When considering different alloys for an extrusion project, that is necessary to recognize the nature of every alloy and how the compares to the alternatives.

You are watching: 2024-t4 vs 2024-t351

2024 aluminum is one alloy that is frequently used in the aerospace industry. The is a high-strength alloy perfect for projects requiring a high strength-to-weight ratio and excellent tiredness resistance. Together such, the is primarily uncovered in wing and also fuselage structures that frequently come under tension.

This alloy is often extruded, but it can also be uncovered in sheet and also plate form.

Here are Some General attributes of 2024

This alloy functions high strength, negative corrosion resistance and also weldability, great workability, and fair machinability. Download a PDF of its characteristics and material properties.


CharacteristicAppraisal
StrengthHigh
Corrosion ResistancePoor
Weldability & BrazabilityPoor
WorkabilityGood
MachinabilityFair

As a 2000 series alloy, 2024 aluminum is typically heat treated to boost its strength.

Material properties of 2024-T3, 2024-T4/T351, 2024-T851 Aluminum

Some the the most usual tempering alternatives for this alloy space T3, T4/T351, and T851.

Physical nature of 2024 Aluminum

Here we can see the thickness of the alloy. Keep in mind that over there is no distinction in density in between the various tempers.


Property2024-T32024-T4, T3512024-T851
Density2.78 g/cc | 0.100 lb/in³2.78 g/cc | 0.100 lb/in³2.78 g/cc | 0.100 lb/in³

Mechanical properties of 2024 Aluminum

Here we deserve to see the tensile strength, yield strength, and modulus the elasticity because that the alloy in the T3, T4/T351, and T851 conditions.


Property2024-T32024-T4, T3512024-T851
Tensile Strength483 MPa | 70000 psi469 MPa | 68000 psi>=455 MPa | 66000 psi
Yield Strength345 MPa | 50000 psi324 MPa | 47000 psi>=400 MPa | 58000 psi
Modulus the Elasticity73.1 GPa| 10600 ksi73.1 GPa| 10600 ksi72.4 GPa | 10500 ksi

Thermal nature of 2024 Aluminum

Here we have the right to see part thermal nature of the alloy including the coefficient of thermal expansion and thermal conductivity. The T3, T4/T351, and also T851 problems are included.


Property2024-T32024-T4, T3512024-T851
Coefficient the Thermal growth
20.0 - 100 °C Temp
23.2 µm/m-°C | 12.9 µin/in-°F23.2 µm/m-°C | 12.9 µin/in-°F23.2 µm/m-°C | 12.9 µin/in-°F
Thermal Conductivity121 W/m-K | 840 BTU-in/hr-ft²-°F121 W/m-K | 840 BTU-in/hr-ft²-°F151 W/m-K | 1050 BTU-in/hr-ft²-°F

Note: The material properties over have to be pulled from Matweb, here, here, and here. Please note that they can not be 100% verified.

Now, you may be wondering around the composition of the 2024 alloy.

Chemical ingredient of 2024 Aluminum

Like various other 2000 collection alloys, 2024 is generally alloyed with copper. It additionally contains manganese and magnesium and also can periodically contain smaller amounts of silicon, iron, chromium, zinc and/or titanium. Right here we can see the guidelines for its chemical composition.


ElementMinimum %Maximum %
SiliconNo Min0.5
IronNo Min0.5
Copper3.84.9
Manganese0.50.6
Magnesium1.21.8
ChromiumNo Min0.1
ZincNo Min0.25
TitaniumNo Min0.15
Other ElementsNo Min0.05 each0.15 in total

Now the we’ve seen the chemical composition that 2024, let’s talk around how the alloy compare to some other vital options.

Comparing 2024 Aluminum to various other Alloys

The 2024 alloy is frequently chosen because that applications that require high strength, but you may be considering other choices for your details application. Below are some other usual alloys that space often taken into consideration as alternatives.

2024 vs 6061

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The 7075 alloy, prefer 2024, is really common in the aerospace industry. The key reason because that this is that it is just one of the the strongest aluminum alloys available. V precipitation hardening, the can achieve a tensile toughness of 83,000 psi and also a yield strength of 73,000 psi, stronger than 2024. In regards to applications, 7075 is suited to applications that call for high stress/strain resistance. Whereas, 2024 is suited to applications where high cyclic exhaustion resistance is required.

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Summary

The 2024 aluminum alloy is often used in plane structural applications because of its high strength and also fatigue resistance. It is stronger than 6061 however less versatile. If 7075 is suited to applications that need high stress and also strain resistance, 2024 has high cyclic tiredness resistance.