ASTM A792 is an American material specification. This type of steel sheet is produced by immersing a thin steel sheet into a molten zinc bath that adheres a layer of zinc to its surface, mainly by a continuous galvanising process.

Hot-dip galvanized steel coil Astm A792 is widely used in various applications where corrosion protection and corrosion resistance are required, such as construction, automotive, home appliances, container manufacturing and other fields. Its good adhesion of paint and weldability make it widely used in several industries.

Hot-dipped galvanized steel coil Astm A792 is a hot-dip galvanized steel coil produced in accordance with ASTM A792 standard. ‌

ASTM A792 is a standard developed by the American Society for Testing and Materials (ASTM).
 

• Composition and properties

The ASTM A792 standard divides coatings into six grades, from high to low, namely AZ150, AZ140, AZ125, AZ120, AZ110 and AZ100.

The quality grade of the coating depends on its thickness, solvent wetting test and electrical contact angle test.

In addition, the standard also stipulates the mechanical properties of the coated steel sheet, including tensile strength, yield strength, elongation and bending performance, etc. These requirements depend on the quality grade of the coating.

In terms of specimen sampling and testing, ASTM A792 describes the sampling method and specifies the test methods for the chemical composition and mechanical properties of coated steel sheets. These test methods generally include chemical analysis, optical microscopy, electron microscopy, tensile test, bending test, etc.