2024
2024 is a typical hard aluminum alloy in the aluminum-copper-magnesium system. Its composition is relatively reasonable and its overall performance is good. many countries Every family produces this alloy, which is the most widely used among hard aluminum. The characteristics of this alloy are: high strength and certain heat resistance Resistant and can be used as working parts below 150°C.
At temperatures above 125°C, 2024 alloy is stronger than 7075 alloy Still high. The formability is relatively good in the hot state, annealed and newly quenched states. The strengthening effect of heat treatment is significant, but the heat treatment The treatment process requirements are strict. The corrosion resistance is poor, but it can be effectively protected by coating with pure aluminum; cracks are prone to occur during welding, but It can be welded or riveted using special technology.
Widely used in aircraft structures, rivets, truck wheels, propeller elements parts and other structural parts.
Content
Chemical composition of 2024(%)
| Chemicai composition | |
|---|---|
| Si | 0.5 |
| Fe | 0.5 |
| Cu | 3.8-4.9 |
| Mn | 0.3-0.9 |
| Mg | 1.2-1.8 |
| Zn | 0.1 |
| Ti | 0.25 |
| Ni | 0.15 |
| other impurity（singleness） | 0.05 |
| other impurity（sum） | 0.15 |
| AL | remainder |
Physical properties of 2024
| Aluminum alloy grades and status | 2024-T4 |
|---|---|
| Tensile Strength Rm/Mpa | 425 |
| Yield Strength Rp0.2/Mpa | 275 |
| Elongation % | 14 |
| Hardness/HBWα | 120 |
| Density（20℃)（g/cm3） | 2.8 |
Applications of 2024
2024 Aluminum is mainly used in automobile and truck wheels, molds, rivets, components, aircraft frames, precision parts,Manufacturing of propeller components and various other structural parts (but not stampings and forgings) such as skeleton parts on aircraft, etc.Skins, bulkheads, wing ribs, wing spars, rivets and other working parts below 150℃.
