodied Energy (Recycling) | 32.3 – 35.7 MJ/kg |
| CO₂ Footprint (Recycling) | 2.54 – 2.8 kg/kg |
| Recycle Fraction in Current Supply | 52.3 – 57.8 % |
| Aluminum 1050A O (Commercial Purity) |
12. Standards & Similar Compositions
| Country/Region | Equivalent Standard(s) |
|---|---|
| Australia | 1050 to AS 2848.1, 1070 to AS 1734, 1070 to AS 2848.1 |
| Austria | Al99.5 to ONORM M3426, Al99.7 to ONORM M3426, H Al99.3 to ONORM M3426, H Al99.5 to ONORM M3426 |
| Belgium | 1050 to NBN P21-001, 1070 to NBN P21-001 |
| Canada | 0.997 to CSA HA.2, 0.9975 to CSA HA.2, 0.998 to CSA HA.2 |
| Czech Republic | 424005 to CSN |
| Europe (EN) | EN AW-1050A to CEN EN 573-3, EN AW-1060 to CEN EN 573-3, EN AW-1070A to CEN EN 573-3, EN AW-1350 to CEN EN 573-3, EN AW-1350A to CEN EN 573-3 |
| Finland | Al99.7 to SFS 2581, Al99.8 to SFS 2580 |
| France | EAl99.5 to NF A81-331, MAl99.5 to NF A81-331 |
| Germany (DIN) | 3.0255/Al99.5 to DIN 1712-3, 3.0257/E-Al to DIN 1712-3, 3.0259 to DIN 1732-1, 3.0275/Al99.7 to DIN 1712-3, EL-Al99.5 to DIN 1732-1, SG-Al99.5 to DIN 1732-1 |
| Hungary | Al99.5 to MSZ 3747/1 |
| India | 19000 to IS 2590, 19500 to IS 733, 19500 to IS 736, 19600 to IS 2590, 19700 to IS 2590, 19700 to IS 736, G1A to IS 739, Grade 3 to IS 4026, S-Al19500 to IS 5897, T1A to IS 738 |
| International (ISO) | Al99.3 to ISO 209-1, Al99.5 to ISO 209-1, Al99.5 to ISO/R 115, Al99.6 to ISO 209-1, Al99.7 to ISO 209-1, Al99.7 to ISO/R 827, Al99.7 to ISO/TR 2136, Al99.8 to ISO/R 827, Al99.8 to ISO/TR 2136, Al99.8 to ISO/TR 2778, EAl99.5 to ISO 209-1 |
| Japan (JIS) | A1050BD/W to JIS H4040, A1050BE to JIS H4040, A1050H to JIS H4160, A1050P to JIS H4000, A1050TD to JIS H4080, A1050TE to JIS H4080, A1060PB to JIS H4180, A1060SB to JIS H4180, A1060SBC to JIS H4180, A1070BD/W to JIS H4040, A1070BE to JIS H4040, A1070H to JIS H4160, A1070P to JIS H4000, A1070TD to JIS H4080, A1070TE to JIS H4080, Class 2 to JIS H8300 |
| Norway | 17010 to NS 17010, 17015 to NS 17015 |
| Russia (GOST) | 1011 to GOST 4784, 1013 to GOST 4784, A0 to GOST 11069, A1 to GOST 3549, A5 to GOST 11069, AD0 to GOST 4784, AD1 to GOST 4784, Al to GOST |
| South Africa | 10501 (Al99.5) to SABS 712, 10701 (Al99.7) to SABS 712, 11604 (Al-EC99.6) to SABS 712, 11653 (Al99.65) to SABS 712 |
| United Kingdom (BS) | 1050A to BS 1470, 1050A to BS 1471, 1050A to BS 1472, 1050A to BS 1473, 1050A to BS 1474, 1050A to BS 1475 |
| United States (ASTM, SAE, UNS) | 1030, 1035, 1040, 1045, 1050, 1050 to ASTM B491/B491M, 1050A, 1060, 1060 to AMS 4000E, 1060 to ASME SB209, 1060 to ASME SB210, 1060 to ASME SB221, 1060 to ASME SB234, 1060 to ASME SB241, 1060 to ASTM B209M, 1060 to ASTM B210M, 1060 to ASTM B211M, 1060 to ASTM B221M, 1060 to ASTM B234, 1060 to ASTM B241M, 1060 to ASTM B345/B345M, 1060 to ASTM B404/B404M, 1060 to ASTM B483/B483M, 1060 to ASTM B736, 1065, 1070, 1070A, 1145 to ASTM B373, 1145 to ASTM B736, 1345, 1350 to ASTM B233, 1350 to ASTM B236M, 1350A, UNS A91030, UNS A91035, UNS A91040, UNS A91045, UNS A91050, UNS A91055, UNS A91060, UNS A91065, UNS A91070, UNS A91250, UNS A91345 |
| Venezuela | 1080 to COPANT 862 |
| Yugoslavia | 3.0353.00/Al99.5E to JUS C.C2.100, 3.0653.00/Al99.7 to JUS C.C2.100, 3.0655.00/Al99.5 to JUS C.C2.100 |
| Aluminum 1050A O (Commercial Purity) |
13. Tradenames for Aluminum 1050A, O (Annealed)
| Tradenames |
|---|
| ALCAN C1S |
| ALMINAL A2 |
| AMPAL 601 |
| AMPAL 602 |
| AMPAL 603 |
| AMPAL 604 |
| AMPAL 605 |
| AMPAL 607 |
| AMPAL 609 |
| AMPAL 611 |
| AMPAL 615 |
| AMPAL 625 |
| AMPAL 637 |
| AMPAL 650 |
| AMPAL 660 |
| AMPAL 670 |
| BALCO ALLOY 1350.0 |
| DURCILIUM T |
| IMPALCO P5 |
| Aluminum 1050A O (Commercial Purity) |
Conclusion
Aluminum 1050A, O is an excellent choice for applications requiring maximum ductility, corrosion resistance, and easy processing. It is ideal for forming operations, deep drawing, food packaging, chemical processing equipment, and electrical conductors. However, due to its low strength, it is not suitable for high-load structural applications.
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