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4007 (AlSi1.5Mn) Aluminum

4007 aluminum is a 4000-series aluminum alloy. The main alloying addition is silicon. 4007 is the Aluminum Association (AA) designation for this material. In European standards, it will be given as EN AW-4007. Additionally, the EN chemical designation is AlSi1,5Mn. And the UNS number is A94007.

It originally received its standard designation in 1978.

The properties of 4007 aluminum include three common variations. This page shows summary ranges across all of them. For more specific values, follow the links immediately below. The graph bars on the material properties cards further below compare 4007 aluminum to: 4000-series alloys (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

32 to 44

Elastic (Young's, Tensile) Modulus

71 GPa 10 x 106 psi

Elongation at Break

5.1 to 23 %

Fatigue Strength

46 to 88 MPa 6.7 to 13 x 103 psi

Poisson's Ratio


Shear Modulus

27 GPa 3.9 x 106 psi

Shear Strength

80 to 90 MPa 12 to 13 x 103 psi

Tensile Strength: Ultimate (UTS)

130 to 160 MPa 18 to 23 x 103 psi

Tensile Strength: Yield (Proof)

50 to 120 MPa 7.3 to 18 x 103 psi

Thermal Properties

Latent Heat of Fusion

410 J/g

Maximum Temperature: Mechanical

170 °C 340 °F

Melting Completion (Liquidus)

650 °C 1200 °F

Melting Onset (Solidus)

590 °C 1100 °F

Specific Heat Capacity

890 J/kg-K 0.21 BTU/lb-°F

Thermal Conductivity

170 W/m-K 96 BTU/h-ft-°F

Thermal Expansion

23 µm/m-K

Electrical Properties

Electrical Conductivity: Equal Volume

42 % IACS

Electrical Conductivity: Equal Weight (Specific)

140 % IACS

Otherwise Unclassified Properties

Base Metal Price

9.5 % relative


2.8 g/cm3 180 lb/ft3

Embodied Carbon

8.1 kg CO2/kg material

Embodied Energy

150 MJ/kg 65 x 103 BTU/lb

Embodied Water

1160 L/kg 140 gal/lb

Common Calculations

Resilience: Ultimate (Unit Rupture Work)

7.4 to 23 MJ/m3

Resilience: Unit (Modulus of Resilience)

18 to 110 kJ/m3

Stiffness to Weight: Axial

14 points

Stiffness to Weight: Bending

49 points

Strength to Weight: Axial

12 to 15 points

Strength to Weight: Bending

20 to 23 points

Thermal Diffusivity

67 mm2/s

Thermal Shock Resistance

5.5 to 6.7 points

Alloy Composition

Among wrought aluminum alloys, the composition of 4007 aluminum is notable for including cobalt (Co) and nickel (Ni). Cobalt is used to improve mechanical properties. Nickel is used to increase mechanical strength at elevated temperatures, and to reduce thermal expansion. However, it can increase susceptibility to pitting corrosion in certain alloys.

Aluminum (Al)Al 94.1 to 97.6
Silicon (Si)Si 1.0 to 1.7
Manganese (Mn)Mn 0.8 to 1.5
Iron (Fe)Fe 0.4 to 1.0
Nickel (Ni)Ni 0.15 to 0.7
Chromium (Cr)Cr 0.050 to 0.25
Copper (Cu)Cu 0 to 0.2
Magnesium (Mg)Mg 0 to 0.2
Titanium (Ti)Ti 0 to 0.1
Zinc (Zn)Zn 0 to 0.1
Cobalt (Co)Co 0 to 0.050
Residualsres. 0 to 0.15

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

Followup Questions

Similar Alloys

Further Reading

Iron in Aluminium Alloys: Impurity and Alloying Element, N. A. Belov et al., 2002

EN 485-2: Aluminium and aluminium alloys. Sheet, strip and plate. Mechanical properties

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

ISO 6361-2: Wrought aluminium and aluminium alloys - Sheets, strips and plates - Part 2: Mechanical properties

EN 573-3: Aluminium and aluminium alloys. Chemical composition and form of wrought products. Chemical composition and form of products