EN AW-4047
EN AW-4047Near-eutectic Al-Si brazing alloy — Si 11-13%. Lowest melting point (~577°C eutectic) in the Al-Si system = ideal brazing filler. Superior fluidity and joint fill vs 4043 (5% Si). Used as brazing sheet clad layer and wire for CAB (Controlled Atmosphere Brazing) of heat exchangers, radiators, evaporators, and condensers. Also used for welding Al-Si castings.
International equivalents
| Flag | Standard | Country | Grade | Number | Match |
|---|---|---|---|---|---|
| 🇺🇸 | AA | USA | AA 4047 / UNS A94047 | A94047 | REF |
| 🇪🇺 | EN | Europe | EN AW-4047 / AlSi12(A) | EN AW-4047 | 100% |
Sources: AA, EN 573-3
Chemical composition comparison (wt%)
Side-by-side: EN AW-4047 (EN 573-3) vs EN AW-4047 / AlSi12(A) (EN) (EN 573-3)
| Element | EN AW-4047 (EN 573-3) | EN AW-4047 / AlSi12(A) (EN) | Overlap |
|---|---|---|---|
| Si | — | 11–13% | — |
| Cu | — | 0–0.3% | — |
Mechanical properties
Compatibility verdict
EN AW-4047 and EN AW-4047 / AlSi12(A): 100% composition match
Related materials
EN AW-6082
3.2315High-strength structural aluminium alloy in the Al-Mg-Si family. One of the strongest 6xxx series alloys due to manganese addition. Replaced 6061 in many European applications. Used for trusses, bridges, cranes, transport, scaffolding, and marine applications. Heat treatable (T6/T651).
EN AW-5083
3.3547The highest-strength non-heat-treatable aluminium alloy. Excellent corrosion resistance (especially seawater), good weldability. Standard alloy for shipbuilding, offshore, pressure vessels, cryogenic applications, and armour plate. Not for continuous service above 65°C under stress (SCC risk).
EN AW-7075
3.4365The classic high-strength aerospace aluminium alloy. Al-Zn-Mg-Cu composition provides the highest strength of all common aluminium alloys in T6 temper. Poor weldability and limited corrosion resistance. Used for aircraft structures, M16 rifle receivers, rock climbing gear, and precision mold plates.
Export this comparison as PDF
Professional datasheet with equivalents, composition, and properties. Ready for your QM documentation.
Download PDF — €4.90Included with PRO subscription