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. ASTM F – Download as PDF File .pdf), Text File .txt) or read online.
|Published (Last):||19 December 2011|
|PDF File Size:||2.78 Mb|
|ePub File Size:||19.19 Mb|
|Price:||Free* [*Free Regsitration Required]|
The values stated in each system may not be exact equivalents; therefore, each system shall be used independently of the other. F defines the two different lots and their associated astm f2329 plans as follows:. Combining values from the two systems may result in non-conformance with the standard.
If certified test reports are not available, then the supplier must default to Sample Size C and conduct the tests required. ASTM F describes two different sampling plans for batch lots and astm f2329 lots. These instances can include when steel has been severely work hardened or when the galvanizing bath temperature exceeds the stress relief astm f2329 tempering temperatures of the fasteners.
The major differences between the two specifications, described below, include topics related to sampling protocol, coating thickness, astm f2329, embrittlement, and documentation.
ASTM F – Portland Bolt
Nails and rivets are astm f2329 included in this specification. Zinc Coating Thickness Requirements: ASTM does not give any warranty express or implied or make any representation that the contents of this abstract are accurate, complete or up to date. The coating thickness requirements of A Table 1 meet or exceed those of F Table 2 except for:.
Astm f2329 is the responsibility of the user of this standard to establish appropriate safety and health practices and determine the applicability of regulatory limitations prior to use.
Galvanizing fasteners in accordance with A, will usually meet or exceed the requirements of F, because F defers to A in many sections.
F defines the two different astm f2329 and their associated sampling plans as follows: Authored by Alana Hochstein.
For example, a lot size of astm f2329 under the detection process requires testing of 11 samples for coating thickness, 11 samples for visual appearance, and astm f2329 samples for adhesion. Fasteners which are subjected to severe work hardening must be stress-relieved prior to galvanizing. It also provides for minor coating repairs. The test methods for appearance astm f2329 smoothness astm f2329 F shall be conducted for every batch lot by visual inspection in accordance with methods provided in A The amount of additional documentation beyond ASTM A requirements will vary depending on a number of optional requirements the customer can specify under F To determine how many samples are required to test for conformance based on the lot size, F refers to Table 3 of F, Practice for Fastener Sampling for Specified Mechanical Properties and Performance Inspection.
Table astm f2329 of F lists average coating thickness requirements for production lots, batch lots, and individual specimens. The following tests shall be made to ensure that the zinc coating is being furnished in accordance with astm f2329 specification: The type axtm production lot process will determine which column should be referenced for the sample size of each inspection criteria, as summarized in the table below, or per the F Sampling Plan Flow Chart.
ASTM F vs. ASTM A | American Galvanizer’s Association
Astm f2329 is important to note the acceptance criterion in all cases is zero defects. This specification covers the requirements for hot-dip zinc astm f2329 applied to carbon steel and alloy steel bolts, screws, washers, nuts, and special threaded fasteners applied by the hot-dip coating process.
Compared astm f2329 the sampling plan in A, F requires fewer samples per batch lot size, astm f2329 the galvanizer is required to also conduct adhesion testing and visual inspection for appearance on these test articles as defined by Table 1.
On the other hand, if embrittlement testing is necessary under F, it is to be conducted per ASTM F a wedge positioned and tensioned under a bolt headwhich is a different method than any of the methods described within A Paragraph 9.
A summary of the numerical differences between the two specifications related to coating thickness requirements for all materials is presented in the table: Link to Active This link will always route to the current Active version of the standard.
Furthermore, there are two types of production lots: Astm f2329 Documents purchase separately The documents listed below are referenced astm f2329 the subject standard but are not provided as part of the standard. If the customer specifies, the galvanizer will be required to provide the average astm f2329 temperature the fasteners will be exposed to. Otherwise, a third party will be required to apply the lubricant at an additional cost. It is informational only and not an official part of the standard; the full text of the standard itself must be referred to for its use and application.
Adhesion testing is not typically performed when galvanizing to the requirements of A unless astm f2329 is evidence of an adhesion concern, but F requires adhesion testing stout knife test to be performed for the number of articles listed in Table 1, astm f2329 for every batch lot.
See excerpt of Table 1 below. The differences in the types of lots entail different astm f2329 plans, which specify the number of test articles for performing various test methods during inspection astm f2329 the finished product.
Coating Thickness Table 2 of F lists average coating thickness requirements for production lots, batch lots, f2392 individual specimens.
ASTM F2329 vs. ASTM A153
Quenching According to F Paragraph 5. However, if a purchaser also requires the galvanizer to astm f2329 dimensional requirements of astm f2329 upon delivery, they must provide the galvanizer with the necessary tools and inspection gauges. This method is similar to an inspection of coating thickness on multi-specimen articles galvanized per ATSM A It is important to ensure the customer specifies which type of lot is required.
This abstract is a brief summary of astm f2329 referenced standard. For long pieces anchor rods or articles greater than five astm f2329 in lengthcoating thickness measurements must be taken on each end and in the middle of the article. Historical Version s – view previous versions of standard.
f22329 It is necessary for the galvanizer to communicate the bath temperature to the customer to ensure the end user understands the effects the galvanizing temperature will have on the steel. According to Astm f2329 Paragraph 5. The batch lot inspection process is more similar to inspection astm f2329 A than inspection astm f2329 production lots, but Table 1 of F has some additional requirements to consider.
For each of these types, there are also inspection criteria for coating thickness, visual appearance, and adhesion. Because A does not require water quenching nor chemical post-treatments, communication between the customer and the galvanizer is required to determine whether the galvanizer has a quench tank and the capability astm f2329 perform chemical post-treatments, or if air-cooling will be acceptable.
The coating thickness requirements of A Table 1 meet or exceed those of F Table 2 except for: The temperatures used in the hot-dip galvanizing process typically do not appreciably alter the astm f2329 properties of steel, but there are some instances when there f23329 potential concerns.
Astm f2329 practice is to note the bath temperature when galvanizing steel to F, although only the average bath temperature is required. The acceptance number in all cases is zero defects.