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Product Overview
Aluminum Round Bar 2024 is a high-strength aluminum-copper-magnesium (Al-Cu-Mg) alloy rod, one of the most important aerospace structural alloys. It offers very high strength, excellent fatigue resistance, and good machinability, making it the standard choice for aircraft structures, defense components, and high-performance mechanical parts. ملكنا 2024 aluminum round bars are available in T4, T3511 and T851 tempers, produced per ASTM B211, QQ-A-225/6, جيجابايت/ت 3191 and EN 755 standards, with diameters from 3 mm to 400 mm and custom lengths.
التركيب الكيميائي (%), ASTM B211 / جيجابايت/ت 3190
ال (الألومنيوم): 90.7 – 94.7 (balance)
النحاس (نحاس): 3.8 – 4.9 (principal alloying element)
ملغ (Magnesium): 1.2 – 1.8
مينيسوتا (المنغنيز): 0.3 – 0.9
و (السيليكون): 0.50 max
Fe (حديد): 0.50 max
Zn (Zinc): 0.25 max
سجل تجاري (Chromium): 0.10 max
ل (Titanium): 0.15 max
Others Each: 0.05 max, Others Total: 0.15 max
الخصائص الميكانيكية (Typical Values, Bar)
Temper T4 (Solution Heat Treated & Naturally Aged): قوة الشد 425-485 الآلام والكروب الذهنية, قوة الغلة 275-345 الآلام والكروب الذهنية, استطالة 10-14%
Temper T3511 (T4 + Stress Relieved, Extruded): قوة الشد 425-485 الآلام والكروب الذهنية, قوة الغلة 290-360 الآلام والكروب الذهنية, استطالة 10-12%
Temper T851 (T6 + Stress Relieved, High Strength): قوة الشد 455-510 الآلام والكروب الذهنية, قوة الغلة 370-420 الآلام والكروب الذهنية, استطالة 4-6%
Temper O (صلب): قوة الشد 185-220 الآلام والكروب الذهنية, قوة الغلة 75-125 الآلام والكروب الذهنية, استطالة 18-22%
صلابة: 120 HB (T4)
قوة التعب: 138 الآلام والكروب الذهنية (T4, at 5×10⁸ cycles)
قوة القص: 280 الآلام والكروب الذهنية (T4)
الخصائص الفيزيائية
كثافة: 2.78 g/cm³ (0.100 lb/in³)
Melting Point: 502-638درجة مئوية (935-1180درجة فهرنهايت)
توصيل حراري: 121 W/(m·K) at 25°C (T4)
الموصلية الكهربائية: 30% IACS (T4)
Electrical Resistivity: 5.7 × 10⁻⁸ Ω·m
Thermal Expansion Coefficient: 22.9 × 10⁻⁶/K (20-100درجة مئوية)
معامل المرونة: 73.1 المعدل التراكمي (10,600 ksi)
Poisson Ratio: 0.33
Specifications
المعايير: ASTM B211, QQ-A-225/6, جيجابايت/ت 3191, في 755-2 / 755-3, AMS 4120, JIS H4040
Diameter: 3 مم – 400 مم (0.12″ – 15.7″)
طول: 1 م – 12 م (custom cutting available)
حِدّة: ا, T4, T3511, T851
يكتب: Extruded bar, rolled bar, drawn bar, precision ground bar
صقل الأسطح: Mill finish, Bright, Drawn, Precision ground (h7-h9)
تسامح: Diameter: ±0.1mm (drawn) to ±1.0mm (extruded), Straightness: ≤1mm/m
Special: Aerospace certification documentation (AMS/QQ-A) available on request
Key Features & مزايا
- Very high strength – one of the strongest aluminum alloys, up to 485 MPa tensile
- Excellent fatigue resistance – proven performance in aircraft cyclic loading
- High strength-to-weight ratio – the aerospace structural benchmark
- Good machinability – suitable for complex precision-machined parts
- Heat treatable – T4 and T851 tempers for different strength levels
- Good toughness at moderate temperatures
- Consistent properties – solution heat treated and stress relieved
- Proven in service – decades of aerospace and defense applications
- Available in precision ground condition for exacting tolerances
- Full material certification and traceability
التطبيقات
- Aerospace – aircraft structural parts, fuselage frames, wing components, ribs
- مهمات الربط – aircraft bolts, مسامير, المسامير, studs
- Defense – missile components, ordnance parts, military hardware
- Mold tooling – mold bases, insert components, tool holders
- Precision machinery – التروس, shafts, valve stems, high-stress fasteners
- Automotive racing – suspension parts, drive components, chassis fittings
- Marine high-performance – propeller shafts, fittings (with protection)
- Sports equipment – high-performance bicycle and climbing components
- إلكترونيات – high-strength connectors, structural elements
- General engineering – high-strength shafts, pins, couplings, custom parts
Quality Control & Testing
Every batch of our 2024 aluminum round bars undergoes strict quality control:
Chemical Analysis: Spectrometer verification of Cu, ملغ, Mn content
Mechanical Testing: Tensile test, yield strength test, elongation test, hardness test (per temper)
Heat Treatment Verification: Hardness and conductivity testing to verify T4/T851 treatment
Ultrasonic Testing: UT inspection per AMS 2630 for aerospace applications (on request)
Dimensional Inspection: Diameter, roundness, straightness, and length checks
Surface Inspection: Visual inspection for scratches, laps, pits, and seams
Documentation: Mill Test Certificate (MTC), heat treatment records, material traceability, conformity certificate
التعبئة والتغليف & شحن
التعبئة والتغليف: Standard export packaging – bars bundled with steel straps, protective paper or film wrapping, wooden pallets or crates for heavy bundles; individual protective tubes for precision ground and aerospace-grade bars
Marking: سبيكة, حِدّة, مقاس, heat number, standard, manufacturer logo
Trade Terms: فوب, سيف, CFR, EXW, DDP
قسط: T/T (30% deposit, 70% before shipment), L/C at sight, Western Union, PayPal (sample orders)
مهلة: Standard sizes in stock – 3-7 أيام; Custom sizes – 15-30 أيام
موك: 200 kg for standard sizes; custom orders negotiable
Loading Port: Qingdao, Shanghai, Tianjin, Ningbo, or as requested
لماذا أخترتنا
With over 15 years of experience in aluminum manufacturing and export, we are a trusted supplier of 2024 aluminum round bars to aerospace, defense, and precision engineering companies in more than 50 بلدان. Our factory is equipped with modern extrusion, drawing, heat treatment, and precision grinding lines, ensuring aerospace-grade quality and consistency. We maintain large inventory of standard sizes and tempers for immediate delivery, and our experienced team can provide technical consultation, material certification support, and customized solutions for your specific applications. Contact us today for a competitive quote!
