ASTM A153 and ASTM A123 are two different standards developed by the American Society for Testing and Materials (ASTM International), mainly related to the specification of galvanized steel. The following are their main similarities and differences:
Similarities:
Target area: Both involve hot-dip galvanizing, which involves immersing steel products in molten zinc to form a protective coating of zinc.
Differences:
Applicable scope:
ASTM A153: Mainly suitable for hot-dip galvanizing of small parts, bolts, nuts, screws, etc. used in various products.
ASTM A123: Mainly applicable to larger or more important structures, such as pipes, fittings, guardrails, steel structures, etc., with stricter requirements for their zinc layer.
Coating thickness:
ASTM A153: The generally required coating is relatively thin and is usually used for parts with low requirements for corrosion resistance.
ASTM A123: The requirements for coatings are usually stricter, requiring a larger coating thickness to provide longer corrosion resistance life.
Detection method:
ASTM A153: The testing method used is relatively simple, mainly involving visual inspection and coating thickness measurement.
ASTM A123: More stringent, typically including chemical analysis, visual inspection, coating thickness measurement, etc.
Application field:
ASTM A153: Suitable for some small components, bolts, nuts, etc.
ASTM A123: Suitable for larger and more important structures, such as building structures, bridges, guardrails, etc.
Overall, the choice of which standard to use depends on the specific application requirements. If larger structures are involved or require higher corrosion resistance, hot-dip galvanizing in accordance with ASTM A123 standard is usually chosen.
Post time: Nov-23-2023
