6061 aluminium alloy
| A6061 | |
|---|---|
| Material type | Alloy |
| Alloy properties | |
| UNS identifier | A96061 |
| Physical properties | |
| Density (ρ) | 2.70 g/cm3 |
| Mechanical properties | |
| Young's modulus (E) | 68 GPa (9,900 ksi) |
| Tensile strength (σt) | 124–290 MPa (18.0–42.1 ksi) |
| Elongation (ε) at break | 12–25% |
| Poisson's ratio (ν) | 0.33 |
| Thermal properties | |
| Melting temperature (Tm) | 585 °C (1,085 °F) |
| Thermal conductivity (k) | 151–202 W/(m·K) |
| Linear thermal expansion coefficient (α) | 2.32×10−5 K−1 |
| Specific heat capacity (c) | 897 J/(kg·K) |
| Electrical properties | |
| Volume resistivity (ρ) | 32.5–39.2 nOhm·m |
6061 aluminium alloy (Unified Numbering System (UNS) designation A96061) is a precipitation-hardened aluminium alloy, containing magnesium and silicon as its major alloying elements. Originally called "Alloy 61S", it was developed in 1935. It has good mechanical properties, exhibits good weldability, and is very commonly extruded (second in popularity only to 6063). It is one of the most common alloys of aluminium for general-purpose use.
It is commonly available in pre-tempered grades such as 6061-O (annealed), tempered grades such as 6061-T6 (solutionized and artificially aged) and 6061-T651 (solutionized, stress-relieved stretched and artificially aged).