Differences Between 1060-H22 Aluminum and 1070-H22 Aluminum

Dec. 24, 2024

1060-H22 aluminum and 1070-H22 aluminum are very similar in many aspects, especially in alloy composition and thermal properties, but there are slight differences in some characteristics.

Mechanical Properties: The mechanical properties of the two alloys are almost identical, but the elongation and yield strength are slightly different. 1070-H22 has a fracture elongation (10%) higher than 1060-H22 (6.8%).
Thermal Properties: The thermal properties of the two alloys are nearly the same, except for thermal conductivity (1060-H22 has a value of 140 BTU/h-ft-°F, which is higher than 1070-H22's 130 BTU/h-ft-°F).
Electrical Properties: The electrical conductivity values are very close, with 1060-H22 slightly ahead in both volume and weight conductivity.
Alloy Composition: The compositions are almost identical, with only slight differences in the trace amounts of copper, iron, and silicon.

1060-H22 Aluminum and 1070-H22 Aluminum Alloy Composition

The alloy compositions of 1060-H22 aluminum and 1070-H22 aluminum are very close, with the main differences being in the trace amounts of copper, iron, and silicon. Both 1060 and 1070 belong to the high-purity aluminum series, containing a higher aluminum content, making them suitable for applications that require high conductivity and corrosion resistance.

Element	1060-H22 Aluminum	1070-H22 Aluminum
Aluminum (Al), %	99.6 to 100	99.7 to 100
Copper (Cu), %	0 to 0.050	0 to 0.040
Iron (Fe), %	0 to 0.35	0 to 0.25
Magnesium (Mg), %	0 to 0.030	0 to 0.030
Manganese (Mn), %	0 to 0.030	0 to 0.030
Silicon (Si), %	0 to 0.25	0 to 0.2
Titanium (Ti), %	0 to 0.030	0 to 0.030
Vanadium (V), %	0 to 0.050	0 to 0.050
Zinc (Zn), %	0 to 0.050	0 to 0.040
Residuals, %	0	0 to 0.030

1060 H22 Aluminum and 1070-H22 Aluminum Applications

Although the differences between these two aluminum alloys are small, there may be some preferred applications due to their performance differences.

Both 1060-H22 aluminum and 1070-H22 aluminum are high-purity alloys suitable for electrical, heat exchange, and other fields. The choice of alloy depends on the specific requirements of the application, such as demands for ductility, thermal conductivity, or electrical conductivity.

1060-H22 aluminum, with its higher thermal conductivity and better electrical conductivity, is suitable for applications requiring good heat and electrical conductivity, such as heat exchangers, electrical equipment, electronic components, and cable sheaths.
1070-H22 aluminum, with its higher elongation to fracture, is suitable for applications requiring better plasticity and toughness, such as those involving bending and forming.

1060-H22 Aluminum and 1070-H22 Aluminum Mechanical Properties

Tensile Yield Strength: The tensile yield strength of both alloys is very similar, but 1070-H22 aluminum may have a slight advantage, especially in low-load applications. Although both undergo the same H22 heat treatment, 1070 aluminum may exhibit slightly better resistance.
Elongation to Fracture: This is one of the most noticeable differences between the two. The elongation to fracture of 1070-H22 aluminum is 10%, higher than that of 1060-H22 aluminum at 6.8%. This indicates that 1070 aluminum exhibits higher ductility during stretching and can deform more without fracturing. As a result, 1070 aluminum may be superior to 1060 aluminum in applications requiring higher ductility.

Property	1060-H22 Aluminum	1070-H22 Aluminum
Elastic (Young's, Tensile) Modulus, x 10⁶ psi	9.9	9.9
Elongation at Break, %	6.8	10
Fatigue Strength, x 10³ psi	7.3	7.1
Poisson's Ratio	0.33	0.33
Shear Modulus, x 10⁶ psi	3.7	3.7
Shear Strength, x 10³ psi	7.6	7.6
Tensile Strength: Ultimate (UTS), x 10³ psi	13	13
Tensile Strength: Yield (Proof), x 10³ psi	9.7	9.1

1060 H22 Aluminum and 1070-H22 Aluminum Thermal Properties

Thermal Conductivity: 1060-H22 aluminum and 1070-H22 aluminum are very similar in most thermal properties, but 1060 aluminum has slightly higher thermal conductivity. Specifically:

The thermal conductivity of 1060-H22 is 140 BTU/h-ft-°F.

The thermal conductivity of 1070-H22 is 130 BTU/h-ft-°F.

This difference indicates that 1060 aluminum has slightly better thermal conduction performance, making it more suitable for applications requiring higher thermal conductivity efficiency.

Property	1060-H22 Aluminum	1070-H22 Aluminum
Latent Heat of Fusion, J/g	400	400
Maximum Temperature: Mechanical, °F	340	340
Melting Completion (Liquidus), °F	1210	1190
Melting Onset (Solidus), °F	1190	1180
Specific Heat Capacity, BTU/lb-°F	0.22	0.22
Thermal Conductivity, BTU/h-ft-°F	140	130
Thermal Expansion, µm/m-K	24	23

1060 H22 Aluminum and 1070-H22 Aluminum Electrical Properties

The electrical conductivity of 1060-H22 aluminum and 1070-H22 aluminum is very similar. In terms of electrical conductivity, 1060 aluminum has a slight edge, especially in terms of volume and weight conductivity. This makes 1060 aluminum potentially perform better than 1070 aluminum in some electrical and conductive applications, particularly in cases where high-efficiency conductivity is required.

Property	1060-H22 Aluminum	1070-H22 Aluminum
Electrical Conductivity: Equal Volume, % IACS	62	61
Electrical Conductivity: Equal Weight (Specific), % IACS	210	200

Otherwise Unclassified Properties

Property	1060-H22 Aluminum	1070-H22 Aluminum
Base Metal Price, % relative	9.5	9.5
Density, lb/ft³	170	170
Embodied Carbon, kg CO₂/kg material	8.3	8.3
Embodied Energy, x 10³ BTU/lb	67	67
Embodied Water, gal/lb	140	140

Common Calculations

Property	1060-H22 Aluminum	1070-H22 Aluminum
Resilience: Ultimate (Unit Rupture Work), MJ/m³	5.6	8.0
Resilience: Unit (Modulus of Resilience), kJ/m³	33	29
Stiffness to Weight: Axial, points	14	14
Stiffness to Weight: Bending, points	50	50
Strength to Weight: Axial, points	9.1	9.1
Strength to Weight: Bending, points	16	16
Thermal Diffusivity, mm²/s	96	94
Thermal Shock Resistance, points	4.0	3.9

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