EN AW aluminum alloy is the official naming method for wrought aluminum alloy under the European standard system and is widely used in industrial manufacturing. The following are its core points:
1. Naming rules and standards
"EN AW" prefix: It consists of "EN" and "AW" (Aluminum Wrought, wrought aluminum alloy), which means that it complies with the alloy specifications established by the European Committee for Standardization.
Digital/letter code: The subsequent code (such as 2024, AlMgSi1) corresponds to the specific alloy composition and performance classification. For example, "2xxx" in EN AW-2024 means that copper (Cu) is the main alloying element. 24.
2. Composition and performance characteristics EN AW aluminum alloy achieves diversified performance by adding different metal elements:
High strength: For example, EN AW-2024 (containing copper) and EN AW-AlZn4Mg3 (containing zinc and magnesium) have high specific strength and are suitable for aviation structural parts.
Corrosion resistance: EN AW-AlMgSi1 (containing magnesium and silicon) and EN AW-ALMg3MnA (containing magnesium and manganese) have excellent environmental corrosion resistance due to the optimization of alloy elements.
Processing performance: Most alloys support extrusion, rolling, forging and other processes. For example, EN AW-AlZnMgCu1.5 can further improve hardness and fatigue resistance through heat treatment (such as T6).
3. Main application areas Aerospace: EN AW-2024, EN AW-AlZn4Mg3, etc. are used for aircraft skins, frames and other load-bearing parts.
Automobile manufacturing: Driven by the demand for lightweight, EN AW-AlMgSi1 and others are used for body structures and engine components.
Architecture and shipbuilding: Alloys with strong corrosion resistance (such as EN AW-ALMg3MnA) are suitable for long-term exposure environments such as curtain walls and hulls.
4. Processing and treatment technology
Heat treatment: Solution treatment (such as T6) can improve alloy strength, and aging treatment can optimize microstructural stability.
Surface treatment: Some alloys need to be anodized or coated to enhance wear resistance and decorative properties.
5. Correspondence with other standards
EN AW series can correspond to international standards (such as American AA standards), for example, EN AW-AlMgSi1 corresponds to AA 6082, and EN AW-2024 corresponds to AA 2024.
