ASTM C1047-19 PDF Download

ASTM C1047-19 is a standard specification that covers accessories used with gypsum wallboard and gypsum veneer base. These accessories are designed to protect edges and corners and provide architectural features. The standard specifies that steel accessories and steel components of accessories manufactured from steel and paper combination should be made from zinc-coated cold-roll sheet steel before the application of the coating. Surface treatments such as phosphatizing may also be used to ensure compatibility and bond.

In addition, the paper components of accessories manufactured from steel and paper combination must comply with requirements for thickness, tensile strength, dimensional stability, and bond of joint tape to joint compound. These accessories should be free from any twist or camber that would prevent their use in the intended assembly. Moreover, the edges of the accessories must be free from burrs and sharp edges, ensuring safe and smooth installation. The standard also provides a figure that illustrates the types of architectural features that these accessories can provide.