# 213.0 (213.0-F, CS74A) Cast Aluminum

213.0 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the as-fabricated (no temper or treatment) condition. 213.0 is the Aluminum Association (AA) designation for this material. Additionally, the SAE designation is 33. And the UNS number is A02130. Older literature may refer to this material as ASTM CS74A, but this is now discouraged.

The graph bars on the material properties cards below compare 213.0 aluminum to: ANSI/AA cast aluminums (top), all aluminum alloys (middle), and the entire database (bottom). A full bar means this is the highest value in the relevant set. A half-full bar means it's 50% of the highest, and so on.

## Mechanical Properties

Brinell Hardness

85

Elastic (Young's, Tensile) Modulus

73 *GPa* 11 *x 10 ^{6} psi*

Elongation at Break

1.5 *%*

Fatigue Strength

93 *MPa* 14 *x 10 ^{3} psi*

Poisson's Ratio

0.33

Shear Modulus

28 *GPa* 4.0 *x 10 ^{6} psi*

Tensile Strength: Ultimate (UTS)

190 *MPa* 27 *x 10 ^{3} psi*

Tensile Strength: Yield (Proof)

130 *MPa* 19 *x 10 ^{3} psi*

## Thermal Properties

Latent Heat of Fusion

410 *J/g*

Maximum Temperature: Mechanical

170 *°C* 340 *°F*

Melting Completion (Liquidus)

670 *°C* 1230 *°F*

Melting Onset (Solidus)

480 *°C* 900 *°F*

Specific Heat Capacity

850 *J/kg-K* 0.2 *BTU/lb-°F*

Thermal Conductivity

130 *W/m-K* 77 *BTU/h-ft-°F*

Thermal Expansion

23 *µm/m-K*

## Electrical Properties

Electrical Conductivity: Equal Volume

34 *% IACS*

Electrical Conductivity: Equal Weight (Specific)

94 *% IACS*

## Otherwise Unclassified Properties

Base Metal Price

11 *% relative*

Density

3.2 *g/cm ^{3}* 200

*lb/ft*

^{3}Embodied Carbon

7.7 *kg CO _{2}/kg material*

Embodied Energy

140 *MJ/kg* 61 *x 10 ^{3} BTU/lb*

Embodied Water

1090 *L/kg* 130 *gal/lb*

## Common Calculations

Resilience: Ultimate (Unit Rupture Work)

2.5 *MJ/m ^{3}*

Resilience: Unit (Modulus of Resilience)

120 *kJ/m ^{3}*

Stiffness to Weight: Axial

13 *points*

Stiffness to Weight: Bending

44 *points*

Strength to Weight: Axial

16 *points*

Strength to Weight: Bending

23 *points*

Thermal Diffusivity

49 *mm ^{2}/s*

Thermal Shock Resistance

8.0 *points*

## Alloy Composition

Among cast aluminum alloys, the composition of 213.0 aluminum is notable for containing a comparatively high amount of copper (Cu). Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.

Al | 83.5 to 93 | |

Cu | 6.0 to 8.0 | |

Si | 1.0 to 3.0 | |

Zn | 0 to 2.5 | |

Fe | 0 to 1.2 | |

Mn | 0 to 0.6 | |

Ni | 0 to 0.35 | |

Ti | 0 to 0.25 | |

Mg | 0 to 0.1 | |

res. | 0 to 0.5 |

All values are % weight. Ranges represent what is permitted under applicable standards.

## Followup Questions

## Similar Alloys

## Further Reading

Aluminum: Properties and Physical Metallurgy, John E. Hatch (editor), 1984

ASM Specialty Handbook: Aluminum and Aluminum Alloys, J. R. Davis (editor), 1993