MakeItFrom.com
Menu (ESC)

852.0 (852.0-T5, A08520) Cast Aluminum

852.0 aluminum is an aluminum alloy formulated for casting. Cited properties are appropriate for the T5 temper. To achieve this temper, the metal is artificially aged until it meets standard mechanical property requirements. 852.0 is the Aluminum Association (AA) designation for this material. A08520 is the UNS number. Older literature may refer to this material as B850.0, but this is now discouraged.

It has the lowest melting temperature among the ANSI/AA cast aluminums in the database.

The graph bars on the material properties cards below compare 852.0 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

64

Elastic (Young's, Tensile) Modulus

70 GPa 10 x 106 psi

Elongation at Break

3.4 %

Fatigue Strength

73 MPa 11 x 103 psi

Poisson's Ratio

0.33

Shear Modulus

26 GPa 3.8 x 106 psi

Shear Strength

130 MPa 20 x 103 psi

Tensile Strength: Ultimate (UTS)

200 MPa 29 x 103 psi

Tensile Strength: Yield (Proof)

150 MPa 21 x 103 psi

Thermal Properties

Latent Heat of Fusion

370 J/g

Maximum Temperature: Mechanical

190 °C 370 °F

Melting Completion (Liquidus)

640 °C 1180 °F

Melting Onset (Solidus)

210 °C 400 °F

Solidification (Pattern Maker's) Shrinkage

1.3 %

Specific Heat Capacity

840 J/kg-K 0.2 BTU/lb-°F

Thermal Conductivity

180 W/m-K 100 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

45 % IACS

Electrical Conductivity: Equal Weight (Specific)

130 % IACS

Otherwise Unclassified Properties

Base Metal Price

15 % relative

Density

3.2 g/cm3 200 lb/ft3

Embodied Carbon

8.5 kg CO2/kg material

Embodied Energy

160 MJ/kg 67 x 103 BTU/lb

Embodied Water

1150 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

6.2 MJ/m3

Resilience: Unit (Modulus of Resilience)

160 kJ/m3

Stiffness to Weight: Axial

12 points

Stiffness to Weight: Bending

43 points

Strength to Weight: Axial

17 points

Strength to Weight: Bending

24 points

Thermal Diffusivity

65 mm2/s

Thermal Shock Resistance

8.7 points

Alloy Composition

Among cast aluminum alloys, the composition of 852.0 aluminum is notable for including tin (Sn) and containing a comparatively high amount of copper (Cu). Tin is used to increase bearing properties at the cost of a decrease in corrosion resistance. Copper is used to improve strength. This comes at the cost of a decrease in corrosion resistance and weldability.

Aluminum (Al) 86.6 to 91.3
Tin (Sn) 5.5 to 7.0
Copper (Cu) 1.7 to 2.3
Nickel (Ni) 0.9 to 1.5
Magnesium (Mg) 0.6 to 0.9
Iron (Fe) 0 to 0.7
Silicon (Si) 0 to 0.4
Titanium (Ti) 0 to 0.2
Manganese (Mn) 0 to 0.1
Residuals 0 to 0.3

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

Followup Questions

Similar Alloys

Further Reading

ASTM B618: Standard Specification for Aluminum-Alloy Investment Castings

ASTM B108: Standard Specification for Aluminum-Alloy Permanent Mold Castings

ASTM B26: Standard Specification for Aluminum-Alloy Sand Castings

Handbook of Aluminum vol. 2: Alloy Production and Materials Manufacturing, George Totten and D. Scott MacKenzie (editors), 2003

Properties and Selection: Nonferrous Alloys and Special-Purpose Materials, ASM Handbook vol. 2, ASM International, 1993