5754 H111 Aluminum Plate Sheet for GIS Enclosures

In the critical infrastructure of electrical power transmission and distribution, GIS plays a vital role in ensuring safe, reliable, and compact substation operation. The enclosure housing this high-voltage equipment must meet exceptionally stringent requirements. 5754 H111 aluminum plate sheet as the premier material solution. This alloy offers a unique combination of properties that make it ideally suited for the demanding environment of GIS enclosures.

5754 H111 Aluminum Plate Sheet: The Material of Choice for Modern GIS Enclosures

Excellent Corrosion Resistance: As an aluminum-magnesium (Al-Mg) alloy, 5754 develops a stable, self-healing oxide layer. It offers outstanding resistance to atmospheric corrosion, including in coastal or industrial environments, far surpassing standard carbon steel and minimizing the need for protective coatings. This ensures long-term durability and minimal maintenance.

High Strength-to-Weight Ratio: 5754 H111 provides significantly higher strength than pure aluminum (minimum 0.2% proof strength of ~100 MPa) while being approximately one-third the weight of steel. This reduces the overall weight of the GIS bay, simplifying logistics, easing crane requirements during installation, and potentially lowering civil engineering costs.

Superior Formability and Weldability: The H111 temper offers an excellent balance, allowing the sheet to be readily formed into complex curved sections, shells, and housings without cracking. It also possesses very good weldability using common techniques like MIG and TIG welding. Welded joints retain good strength and corrosion resistance, which is critical for maintaining the gas-tight integrity of the enclosure.

Non-Magnetic & Excellent Shielding: Aluminum is inherently non-magnetic. This prevents magnetic hysteresis losses and makes 5754 ideal for applications where magnetic interference must be avoided. As a conductive metal, it provides effective electromagnetic shielding, safely grounding the electric field within the GIS.

Surface Finish & Sustainability: 5754 aluminum offers a clean, aesthetically pleasing appearance that can be anodized or painted for further protection or color-coding. At the end of its long service life, the aluminum is 100% recyclable with a fraction of the energy required for primary production, supporting sustainable lifecycle management.

Mingtai Aluminum 5754 aluminum plate sheet specifications

Thickness:6mm – 80mm

Width: 1000mm – 2650mm

Length: 2000mm – 16000mm or according to specified dimensions

Delivery form: Hot-rolled sheets/coils (after slitting and leveling)