ПРОГРЕСС
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. Наш 2024 aluminum round bars are available in T4, T3511 and T851 tempers, produced per ASTM B211, QQ-A-225/6, ГБ/Т 3191 and EN 755 standards, with diameters from 3 mm to 400 mm and custom lengths.
Химический состав (%), АСТМ Б211 / ГБ/Т 3190
Al (Алюминий): 90.7 – 94.7 (balance)
Cu (Медь): 3.8 – 4.9 (principal alloying element)
мг (Magnesium): 1.2 – 1.8
Мин. (Марганец): 0.3 – 0.9
И (Кремний): 0.50 max
Фе (Железо): 0.50 max
Зн (Zinc): 0.25 max
Кр (Chromium): 0.10 max
Из (Titanium): 0.15 max
Others Each: 0.05 max, Others Total: 0.15 max
Механические свойства (Typical Values, Bar)
Temper T4 (Solution Heat Treated & Naturally Aged): Предел прочности 425-485 МПа, Предел текучести 275-345 МПа, Удлинение 10-14%
Temper T3511 (Т4 + Stress Relieved, Extruded): Предел прочности 425-485 МПа, Предел текучести 290-360 МПа, Удлинение 10-12%
Temper T851 (T6 + Stress Relieved, High Strength): Предел прочности 455-510 МПа, Предел текучести 370-420 МПа, Удлинение 4-6%
Temper O (Отожженный): Предел прочности 185-220 МПа, Предел текучести 75-125 МПа, Удлинение 18-22%
Твердость: 120 HB (Т4)
Усталость сила: 138 МПа (Т4, at 5×10⁸ cycles)
Прочность на сдвиг: 280 МПа (Т4)
Физические свойства
Плотность: 2.78 g/cm³ (0.100 lb/in³)
Melting Point: 502-638° C. (935-1180° F.)
Теплопроводность: 121 W/(m·K) at 25°C (Т4)
Электрическая проводимость: 30% IACS (Т4)
Electrical Resistivity: 5.7 × 10⁻⁸ Ω·m
Thermal Expansion Coefficient: 22.9 × 10⁻⁶/K (20-100° C.)
Модуль упругости: 73.1 ГПа (10,600 кси)
Poisson Ratio: 0.33
Specifications
Standards: АСТМ Б211, QQ-A-225/6, ГБ/Т 3191, В 755-2 / 755-3, АМС 4120, JIS H4040
Diameter: 3 мм – 400 мм (0.12″ – 15.7″)
Длина: 1 m – 12 m (custom cutting available)
Характер: О, Т4, T3511, T851
Тип: Extruded bar, rolled bar, drawn bar, precision ground bar
Surface Finish: Отделка мельницы, Bright, Drawn, Precision ground (h7-h9)
Толерантность: Diameter: ±0.1mm (drawn) to ±1.0mm (extruded), Straightness: ≤1mm/m
Special: Aerospace certification documentation (AMS/QQ-A) available on request
Key Features & Преимущества
- 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
Приложения
- Aerospace – aircraft structural parts, fuselage frames, wing components, ribs
- Fasteners – aircraft bolts, винты, заклепки, studs
- Defense – missile components, ordnance parts, military hardware
- Mold tooling – mold bases, insert components, держатели инструментов
- Precision machinery – шестерни, shafts, valve stems, high-stress fasteners
- Automotive racing – suspension parts, drive components, chassis fittings
- Marine high-performance – propeller shafts, арматура (with protection)
- Sports equipment – high-performance bicycle and climbing components
- Электроника – high-strength connectors, structural elements
- General engineering – high-strength shafts, штифт, couplings, custom parts
Quality Control & Testing
Every batch of our 2024 aluminum round bars undergoes strict quality control:
Chemical Analysis: Spectrometer verification of Cu, мг, 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
Упаковка & Перевозки
Упаковка: 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: Сплав, характер, размер, heat number, стандартный, manufacturer logo
Trade Terms: FOB, CIF, CFR, EXW, DDP
Payment: T/T (30% deposit, 70% перед отправкой), L/C at sight, Western Union, PayPal (sample orders)
Время выполнения: Standard sizes in stock – 3-7 дни; Custom sizes – 15-30 дни
минимальный заказ: 200 kg for standard sizes; custom orders negotiable
Loading Port: Qingdao, Shanghai, Tianjin, Ningbo, or as requested
почему выбрали нас
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 countries. 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!
