Samples available for most products
5% discount on bulk purchases
Global Sea Freight Services
Inquiries answered within 24 hours
4047 aluminum sheet is an aluminum alloy sheet containing 11-13% silicon, available in conformity to ASTM B209 standards. Contact us today for the best discount.
4047 aluminum sheet is a high-silicon aluminum alloy classified within the 4000 series. Its elevated silicon content gives the material a lower melting point and excellent fluidity during welding, making it ideal for applications that require smooth weld seams and strong, stable joints.
This alloy also offers good corrosion resistance and reliable mechanical strength, allowing it to perform well in demanding industrial environments. Although 4047 aluminum cannot be strengthened through heat treatment, it is a wrought aluminum alloy that provides consistent performance and easy processing.
Due to its balanced combination of weldability, durability, and structural reliability, 4047 aluminum sheet is widely used in welding, brazing, and joint-critical applications where quality and precision are essential.
| Product Name | 4047 Aluminum Sheet / Plate |
| Alloy Grade | 4047 |
| Temper | H18 |
| Thickness | 0.05 – 6.35 mm (0.002″ – 0.125″) |
| Width | 12 – 1600 mm |
| Length | Customized |
| Standards | ASTM B209 AMS 4185 ANSI / AWS A5.10 EN ISO 18273 |
| Surface Finish | Customized surface available |
| Processing Services | Cutting, Slitting, Leveling, Laser Cutting |
| Packaging | Aluminum + paper interleaving, export standard packaging |
| MOQ | 1 ton |
| Certification | EN 10204 3.1 |
| Silicon (Si) | 11.0 – 13.0 |
| Iron (Fe) | ≤ 0.80 |
| Copper (Cu) | ≤ 0.30 |
| Zinc (Zn) | ≤ 0.20 |
| Manganese (Mn) | ≤ 0.15 |
| Magnesium (Mg) | ≤ 0.10 |
| Other Elements (each) | ≤ 0.05 |
| Other Elements (total) | ≤ 0.15 |
| Aluminum (Al) | Balance |
| Ultimate Tensile Strength | 180 – 230 MPa |
| Yield Strength (0.2% Offset) | ≥ 150 MPa |
| Elongation | ≤ 3% |
| Brinell Hardness | ~ 60 – 75 HB |
| Density | 2.66 g/cm³ |
| Melting Range | 577 – 582 °C |
| Modulus of Elasticity | ~ 69 GPa |
4047 aluminum sheet contains a high silicon level of approximately 11–13%, which significantly improves metal flow during welding and brazing. This property helps reduce shrinkage, cracking, and other common welding defects, resulting in stronger and more reliable joints.
Thanks to its low melting point, 4047 aluminum is especially suitable for brazing processes and laser-welded cover plate applications, where precise temperature control is critical.
The alloy also offers excellent corrosion resistance, allowing it to maintain stable performance in harsh environments and under elevated temperatures. Its superior brazing and welding characteristics produce smooth, clean, and bright weld seams with minimal porosity or distortion.
In addition, 4047 aluminum demonstrates stable thermal performance, making it a dependable choice for heat dissipation and thermal management systems. Combined with its lightweight aluminum structure, this material meets the strict requirements of aerospace, electronics, and other high-precision engineering applications.
4047 aluminum sheet is produced under strict quality control standards to meet aerospace-grade performance requirements. It offers excellent heat resistance, stable mechanical properties, and consistent quality for high-precision applications.
The alloy’s high silicon content improves bonding and adhesion during welding and brazing while maintaining strong corrosion resistance and dimensional stability. These characteristics make 4047 aluminum alloy sheet a reliable material for environments that demand long-term performance and precision.
Typical applications include aerospace structural components and electronic parts, where lightweight strength and thermal stability are critical. It is also widely used in laser-welded cover plates that require clean weld seams and tight tolerances. In addition, 4047 aluminum plate is well suited for high-reliability thermal control and heat management systems.
