| 品牌 | 西南铝/美铝Alcoa |
| 规格 | 齐全 |
| 材质 | 2024/2A12 |
| 产地 | 国产/进口 |
2XXX series alloys contain copper as the main alloying element, often in combination with magnesium and silicon.
Strength:
Strength is developed through solution treatment and natural ageing (T351, T451) or artificial age hardening (T651, T851). Strength levels in the naturally aged alloys may be further increased by artificial ageing, but this reduces fatigue properties and toughness.
Welding:
With the exception of a few specialised alloys the 2XXX series alloys are not generally weldable by fusion welding.
Corrosion:
2XXX alloys are susceptible to corrosion and may be require protective surface treatments such as anodising or painting.
2XXX alloys are generally used where good levels of strength and toughness are required. The most widely used alloys in this series are 2014A, 2017A and 2024.
Applications include:
Machined parts
Truck wheels
Load cells
2xxx series alloys technical data
Alcoa Europe only supply plate that exceeds the
requirements issued by the major specifying authorities
e.g. European Standards (a summary of the main
requirements of EN485 is available on request).
2014/2014A, 2017A AND 2024
2014 and 2014A are commonly supplied in the T651
temper, offering a higher level of strength than 6XXX, and
good toughness. Alcoa can also supply 2014/2014A in
O condition, which gives good formability and permits
further strengthening by means of heat treatment.
2017A and 2024 are characterised by high levels of
strength and toughness, allied to good fatigue
properties. Because they develop good levels of
strength through natural ageing they are usually
supplied in the T451 and T351 conditions respectively.
Strength in 2024 can be further increased by means of
artificially ageing, but this is achieved at the expense of
fatigue properties and toughness. Fatigue resistance is
higher in 2024 T351 compared to 2017A T451. These
alloys are often selected when fatigue is an important
consideration and are widely used for other engineering
applications.