Aluminum 7075-T6: Aerospace-Strength Al-Zn-Mg-Cu Alloy — Aircraft Structures & High-Stress Parts vs Aluminum 2024-T3: High-Strength Aerospace Structural Alloy
Side-by-side engineering comparison of Aluminum 7075-T6: Aerospace-Strength Al-Zn-Mg-Cu Alloy — Aircraft Structures & High-Stress Parts (ASTM B209 / AMS 4045 / AMS-QQ-A-250/12) and Aluminum 2024-T3: High-Strength Aerospace Structural Alloy (AMS 4037). Compare mechanical properties, chemical composition, density, yield strength, international equivalents, and typical applications to select the right material for your project.
Quick Verdict
7075-T6 offers 503 MPa yield — the highest strength among common aluminum alloys — ideal for aerospace structural components, high-performance bicycle frames, and tooling plates where strength is the primary design driver. 2024-T3 provides 345 MPa yield with superior fatigue crack growth resistance and damage tolerance, making it the standard for aircraft fuselage skin, wing structures, and repair patches. 7075 for maximum strength; 2024 for fatigue-critical and damage-tolerant aerospace applications.
Maximum strength-to-weight ratio for aerospace structural applications
Superior fatigue resistance and damage tolerance for aircraft skin and wing structures
Quick Comparison
| Property | Aluminum 7075-T6: Aerospa | Aluminum 2024-T3: High-St |
|---|---|---|
| Standard | ASTM B209 / AMS 4045 / AMS-QQ-A-250/12 | AMS 4037 |
| Category | Aluminum Alloy | Aluminum Alloy |
| Density | 2.81 g/cm³ | 2.78 g/cm³ |
| Yield Strength | 503 MPa (73 ksi) typical for plate ≤25 mm | 345 MPa |
| Tensile Strength | 572 MPa (83 ksi) typical for plate ≤25 mm | 483 MPa |
| Key Applications | 7075-T6 is the highest-strength conventional aluminum alloy, with a specific strength (strength-to-weight ratio) compara... | Aluminum 2024-T3 is a heat-treatable Al-Cu-Mg alloy with strength approaching mild steel at one-third the weight. It is ... |
International Equivalents
| Aluminum 7075-T6: Ae Equivalents | Aluminum 2024-T3: Hi Equivalents |
|---|---|
| EN AW-7075 | EN AW-2024 |
| DIN AlZnMgCu1.5 | JIS A2024P |
| JIS A7075P | AlCu4Mg1 |
| GB 7A04 | — |
| Duralumin 7075 | — |
How to Choose
| Choose Aluminum 7075-T6: Aerospa when... | 7075-T6 offers 503 MPa yield — the highest strength among common aluminum alloys — ideal for aerospace structural components, high-performance bicycle frames, and tooling plates where strength is the primary design driver. |
| Choose Aluminum 2024-T3: High-St when... | 2024-T3 provides 345 MPa yield with superior fatigue crack growth resistance and damage tolerance, making it the standard for aircraft fuselage skin, wing structures, and repair patches. |
Decision Checklist: Which Is Right for You?
| Criterion | Aluminum 7075-T6: Ae | Aluminum 2024-T3: Hi |
|---|---|---|
| Maximum Strength-To-Weight Ratio For Aerospace Structural Applications | ✓ | |
| Superior Fatigue Resistance And Damage Tolerance For Aircraft Skin And Wing Structures | ✓ | |
| Higher yield strength | ✓ |
Frequently Asked Questions
What is the main difference between Aluminum 7075-T6: Aerospace-St and Aluminum 2024-T3: High-Strengt?
Aluminum 7075-T6: Aerospace-Strength Al-Zn-Mg-Cu Alloy — Aircraft Structures & High-Stress Parts (ASTM B209 / AMS 4045 / AMS-QQ-A-250/12) provides 503 MPa (73 ksi) typical for plate ≤25 mm yield strength at 2.81 g/cm³ density, while Aluminum 2024-T3: High-Strength Aerospace Structural Alloy (AMS 4037) delivers 345 MPa at 2.78 g/cm³. The choice depends on whether your application prioritizes maximum strength-to-weight ratio for aerospace structural applications or superior fatigue resistance and damage tolerance for aircraft skin and wing structures.
Can Aluminum 7075-T6: Aerospace-St be substituted for Aluminum 2024-T3: High-Strengt?
In many applications, these materials can be cross-referenced, but direct substitution should always be verified against specific project specifications, especially for maximum strength-to-weight ratio for aerospace structural applications, superior fatigue resistance and damage tolerance for aircraft skin and wing structures, and operating environment. Consult your engineer of record.