This document introduces the features and characteristics of Baosteel's hot-dip Al-Zn coated steel sheet, including its service life, electrochemical protection, and welding performance. The hot-dip Al-Zn coated steel sheet has the features of high durability, electrochemical protection, and high decorative appearance.
This guide introduces Baosteel's hot‑dip Al‑Zn coated steel sheet, explaining its alloy‑coated structure, composition and the benefits of combining aluminium and zinc. The coating contains about 55% Al, 1.6% Si and the remainder Zn, providing both physical durability and electrochemical corrosion protection.
The document also presents performance data such as corrosion resistance, welding performance and thermal resistance, and includes ordering information, product standards, dimensions and contact details for Baosteel sales offices worldwide.
| Aluminium content in coating | ≈55 % |
|---|---|
| Zinc content in coating | remaining percentage |
| Electrochemical protection | Good |
| Welding performance | Good (Al‑Zn), Fair (GALVA‑LUME) |
| Service life compared to GI sheet | 1‑5 times longer |
| Salt spray test duration | 240 h / 1200 h |
The coating consists of about 55 % aluminium, 1.6 % silicon and the remaining portion is zinc.
The Al‑Zn coated sheet shows better corrosion resistance and a service life that is 1‑5 times longer than a comparable GI sheet.
The order form asks for product name, standard, grade, specifications (thickness, width, diameter), coating weight, surface treatment, quality, weight and packaging details.