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2A16 Aluminum sheet

This is a kind of heat-resistant duralumin, which is characterized by low strength at room temperature, but high creep strength at high temperature. The alloy has strength plasticity at hot state, no extrusion effect, and can be processed and strengthened.

Detailed introduction

About 2A16 Aluminum

This is a kind of heat-resistant duralumin, which is characterized by low  strength at room temperature, but high creep strength at high temperature. The  alloy has strength plasticity at hot state, no extrusion effect, and can be  processed and strengthened. The spot welding and roll welding have good welding  performance, but the tendency of crack formation is not obvious, the air  tightness of the weld is good, and the corrosion stability of the weld is low,  The corrosion stability of aluminum clad plate is good, and the corrosion  resistance of extruded semi-finished products is not high. In order to prevent  corrosion, anodic oxidation treatment or painting protection should be adopted:  the machinability is good.


Chemical Composition and Mechanical Property

Al

Si

Cu

Mg

Zn

Mn

Ti

Ni

Fe+Ni

Fe

Margin

≤0.30

6.00-7.00

≤0.05

≤0.10

0.40-0.80

0.10-0.20

---

---

≤0.30


Tensile  Strength(Mpa)

≥355

yield strength(Mpa)

≥235

EL(%)

≥12%

Density(g/cm³)

2.68


Heat treatment

1) Homogenization annealing: 515 ~ 530 ℃; The heat preservation time is  12-16h; The furnace is cold.

2) Complete annealing: 380-450 ℃; The heat preservation time was 30-120 min;  Air cooling.

3) Rapid annealing: 350-370 ℃; The heat preservation time was 30-120 min; Air  cooling.

4) Quenching and aging: quenching 530 ~ 540 ℃, water cooling; Artificial  aging (forging, sheet) 160 ~ 170 ℃, 10 ~ 16h, air cooling; Natural aging time at  room temperature is unlimited


Applications for 2A16

It is mainly used for parts working at 250-350 ℃, such as bearing, compressor  blade, disc, plate, welding parts working at normal temperature and high  temperature, such as container, airtight bin, etc.

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