2A02 aluminum alloy

Table of Contents

2A02 aluminum alloy

2A02 aluminum alloy is an alloy with higher strength in duralumin. Its characteristics are: it has high strength at room temperature, and it also has high thermal strength. It belongs to heat-resistant duralumin. 2A02 aluminum alloy has high plasticity during thermal deformation, and has a tendency to form coarse-grained rings in extruded semi-finished products. It can be strengthened by heat treatment and used in the state of quenching and artificial aging. Compared with 2A70 and 2A80 heat-resistant forged aluminum, the corrosion stability is better, but it has a tendency of stress corrosion cracking; the weldability is slightly better than 2A70, and the machinability is good.

【chemical composition】2A02 aluminum alloy

Silicon Si: 0.30
Iron Fe: 0.30
Copper Cu: 2.6-3.2
Magnesium Mg: 2.0-2.4
Zinc Zn: 0.10
Manganese Mn: 0.45-0.7
Titanium Ti: 0.15
Aluminum Al: balance

【mechanical properties】2A02 aluminum alloy

Tensile strength σb (MPa): ≥430
Conditional yield strength σ0.2 (MPa): ≥275

Heat Treatment Specifications

1) Rapid annealing: heating at 350-370°C; depending on the effective thickness of the material, the holding time is 30-120min; air or water cooling.
2) Quenching and aging: quenching at 495~505℃, water cooling; artificial aging at 165~175℃, 10~16h, air cooling.

Picture of Author: Mose Li

Author: Mose Li

Director of Project Engineering at 3Q Machining

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