The gauge thickness of different metal materials is different. The thickness of 24 gauge steel is 0.0239”-0.0274”, and 0.0274” is the thickness of the steel coated with paint.

24 gauge metal coil is anti-corrosion, fireproof, and highly durable, and the thickness will definitely affect the durability of the roof. It very suitable for climates with snow, wind and hail, and can withstand heavier snow loads.

The price of 24 gauge metal coil ranges from US$950-1250 per ton. Its price depends on the paint thickness, paint type and brand, the width of the roll, and whether there is back paint

29 gauge aluminum = 0.0113 Inches

29 gauge galvanized = 0.0172 Inches

29 gauge metal coils are thinner, lighter and cheaper than 26 gauge. It is commonly used for metal roofs. If the building is located in an area where it often snows, it is not recommended to use 29 gauge material because the roof may not be able to bear the weight of the snow.

29 gauge is suitable for the following situations:

Don’t care about cost, just want to use cheap materials.

If you don’t use this material for a long time, you don’t care about the longevity issue.

The use environment is a mild area, and there will be no violent storms and heavy snow.

Construction: Roofing, cladding, profiling, tiles, ceiling, Pre-engineered Buildings.

General industry: Pipes, enclosures for electrical equipment, HVAC system.

Appliances: Washing machines, tumble dryers, refrigerators.

Aluzinc is widely used in the field of roofs. Its excellent resistance to atmospheric oxidation can maintain color for a long time, and its excellent heat reflection has a good heat insulation effect on roofs.

Aluzinc’s natural glitter and good reflective properties are also common in the field of interior decoration ceilings. Aluzinc is non-flammable and does not release toxic substances.

The main production processes of the prepainted galvalume production line include pre-treatment process, coating process, and baking process.

Uncoiling – sewing – degreasing – chemical pretreatment – initial coating – initial coating baking – initial coating cooling – fine coating – fine coating baking – fine coating cooling – inspection – splitting – coiling

What does z200 mean?

z200 refers to the galvanized steel coil’s coating designation. Both surfaces of the steel coil have a triple spot test of 200 g/m2 and a single spot test of 170 g/m2. The guidance value for coating thickness per surface is 14 μm with a range of 10 to 20 and a density of 7, 1 g/cm3.

The coating conditions do not impact the quality of the galvanized steel coil, which could be in the form of many zinc crystals, no spangles, or without the presence of zinc crystals. The surface quality of z200 is X for the letter A under Normal spangle (N). The Minimized spangle (M) has a triple X under the letters A, B, and C.
Solidifying the zinc coating naturally leads to the formation of zinc crystals or without spangle as in the case of Normal spangle. Few or fewer visible spangles are the production of intervention in the solidification process of zinc coating, as shown in the results of the Minimized spangle.

This galvanized steel coil has a high coating of pure zinc (Z) with a base material of low carbon. It underwent several stages of chemical process to protect it from abrasion and corrosion even after years of use. The zinc coating prevents rust from attacking the surface and inner parts. The steel undergoes a hot bath of molten zinc to become a permanent part of it and not work as a sealer or paint.

The addition of z140 refers to the zinc coating mass, which has a greater mass for weldability, formability, and bending applications.  

What does z140 mean?

Z140 is a coating designation of the galvanized steel coils. Its minimum total coating mass for both surfaces have a symbol of g/m2 or grams per square meter. Under this designation, the steel got a triple spot test of 140 and a single spot test of 120 g/m2.

The guidance value for coating thickness per surface has a symbol μm, a ten (10) μm typical value with a range of 7 to 15. The surface quality of Z140 is X for the letter A under Normal spangle (N). The Minimized spangle (M) has a triple X under the letters A, B, and C.

The Normal spangle is the result of the zinc coating solidifying naturally to form zinc crystals or no spangle. The Minimized spangle is the product of influencing the solidification of the zinc coating to produce a few spangles, and some spangles are not visible.  

DX51D has a steel number 1.0917 with a chemical composition of 1,20 Manganese, 0,12 Phosporous, and 0,18 Carbon. Manufacturers immerse the prepared steel strip in a molten bath containing aluminum, zinc, and silicon. The molten bath’s composition is 1.6 percent silicon and 55 percent aluminum, and the balance goes to zinc. 

Steel with DX51D brand has high elasticity and flexibility that adheres to the BS EN 10346:2015 standard for continuously hot-dip coated low– carbon products.  

The continuous hot-dip coated steel has a nominal gauge of 0.57 to 2.00mm, minimum yield strength of 270 to 500MPa, and minimum elongation ratio of 22 percent.

Advantage 

DX51D AZ150 aluminum-zinc steel alloy has excellent bending and proofing quality due to its high aluminum and zinc contents. The steel is resistant to high temperatures of over 300 degrees C, which works similarly to the aluminum-plated steel plate with its high-temperature resistance of more than 300 degrees C.

The steel is flexible and malleable, making it easy to manipulate in making an oven, chimney tube, fluorescent lamp shade, and illuminator. 

The steel has a smooth and flat finish with high formability, which makes it easy to shear, stamp, and weld into various forms. It has superior surface conductivity and corrosion resistance when exposed to a harsh environment compared to galvanized steel sheets with the same thickness. 

Uses

DX51D AZ150 aluminum-zinc steel has multiple uses in various industries. It is an excellent material for roofing and walling in the building and construction industries. Its benefits include corrugated boards, flue pipes, gutters, painting basis sheets, and agricultural equipment for barns and granaries. 

The auto industry uses Aluzinc DX51D AZ150 for cold forming due to its superior cold-forming aptitude and corrosion protection. Its hard surface makes it a popular material for car parts as it can withstand abrasion. Its flexibility makes it a suitable material for welding due to its higher zinc coating.  

AZ150 galvalume is a high-quality, corrosion-resistant alloy commonly used in the construction and transportation industries. It’s highly resistant to rust, oxidation, and corrosion, making it an excellent choice for those who need to ship items or have them exposed to weather conditions.

What does AZ150 mean?

AZ150 means that in the triple spot test in the en 10346 standard, the minimum total coating mass on both surfaces of the aluminum-zinc alloy coating is 150g per square meter. Equivalent to Total Both Sides in ASTM a792 standard is 0.50 oz/square foot.

AZ150 coating thickness

AZ150 coating single surface coating thickness is 18 microns, double surface coating thickness is 36 microns.

This steel’s coating alloy is made up of 55% aluminium, 43.4% zinc, and 1.6% silica. The coating of this steel serves as general corrosion’s passivating barrier. The other coating layer allows the formation of galvanic element once the sheet is exposed to electrolyte or moisture. This exposure results in the flowing over of zinc ions and corrosion protection of exposed steel. It also helps protect the steel’s trimmed edges and scratches. 

Here’s a table showing the EN 10142 equivalent of AZ150 galvalume steel coil thickness. 

• 0.150 ± 0.11 mm
• 0.120 ± 0.10 mm
• 0.100 ± 0.09 mm
• 0.90 ± 0.08 mm
• 0.80 ± 0.08 mm
• 0.70 ± 0.08 mm
• 0.60 ± 0.06 mm
• 0.50 ± 0.06 mm

AZ150 galvalume is suitable for buildings or other facilities in extreme environments. It is extremely corrosion-resistant and weather-resistant and can reach a service life of more than 10 years.

This alloy can be used in various applications where corrosion resistance is a concern—including marine environments, chemical plants, and nuclear reactors—and is often used in industrial applications because it has a high tolerance for elevated temperatures.

The development of AZ55 Galvalume was driven by the need for an aluminum alloy that would resist corrosion in marine environments. 

What is AZ55 galvalume steel coil?

AZ55 galvalume steel coil is 55 % Aluminum-Zinc Alloy-Coated by the Hot-Dip Process. It has excellent corrosion resistance and can be used in various applications, such as the automobile industry, shipbuilding, the construction industry, and many more.

In addition to being an excellent material for exterior use, the AZ55 galvalume steel coil has many other benefits. For example, it can be used for electrical equipment manufacturing or decoration, like fences. In addition to these uses, this type of steel can also be used for various industrial applications because it has good mechanical properties and resistance to corrosion.

What does AZ55 mean?

AZ50 means that the total both sides of the aluminum-zinc alloy coating in the  Triple-Spot Test in the ASTM a972 standard are 0.55 oz/square foot.

AZ55 is a standard for zinc-coated steel sheets and coils used in various applications, including roofing and siding. The AZ55 designation refers to the thickness of the coating on the steel sheet or coil, which is between 0.375 and 1.5 millimeters (0.015 to 0.059 inches).

Will AZ55 galvalume last long?

The answer is yes. AZ55 galvalume is a high-quality aluminum alloy used for years in the construction industry. It’s easy to use, lightweight, and highly durable. This makes it an excellent choice for various applications, including roofs, gutters, car bodies, and more.

Galvalume is a type of aluminum used as a protective layer for steel, and it has been used for decades in the construction industry. Galvalume can also be used as an industrial coating or even in automobiles. Since it’s durable, you’ll get many years of use out of your AZ55 galvalume roof.