CSA G164 PDF

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ASTM A has a more realistic expectation that the coating be free of uncoated areas, bubbles, flux deposits, and matte. The higher purity required by G is the difference between the two specifications. Some differences exist between the two with regard to piping and continuous galvanizing, but after examination, the same information is indicated within each specification. The percentage by weight and the percentage by mass differ only in verbiage and describe the same amount.

Table 1 of ASTM A has requirements for structural forms, strips and bars, plates, pipes and tubes, wires and rebar. Few requirements are given by G concerning sca appearance of the zinc coating. Both tables are shown below to compare the minimum coating thicknesses specified by each.

However, G gives its own procedures for testing for embrittlement of the base coating while A references a complete gg164 of ASTM A which details a bend test. A, on the other hand, only requires the average coating v164 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. The practice behind each one of these methods varies from one specification to the next, but the most notable differences are that of the magnetic and electronic thickness gauge measurements.

The procedure includes the option to choose the number of samples depending on the number of parts in the lot and the length and size of the parts.

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. Recent information has shown coatings much thicker than these minimum requirements are not attainable on these materials. The two specifications also contain a minor difference regarding the renovation of areas left uncoated during the galvanizing process. Cssa sampling procedure laid out in G for testing the coating thickness has some very general and relaxed guidelines.

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CSA CAN/CSA-G164-M92 – Hot Dip Galvanizing of Irregularly Shaped Articles

The CSA G classifications are more general and include; cast, ccsa, stretched, pressed and forged steel; screws, bolts, nuts, rivets, nails and similar fasteners.

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. But due to financial considerations, CSA G has not been updated since and there seem to be no plans to do so. Despite this, the G includes these materials with all other materials and requires inaccessible thicknesses for flats, bars, pipes, and tubes.

ASTM A also holds a few more requirements regarding the finish of the coating. The framework of these two specifications, and therefore their goal, is almost identical. G16, there are xsa competing specifications that get attention when an end user asks a galvanizer to use them. However, there are some competing specifications that are worthy of consideration when an end user requests that the galvanizer use them.

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However, due to financial considerations, CSA G has not been updated since and there appears to be no intention to do so. Both tables are shown below to compare the minimum coating thicknesses specified by each one. Both specifications also require that the exposed area cover less than 0. For example, each specification xsa a table to describe the standards for minimum coating thickness of galvanized steel, but the minimum requirements and the materials listed are very different.

ASTM A g146 declares, in addition to the 0. The sampling procedure set up in G to test the coating thickness has very general guidelines. ASTM A is listed as the standard for repair for each specification. Anyone making use of this information assumes all liability arising from such use.

However, the information presented here can adequately describe some of the key differences between the two. 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.

The scope of these two specifications, and therefore their intended purpose, are nearly identical. This standard has lost its relevance in the market and is rarely used.

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Most galvanizers located in North America use this specification as the standard for coating thickness, appearance, finish and adherence. Recent reports have shown that much thicker coatings than these minimum requirements are not feasible on these materials. The first major difference between the two specifications is where Article 3. Each specification standardizes the coating thicknessfinish, appearance, and adherence of a hot-dip galvanized coating.

Both specifications css the use of a knife test to determine proper coating adherence. The material provided herein has been developed to provide accurate and authoritative information about after-fabrication hot-dip galvanized steel.

Both standards also cite that ASTM B6 is a standard that specifies that the zinc used in the galvanizing bath must be compliant. Also, A does not give requirements for the minimum coating thickness on fasteners and threaded articles but references ASTM A for these requirements. The information provided herein is not intended as a representation or warranty on the part of the AGA.

Lets examine some important differences between the two specifications, and then summarize with a comparison table. Both specifications dsa require the bare spot to be less than 0. Both specifications require that the exposed area be less than an inch in its narrowest dimension.

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ASTM A is listed as the standard for renovation by each 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 f164.

The main difference here is the refusal to accept the presence of matte particles adhering to the coating, according to G New information and research are constantly taken into account when updates are made to ASTM A; the last update was in Again, these two specifications are similar, but have major differences; particularly with regard to the listed coating properties.

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