ASTM F2329 PDF

Zinc Coating Thickness Requirements: ASTM A vs. F Dimension. ASTM A ASTM F Avg. Coating. Thickness of. Specimens. Tested. 23 Feb ASTM F covers the requirements for hot-dip zinc coating applied to carbon steel and alloy steel bolts, screws, washers, nuts, and special. 4 Jan 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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It is not a dip spin coating like hot dip galvanizing is. A covers galvanizing on many products including fasteners, while F is specific to threaded fasteners, nuts and washers. A and F again are more or less the same, F references back to the processes in A, but goes into more detail with respect to the specifics of threaded fasteners.

If certified test reports are not available, then the supplier must default to Sample Size C and conduct the tests required. Compared to the sampling plan in A, F requires fewer samples per batch lot size, but the galvanizer is required to also conduct adhesion testing and visual inspection for appearance on these test articles as defined by Table 1.

ASTM A does not cover threaded bolts and fasteners.

Hot-Dip Galvanizing Specifications – Portland Bolt

The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel. This specification covers the requirements for hot-dip zinc coating applied to carbon steel and alloy steel bolts, screws, washers, nuts, and special threaded fasteners applied by the hot-dip coating process. Coating Thickness Table 2 of F lists average coating thickness requirements for production 2f329, batch lots, and individual specimens.

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Could you please clarify? The coating thickness requirements of A Table 1 meet or exceed those of F Table 2 except for: Therefore, it must be clarified whether the plant has the ability to lubricate hardware after hot-dip galvanizing.

Work Item s – proposed revisions of f2392 standard.

ASTM F vs. ASTM A | American Galvanizer’s Association

Combining values from the two systems may result in non-conformance with the standard. One of our experienced sales reps will be happy to answer any of your questions. A touches on threaded fasteners, but is not fastener specific. The batch lot inspection process is more similar to inspection under A than inspection of production lots, but Table 1 of F has some additional requirements to consider.

ASTM A A covers galvanizing on many products including fasteners, while F is specific to threaded fasteners, nuts and washers.

It does not cover threaded f2239 that are centrifuged or otherwise handled to remove excess zinc.

Authored by Alana Hochstein. April 10, Authored by Bernardo A. The coating thickness requirements of A Table 1 meet or exceed those of F Table 2 except for:. The zinc used for the coating shall conform to the chemical composition required. Galvanizing fasteners in accordance with A, will usually meet or exceed the requirements of F, because F defers to A in many sections.

Hot-Dip Galvanizing Specifications

For example, a lot size of f22329 under the detection process requires testing of 11 samples for coating thickness, 11 samples for visual appearance, and 3 samples for adhesion. The standard specification that covers the requirements for hot-dip zinc coating applied to carbon steel and ff2329 steel bolts, screws, washers, nuts, and special threaded fasteners applied by the hot-dip coating process.

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F defines the two different lots and their associated sampling plans as follows: The test methods for appearance and smoothness under F shall be conducted for every batch lot by visual inspection in accordance with methods provided in A This specification is asstm to be applied to hardware items that are centrifuged or otherwise handled to remove excess zinc.

Also in which material we are coating or galavanizing.

ASTM F2329

A summary of the numerical differences between the two specifications related to coating thickness requirements for all materials is presented in the table: Leave this field empty. For long pieces anchor rods or articles greater than five feet in lengthcoating thickness measurements must be taken on each end and in the middle of the article.

According to F Paragraph 5. It is important to note the acceptance criterion in all cases is zero defects. Fasteners which are subjected to severe work hardening must be stress-relieved prior to galvanizing.