# 1200 Aluminum vs. ASTM B631 Class A

1200 aluminum belongs to the aluminum alloys classification, while ASTM B631 class A belongs to the otherwise unclassified metals. There are 16 material properties with values for both materials. Properties with values for just one material (16, in this case) are not shown. Please note that the two materials have significantly dissimilar densities. This means that additional care is required when interpreting the data, because some material properties are based on units of mass, while others are based on units of area or volume.

For each property being compared, the top bar is 1200 aluminum and the bottom bar is ASTM B631 class A.

Metric UnitsUS Customary Units

## Mechanical Properties

Elastic (Young's, Tensile) Modulus, GPa | 69 | |

220 |

Poisson's Ratio | 0.33 | |

0.3 |

Shear Modulus, GPa | 26 | |

85 to 86 |

## Thermal Properties

Latent Heat of Fusion, J/g | 400 | |

160 |

Melting Completion (Liquidus), °C | 660 | |

2680 to 2690 |

Specific Heat Capacity, J/kg-K | 900 | |

160 |

Thermal Conductivity, W/m-K | 230 | |

420 |

Thermal Expansion, µm/m-K | 23 | |

11 |

## Electrical Properties

Electrical Conductivity: Equal Volume, % IACS | 58 | |

40 to 47 |

Electrical Conductivity: Equal Weight (Specific), % IACS | 190 | |

25 to 29 |

## Otherwise Unclassified Properties

Density, g/cm^{3} |
2.7 | |

15 |

Embodied Carbon, kg CO_{2}/kg material |
8.2 | |

43 |

Embodied Energy, MJ/kg | 150 | |

670 |

## Common Calculations

Stiffness to Weight: Axial, points | 14 | |

8.5 |

Stiffness to Weight: Bending, points | 50 | |

14 |

Thermal Diffusivity, mm^{2}/s |
92 | |

180 |