Zinc Coating Thickness Requirements: ASTM A vs. F Dimension. ASTM A ASTM F Avg. Coating. Thickness of. Specimens. Tested. ASTM F covers the requirements for hot-dip zinc coating applied to carbon steel and alloy steel bolts, screws, washers, nuts, and special. ASTM A does not cover threaded bolts and fasteners. ASTM A and F are the ASTM specifications that cover the requirements for.
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If your requirement is for hot dip galvanizing, electroplating would not be sufficient. Any insights would be deeply appreciated. Phil- The hot dip galvanizing process is more or less the same within all of those standards, the difference is how they are handled.
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ASTM F – Portland Bolt
A summary of the numerical differences between the two specifications related to coating thickness requirements for all materials is presented in the table: NOTE 2—Hot-dip washers tend to bond to each other. F defines the two different lots and their associated sampling plans as follows:. Combining values from the two systems may result in f229 with the standard. All the ASTM fastener standards refer to F for hot dip galvanizing, so asfm would be the most appropriate standard to reference.
Hot-Dip Galvanizing Specifications – Portland Bolt
The dull appearance shall not be cause for rejection. Portland Bolt performs hot dip galvanizing of threaded fasteners within our 85, square foot manufacturing facility.
The purchaser shall ensure that the effect of the heat generated by the galvanizing process is compatible with the fastener regarding the?
Work Item s – proposed revisions of this standard. See excerpt of Table 1 below. The zinc used for the coating shall conform to the chemical composition required.
Dane- Thanks for response.
Current edition approved Feb. Coating and Dimensional Requirements 8. Sal- Are you asking which galvanizing standard you should be using?
For high strength fasteners having a speci? For long pieces anchor rods or articles greater than five feet in lengthcoating thickness measurements must be taken on each end and g2329 the middle of the article. Average Thickness of Individual Specimen 0. The acceptance number in all cases is zero defects.
F — 05 Standard Speci?
The average of those selected measurements is the average coating thickness. Spinning removes excess zinc from the fastener so that the nut will mate with the bolt. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to g2329 its use and application.
Leave this field empty. Nails and rivets are not included in F This standard is subject to revision at any time by the responsible technical committee and must be reviewed every? Note—Based upon mathematical calculations, 1.
Suitable acceptance criteria shall be agreed between the purchaser and the galvanizer before placing the order.
Therefore, it must be clarified whether the plant has the ability to lubricate hardware after hot-dip galvanizing. Chemical Composition of Zinc 6. Many thanks Sal from Dubai.