2024 aluminum flat bar is a high-strength Al-Cu-Mg alloy bar supplied in rectangular cross-section. Known for excellent fatigue resistance and machinability, it is widely used in aerospace structural components, fittings, and precision-machined parts. Linsy Aluminum offers 2024 flat bar in O, T3, T4, T351, and T851 tempers with full mill test certificates.
Formulaires disponibles : flat bar (rectangular cross-section)
Tempéraments courants : O / T3 / T4 / T351 / T851
Assistance technique : CNC machining / milling / cutting / anodizing
Documents relatifs à la qualité : Rapport MTC joint à chaque commande
2024 aluminum flat bar is a rectangular cross-section bar made from 2024 aluminum alloy, a heat-treatable Al-Cu-Mg alloy. The flat bar form factor is particularly suited for structural brackets, supports, guide rails, and machined components where a rectangular profile is required. 2024 alloy provides one of the highest strength-to-weight ratios among aluminum alloys, making it a preferred material in aerospace and high-performance engineering applications.
Flat bars are typically supplied in T3 and T351 tempers for maximum strength, or in O temper for applications requiring subsequent forming. The T851 temper is used for components requiring elevated temperature stability.
| Alliage | Tempérer | Largeur (mm) | Épaisseur (mm) | Longueur (mm) |
|---|---|---|---|---|
| 2024 Flat Bar | O, T3, T4, T351, T851 | 10-300 | 3-80 | 1000-6000 |
| Dimensions personnalisées disponibles sur demande | ||||
| Largeur (mm) | Épaisseur (mm) | Application type |
|---|---|---|
| 25 | 5 | Structural brackets, supports |
| 40 | 8 | Machine parts, guide rails |
| 50 | 10 | Fittings, mounting plates |
| 75 | 15 | High-stress structural components |
| 100 | 20 | Aerospace structural parts |
| 150 | 30 | Heavy-duty brackets, tooling |
| Standard | Désignation |
|---|---|
| AA (États-Unis) | 2024 |
| EN (Europe) | EN AW-2024 |
| DIN (Allemagne) | 3.1355 / AlCu4Mg1 |
| ISO | AlCu4Mg1 |
| UNS | A92024 |
| GB (Chine) | 2A12 |
| JIS (Japon) | A2024 |
| Élément | Contenu (%) |
|---|---|
| Si | 0,50 max |
| Fe | 0,50 max |
| Cu | 3.8-4.9 |
| Mn | 0.30-0.90 |
| Mg | 1.2-1.8 |
| Cr | 0,10 max |
| Zn | 0,25 max |
| Ti | 0,15 max |
| Autres (chacun) | 0,05 max |
| Autres (total) | 0,15 max |
| Al | Équilibre |
| Propriété | 2024-O | 2024-T3 | 2024-T351 | 2024-T851 |
|---|---|---|---|---|
| Résistance à la traction, ultime (MPa) | 186 | 483 | 462 | 517 |
| Résistance à la traction, limite d'élasticité (MPa) | 76 | 345 | 324 | 455 |
| Résistance au cisaillement (MPa) | 124 | 283 | 262 | 276 |
| Allongement à la rupture (%) | 20 | 18 | 17 | 7 |
| Dureté (Brinell) | 47 | 120 | 120 | 137 |
| Tempérer | Caractéristiques | Typical Use for Flat Bar |
|---|---|---|
| O | Recuit, formabilité maximale, résistance minimale | Forming, bending, subsequent machining before heat treatment |
| T3 | Solution heat-treated, cold worked, naturally aged. Highest strength | Aerospace brackets, structural supports, fittings |
| T4 | Traitement thermique en solution, vieillissement naturel (sans déformation à froid) | Components requiring moderate forming after heat treatment |
| T351 | Traitement thermique en solution, détensionnement par étirement, vieillissement naturel | Machined aerospace parts, precision components |
| T851 | Traitement thermique en solution, détente, vieillissement artificiel | High-temperature structural applications |
2024 flat bar delivers exceptional strength in T3 and T351 tempers, with ultimate tensile strength up to 483 MPa. This makes it suitable for load-bearing structural components where weight reduction is critical.
2024 flat bar machines very well in T3 and T351 conditions. The rectangular profile provides stable work-holding for CNC milling, drilling, and surface machining operations, producing excellent surface finish and dimensional accuracy.
The alloy exhibits excellent fatigue resistance, particularly in T3 temper. This is essential for flat bar components subject to cyclic loading in aerospace and mechanical applications.
2024 has lower corrosion resistance compared to 6xxx and 7xxx series alloys. For corrosive environments, anodizing or protective coating is recommended. In aerospace applications, Alclad protection or chromate conversion coating is commonly applied.
2024 aluminum flat bar can be further processed to meet specific requirements:
For forming and bending operations, O temper flat bar is recommended. After forming, the material can be solution heat-treated and aged to achieve T3 or T4 properties.
Every 2024 aluminum flat bar order from Linsy Aluminum is accompanied by a Mill Test Certificate (MTC) documenting chemical composition, mechanical properties, and dimensional verification. SGS test reports are available on request for independent third-party verification.
Linsy Aluminum operates under ISO 9001 (quality management), ISO 14001 (environmental management), and ISO 45001 (occupational health and safety) certifications. Dimensional inspection, straightness verification, and surface defect examination are performed on all flat bar products.
Linsy Aluminum is a Shenzhen-based aluminum supplier with over 20 years of experience. We supply 2024 aluminum flat bar in standard and custom dimensions, with full traceability from ingot to finished product.
Our capabilities include CNC machining, cutting, and surface finishing. Typical custom lead time is 10-60 days depending on dimensions, quantity, and processing requirements. We export to Europe, South Africa, Brazil, Singapore, Turkey, Japan, South Korea, and other markets.
Contact our technical team for temper selection guidance, custom size quotations, and material certifications.
What sizes are available for 2024 aluminum flat bar?
Standard widths range from 10 to 300 mm, thicknesses from 3 to 80 mm, and lengths from 1000 to 6000 mm. Custom dimensions are available on request.
What is the difference between flat bar and rectangular bar?
Flat bar and rectangular bar refer to the same product form: a bar with a rectangular cross-section where the width is significantly greater than the thickness.
Can 2024 flat bar be bent or formed?
In the O (annealed) temper, 2024 flat bar can be bent and formed. After forming, it can be solution heat-treated and aged to achieve T3 or T4 properties. Forming in T3 or T351 tempers is not recommended due to cracking risk.
Is 2024 flat bar weldable?
Conventional arc welding is not recommended for 2024 due to solidification cracking. Mechanical fastening (riveting, bolting) is the standard joining method.
What is the surface finish of as-supplied flat bar?
Standard supply condition is mill finish. Anodizing, polishing, and other surface treatments are available on request.
Quelle est la quantité minimale de commande ?
MOQ varies by size and temper. Contact our sales team for specific requirements.
Quel est le délai de livraison habituel ?
Custom orders typically ship in 10-60 days depending on dimensions, quantity, and processing.
Quelles sont les certifications proposées ?
Linsy Aluminum est certifiée ISO 9001, ISO 14001 et ISO 45001. Chaque commande est accompagnée de rapports MTC. Les rapports d'essais SGS sont disponibles sur demande.
Do you provide cutting to size?
Yes, we offer cutting to custom lengths as well as CNC machining services.
Exportez-vous à l'international ?
Oui, nous exportons vers l'Europe, l'Afrique du Sud, le Brésil, Singapour, la Turquie, le Japon, la Corée du Sud et d'autres marchés.
Avantages pour Linsy
Linsy Aluminum est un fournisseur de premier plan de produits de transformation de l'aluminium, au service de diverses industries, notamment l'aérospatiale, l'ingénierie générale, l'automobile, la marine, la construction navale et d'autres applications industrielles spécialisées.
Nous nous engageons à respecter les normes les plus strictes en matière de qualité et de responsabilité environnementale, comme en témoignent nos certifications : ISO 9001:2008， ISO 14001:2004 et SGS.
