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1100
Aluminum 1100 – Commercially Pure Coil
1100-H14 / 1100-O
Overview
Aluminum 1100 is a commercially pure aluminum (99.0% minimum Al) known for its excellent corrosion resistance, high thermal and electrical conductivity, and outstanding formability. It is the softest and most ductile of all aluminum alloys, making it ideal for deep drawing, spinning, and coil applications. While not as strong as alloyed grades, its 57% IACS conductivity and excellent workability make it widely used for chemical equipment, food processing, heat exchangers, and decorative trim.
Chemical Composition
| Element | Min | Max |
|---|---|---|
| Aluminum (Al) | 99.00% | — |
| Silicon + Iron | — | 0.95% |
| Copper (Cu) | 0.05% | 0.20% |
Alloy Designations
UNSA91100
ASTMB209
Common NameCommercially Pure Aluminum
Mechanical Properties
Tensile Strength (H14)18 ksi (124 MPa)
Yield Strength (H14)17 ksi (117 MPa)
Elongation (H14)9%
Tensile Strength (O)13 ksi (90 MPa)
Hardness (H14)32 HB
Physical Properties
Density2.71 g/cm³ (0.098 lb/in³)
Melting Point643–657°C (1,190–1,215°F)
Electrical Conductivity57% IACS
Thermal Conductivity222 W/m·K
Modulus of Elasticity68.9 GPa
Typical Applications
- Chemical processing equipment
- Food and beverage processing
- Heat exchangers and radiators
- Decorative trim and nameplates
- Insulation jacketing
- Coil stock for deep drawing
Fabrication & Joining
- Excellent formability — deep drawing, spinning, bending
- Not heat-treatable — strengthened by cold work
- Excellent weldability with all methods
- Outstanding corrosion resistance
- Easily anodized for decorative or protective finish
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