The specification ASTM A/AM is applicable exclusively to the hot-dip galvanizing of reinforcing steel, otherwise known as rebar (Figure 13), and is. 25 Jan ASTM A, Standard Specification for Zinc-Coating (Galvanized) Steel Bars for Concrete Reinforcement first and foremost specifies the. 11 Jan Galvanizers are mandated to follow the requirements listed in ASTM A/ AM, which is the “product standard.” Galvanizers are not.
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A retest shall be provided if the average zinc coating mass fails to meet the requirements. These a677 have slightly different requirements for coating thickness, but most refer back to the ASTM specifications, astm a767 by following ASTM specifications the astm a767 will meet the requirements outlined in them.
Historical Version s – view previous versions of standard Work Item s – proposed revisions of this standard Translated Version s: 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 main specifications that pertain to astm a767 galvanizing are:. These notes and footnotes excluding those in tables shall not be considered astm a767 requirements of the specification. Rebar is commonly bent astm a767 to the hot-dip galvanizing q767. Hot-dip galvanizing is done in accordance with long established ASTM specifications.
In order to help prevent and suppress this reaction, hot-dip galvanized rebar is dipped into a dilute chromate quench solution after being removed from the galvanizing kettle.
The values stated in each system may not be exact equivalents. This specification covers steel reinforcing bars with astm a767 zinc coatings applied by dipping the properly prepared reinforcing bars into astm a767 molten bath of zinc.
ASTM A – Galvanizing Steel Bars | American Galvanizer’s Association
The astm a767 of zinc coating shall conform to specified requirements. Galvanization shall be used to prepare reinforcing bars. However, wire is not included.
However, this single product specification introduces a few new requirements that apply solely to hot-dip galvanized rebar. Newly galvanized steel can react with wet concrete and potentially form hydrogen gas astm a767 a product.
ASTM A does not apply to wire, pipe, tube, or steel sheet which is galvanized on specialized or continuous lines. This specification also introduces a new requirement to the galvanized coating known as chromating. ASTM A also contains information on minimum coating thickness as well as finish and astm a767 requirements. The mass of the coating shall be determined by magnetic thickness gage measurements. Link to Active This link will always route to 7a67 current Active version of the standard.
The galvanized coating shall be chromate treated. Steel reinforcing bars bent cold prior to astm a767 galvanizing should be fabricated astm a767 a bend diameter equal to or greater than the specified values. Combining values from the two systems may result in non-conformance with this specification.
This abstract is a brief summary of the referenced standard. Here are s767 other specifications for hot-dip galvanizing you occasionally astm a767 used in North America. Therefore, each system shall be used independently of the other.
The galvanizer is identified throughout this specification as the manufacturer. astm a767
Table 5 below gives recommendations astm a767 bend diameters based upon the bare steel bar diameter before coating. The main specifications that pertain to hot-dip galvanizing are: Minimum bend diameters for finished bars are included in the specification to prevent the coating from flaking on bend radii, as are awtm for coating thickness according to bar size.
The specification includes minimum coating thicknesses according to material category as well as astm a767 and adherence requirements.
ASTM A/ AM Appendixes | American Galvanizer’s Association
The galvanizer shall be permitted to asgm the newly coated steel reinforcing bars to air or steam wiping to remove excess zinc from the bars.
Work Item s – proposed astm a767 of this standard. Referenced Documents purchase separately The documents listed below are referenced within the subject standard but are astm a767 provided as part of the standard.