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The 2000 series aluminum alloys (Al-Cu-Mg, "Duralumin") are heat-treatable, high-strength materials, second only to the 7000 series in tensile strength. They are widely known as aviation-grade aluminum for critical structural applications.
Product Specifications
Product Name
2000 Series Aluminum Alloy Bar
Brand New
Yes, non-secondary
Tolerance
±1%
Surface Treatment
Mill Finish
Standard
ASTM
Grade
2000 Series
Head Code
Round
Application
Industry, etc.
Delivery Time
8-14 days
Customized Support
OEM
Technique
Cold Drawn
Material
Aluminum Alloy
Model Number
1000, 3000, 5000, 6000 Series
Shape
Round
Place of Origin
Other
Advantage
Durable, Anti-Corrosion
Material Status
Large stock or fast new production
Package
Standard Package
Processing Service
Bending, Decoiling, Welding, Punching, Cutting
Payment
T/T 30% Deposit + 70% Advance
Product Overview
The 2000 series aluminum alloys (Al-Cu-Mg, "Duralumin") are heat-treatable, high-strength materials, second only to the 7000 series in tensile strength. They are widely known as aviation-grade aluminum for critical structural applications.
Core Composition & Grades
Main alloying elements: Copper (Cu: 3.8-5.0%) + Magnesium (Mg: 1.2-1.8%), plus Mn/Ti for grain control
Common grades:
2024 (Al-4.4Cu-1.5Mg-0.6Mn): The most popular high-strength grade
2A12 (LY12): Chinese equivalent of 2024
2017 (2A11): Medium-strength, good formability
2011: Free-cutting grade with Pb/Bi for precision machining
2219: High-temperature resistant, for aerospace fuel tanks
Key Properties
High strength: Tensile strength 420-480 MPa (T3/T4), comparable to some steels
Heat-treatable: Strength enhanced via solution treatment + aging (T3/T4/T6)
Good machinability: Excellent for CNC, threading, and precision parts (especially 2011)
Moderate corrosion resistance: Prone to intergranular corrosion; requires anodizing, cladding, or painting
Limited weldability: Susceptible to cracking; riveting/bolting preferred
Automotive: High-performance engine parts, transmission components, and racing car structures
Industrial: High-strength fasteners, precision machinery parts, and structural components requiring light weight and high strength
Standards & Specifications
International: ASTM B211, AMS 4120, EN 573-3, JIS H4100
Chinese: GB/T 3191, GB/T 3880.2
Advantages & Disadvantages
Advantages
Ultra-high strength-to-weight ratio
Excellent fatigue resistance
Superior machinability
Mature production and global supply
Disadvantages
Higher cost than 1000/6000 series
Poor corrosion resistance without surface treatment
Not ideal for welding
Summary
2000 series aluminum bars/rods are the premium choice for high-strength, lightweight structural applications, especially in aerospace and defense. Their combination of strength, machinability, and reliability makes them irreplaceable in critical engineering scenarios.
