ASTM D Pracfice for Preparafion of Zinc. (Hot-Dip Galvanized) Coated Iron and Steel. Product and Hardware Surfaces for Painfing. The Thurston Avenue. This standard is issued under the fixed designation D ; the number 1 This practice is under the jurisdiction of ASTM Committee D01 on Paint and. Related. Jan 1, Buy ASTM D PRACTICE FOR PREPARATION OF ZINC (HOT-DIP GALVANIZED) COATED IRON AND STEEL PRODUCT AND.
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A similar DVD and guidebook for preparing galvanized coatings prior to paint application is also available.
This practice does not apply to sheet galvanized steel products nor to the coil coating or continuous roller coating processes. July r6386, Authored by Bernardo A. The values given in parentheses are for information only. Historical Version s – view previous versions of standard. The information provided herein is not intended as a representation or warranty on the part of the AGA.
Difference Between ASTM D and… | American Galvanizer’s Association
The second notable difference between the two specifications is Astj gives guidance for thermal pretreatment or baking of the galvanized steel prior to powder coating, whereas D does not. Outgassing occurs when moisture trapped in the outer layer of the coating evaporates as the galvanized steel is heated when the powder coating is baked on.
The result of outgassing is pinholing or blistering in the powder coating. Galvanized surfaces may have been treated with protective coatings to prevent the occurrence of wet storage stain. This practice covers surface awtm on iron and steel products and hardware that have not been painted previously.
D does not allow for these types of preparation of the galvanized coating prior to application of powder coating. Referenced Documents purchase separately The documents listed asym are referenced within the subject standard but are not provided as part of the standard.
Difference Between ASTM D6386 and ASTM D7803
D gives guidance for oven temperatures for preheating. Anyone making use of this information assumes all liability arising from such use. The first notable difference is D allows for the application of wash primers i.
Preparing surfaces of new and partially weathered galvanized steel for powder coating is addressed in Practice D Thermal pretreatment of galvanized steel is necessary prior to powder coating to prevent outgassing of the galvanized coating during the baking step in the powder coating curing process. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel.
Sheet and coil surface preparation can be done in accordance with Practice D This material provides general information only and is not intended as a substitute for competent professional examination and verification as to suitability and applicability. Link to Active This link will always route to the current Active version of the standard. It is the responsibility of the user of this standard to establish appropriate safety and health practices and to determine the application qstm regulatory limitations prior f6386 use.