DX51D+AZ aluminum-zinc-plated materials, as a high-performance alloy-coated steel plate, have the following properties

1. Corrosion resistance
DX51D+AZ aluminum-zinc-plated materials have extremely strong corrosion resistance, which is mainly due to the aluminum-zinc alloy coating on its surface. When the zinc layer is worn, the aluminum will quickly form a dense aluminum oxide film, which effectively prevents the corrosive medium from further eroding the substrate. Therefore, DX51D+AZ aluminum-zinc-plated materials can still maintain good performance in harsh environments such as humidity and acid rain, and their normal service life can reach more than 25 years, which is 3-6 times longer than traditional galvanized sheets.

2. Heat resistance
Aluminum-zinc alloy has good heat resistance, and DX51D+AZ aluminum-zinc-plated materials can withstand high temperatures of more than 300 degrees Celsius without significant performance changes. This allows it to maintain good performance in high-temperature environments, such as chimney pipes, ovens, lighting fixtures, and fluorescent lamp covers.

3. Heat reflectivity
DX51D+AZ aluminum-zinc coating material has a high heat reflectivity, which is twice that of a galvanized steel sheet. This feature makes it an ideal thermal insulation material, which can effectively reduce the temperature inside the building and improve living comfort.

4. Economy
The density of aluminum-zinc alloy is lower than that of zinc, so under the same weight and coating thickness, the area of DX51D+AZ aluminum-zinc coating material is more than 3% larger than that of galvanized steel sheet, which has a higher cost performance.

The galvalume content of galvalume steel sheets is usually between 5% and 55%. Among them, 55% galvalume steel sheet is the mainstream product, and its surface is mainly composed of zinc and aluminum, with excellent anti-corrosion and mechanical properties.

H-beam, full name hot-rolled H-beam, is a steel with a cross-sectional shape similar to the English letter "H". Its cross-sectional design is optimized and its strength-to-weight ratio is reasonable. It is an efficient and economical cross-sectional profile. The inner and outer surfaces of the flange of H-beam are straight, with no slope or very small slope, which makes it have strong bending resistance in all directions. In addition, H-beam has a large section modulus and is lightweight, which can effectively save materials and reduce construction costs. Due to the reasonable cross-sectional shape of H-beam and the arrangement of all parts at right angles, its bending resistance is significantly better than that of I-beam, about 5%-10% higher. Under the same cross-sectional load, the structural weight of H-beam is 15%-20% lighter than that of traditional steel structures, which is conducive to reducing the self-weight of the building and increasing the usable area.

I-beam, also known as a steel beam, has an I-shaped cross-sectional shape and is a long strip of steel. I-beams are also divided into hot-rolled and light types, but no matter which type, the cross-sectional size is relatively high and narrow, resulting in a large difference in the moment of inertia on the two main axes. Although the cross-sectional shape of the I-beam also has a certain bending resistance, its torsion resistance is relatively poor due to its narrow flange. The cross-sectional shape of the I-beam has excellent performance under direct pressure and good tensile resistance.

I-beam is a kind of "I" shaped cross-section steel. The inner surface of the upper and lower flanges has an inclination, generally 1:6, which makes the flange thin outside and thick inside. As a result, the cross-sectional characteristics of the I-beam in the two main planes are very different, and it is difficult to exert the strength characteristics just mentioned in the application.

H-beam is a widely used profile in today's steel structure buildings. It has many differences compared with the I-beam. First, the flange, and second, the inner surface of the flange has no inclination, and the upper and lower surfaces are parallel. The cross-sectional characteristics of H-beams are significantly better than traditional I-beams, channel steels, and angle steels. The inner sides of the two outer edges of the H-beam have no inclination and are straight. This makes the welding and splicing of H-beams simpler than I-beams, and the mechanical properties per unit weight are better, which can save a lot of materials and construction time.