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New information and research are constantly being considered when updates are made to ASTM A; the last such update occurring in On the other hand, the A only requires that the average measurement of the thickness of the coating meet the minimum coating thickness required by Cwa 1, with the sample average having a coating less than that required in Table 1. But due to financial considerations, CSA G has not been updated since and there seem to be no plans to do so.
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ca A, on the other hand, only requires the average coating thickness measurement meet the minimum coating thickness required by Table 1, with the average of one specimen being one coating grade below that g14 in Table 1. Both specifications ask for the use of a stout knife test to determine proper adherence of the coating.
The higher purity required by G is the difference between the two specifications. Is the CSA G standard always a valid specification? The most significant difference here is with regard to the minimum coating thickness required by the A for pipes and tubes and for flats and bars.
CSA CAN/CSA-G164-M92 – Hot Dip Galvanizing of Irregularly Shaped Articles
The higher purity required by G creates the difference in the two specifications. New information and research are constantly taken into account when updates are made to ASTM A; the last update was in Few requirements are given by G concerning the appearance of the zinc coating. The standard requires that the coating be free of imperfections such as bubbles, rough or uncoated areas, acid, black spots, or slag particles adhering to the coating It is considered the standard of the hot-dip galvanizing industry in North Csx.
Lets examine some important differences between the two specifications, and then summarize with a comparison table. Both standards also cite ASTM B6 as a standard to which the zinc used in the galvanizing bath must conform.
Also, A has no requirements as to the minimum coating thickness on threaded fasteners and items, but refers to ASTM A for these requirements. For, example, each specification uses a table to describe minimum coating thickness standards on galvanized steel, but the minimum requirements and materials listed are quite different. Both standards also cite that ASTM B6 is a standard that specifies xsa the zinc used in the galvanizing bath must be compliant. The procedure includes the option to choose the csx of samples depending on the number of parts in the lot and the length and size of the parts.
January 29, Authored by Daniel Barlow. Some slightly different language exists between the two regarding piping and continuous galvanizing, but when read carefully, the g14 information is being stated in the scope of each specification.
Some differences exist between the two with regard to piping and caa galvanizing, but after examination, the same information is indicated within each specification.
Cssa creates less confusion during the galvanizing process and a more complete specification. However, there are some competing specifications that are worthy of consideration when an end user requests that the galvanizer use them.
The first major difference between the two specifications is where Article 3. But G has its own test procedures for the weakening of the base layer, A refers to the most complete guide of the ASTM A standard, which gives the details of a bending test. Both specifications require the use of a knife test to determine proper coating adherence.
This material provides general information only and is not intended as a substitute for competent professional examination and verification as to suitability and applicability. ASTM A has a more realistic expectation that the coating be free of uncoated areas, bubbles, flux deposits, and matte. This leads to less confusion during the galvanizing process and creates a complete specification. Total average equal to the requirement for the minimum coating thickness with the thicknesses of all samples greater than a coating grade less than in Table 1.
Few conditions are given by G regarding the appearance of the zinc coating. The practice behind each method varies from one specification to the other, but the most notable differences are the feeler gauge, magnetic and electronic measurements. It is considered the standard of the hot-dip galvanizing industry in North America.
Recent reports have shown that much thicker coatings than these minimum requirements are not feasible on these materials. ASTM A also holds a few more requirements regarding the finish of the coating. ASTM A is listed as the standard for repair for each specification. The sampling procedure set up in G to test the coating thickness has very general guidelines.
Differences Between ASTM A and… | American Galvanizer’s Association
It is important to be aware of these differences in the case where a manufacturer or prescriber requests information on CSA Xsa The two specifications also contain a minor difference regarding the renovation of areas left uncoated during the galvanizing process.
Both specifications also contain a slight difference with respect to the repair of uncoated areas during the galvanizing process. However, the information presented here can adequately describe ccsa of the key differences between the two. Both tables are shown below to compare the minimum coating thicknesses specified by each one. The scope of these two specifications, and therefore their intended purpose, are nearly identical. The CSA G classifications are more general and include; cast, rolled, stretched, pressed and forged steel; screws, bolts, nuts, rivets, nails and similar fasteners.
Each standard lists the same tests used to determine the coating thickness on galvanized steel; electronic or magnetic gauge, weigh galvanize weigh, weigh strip weigh or microscopy methods. While this standard is similar to ASTM A in scope and purpose, there are many differences between the two. Is CSA G still a valid specification?