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It cea lost relevancy in the market and is seldom used. Both standards also cite that ASTM B6 is a standard that specifies that the zinc used in the galvanizing bath must be compliant.

This standard has lost its relevance in the market and is rarely used. ASTM A also declares, in addition to the 0. The scope of these two specifications, and therefore their intended purpose, are nearly identical. Anyone making use g146 this information assumes all liability arising from such use.

Is CSA G still a valid specification? The material provided herein has been developed to provide accurate cssa authoritative information about after-fabrication hot-dip galvanized steel. 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 required in Table 1.

New information and research are constantly being considered when updates are made to ASTM A; h164 last such update occurring in ASTM A is listed as the standard for renovation by each specification. Perhaps the most obvious and important difference between these standards is how relevant each one is in todays market.

Table 1 of ASTM A has requirements for structural shapes, strip and bar, plate, pipe and tubing, wire, and reinforcing bar. The first major difference between the two specifications f164 when section 3.


Each specification y164 the coating thickness, finish, appearance and adherence of a hot-dip galvanized coating uniform. 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.

Differences Between ASTM A and… | American Galvanizer’s Association

ASTM A has a more realistic expectation that the coating be free of uncoated areas, bubbles, flux deposits, and matte. New information and research are constantly taken into account when updates are made to ASTM A; the xsa update was in While this standard is similar to ASTM A in scope and purpose, there are many differences between the two.

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. However, G gives its own procedures for testing for embrittlement of the base coating while A references a complete guide of ASTM A which details a bend test. It is important to be aware of these differences in the case where a manufacturer or prescriber requests information on CSA G Few conditions are given by G regarding the appearance of the zinc coating.

Both specifications also contain a slight difference with respect to the repair of uncoated areas during the galvanizing process. The information provided herein is not intended as a representation or warranty on the part of the AGA. Recent information has shown coatings cas thicker than ca minimum requirements are not attainable on these materials. 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.

Table 1 of ASTM A has requirements for structural forms, strips and bars, plates, pipes and tubes, wires and rebar.


Standards Council of Canada

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. The main difference here is the refusal to accept the presence of matte particles adhering to the coating, according to G However, there are some competing specifications that get attention when an end user asks a galvanizer to use them.

ASTM A also holds a few more requirements regarding the finish of the coating. Cea A is listed as the standard for repair for each specification. Cas, A does not give requirements for the minimum coating thickness on fasteners and threaded articles but references ASTM A for these requirements. January 29, Authored by Daniel Barlow. 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 Both tables are shown below to compare the minimum coating thicknesses specified by each one.

Again, these two specifications are similar, but have some very important differences; especially in regards to the specified coating properties. The two specifications also contain a minor difference regarding caa renovation of areas left uncoated during the galvanizing process. Most galvanizers located in North America use this specification as the standard for coating thickness, appearance, finish and adherence. This leads to less confusion during the galvanizing process and creates a complete specification.

Despite this, the G includes these materials with all other materials and requires inaccessible thicknesses for flats, bars, pipes, and tubes. Both tables are shown below to compare the minimum coating thicknesses specified by each.