Standard specifications for hot-dip galvanized photovoltaic brackets

What are the specifications for hot-dip galvanizing?

The main specifications that pertain to hot-dip galvanizing are: ASTM A123 Standard Specification for Zinc (Hot-Dip Galvanized) Coatings on Iron and Steel Products covers the requirements for galvanizing by the hot-dip process on iron and steel products made from rolled, pressed, and forged shapes, castings, plates, bars, and strips.

What materials are required for hot-dip galvanized steel?

Materials: For steel to be hot-dip galvanized, provide steel chemically suitable for metal coatings complying with the following requirements: carbon below 0.25%, phosphorous below 0.04%, manganese below 1.3%, and silicon below 0.04%.

What is a galvanizing specification?

This specification has been prepared by the galvanizing industry through its technical working group, in consultation with industry and a number of consulting engineering groups. It is intended to be used in conjunction with Australian/New Zealand Standard 4680 and is designed for simple insertion into specifiers’ overall materials specifications.

How do you test a hot dip galvanized coating?

If specified by the purchaser, the thickness of the hot dip galvanized coating shall be tested by the galvanizer or purchaser at the galvanizer’s works using an appropriate magnetic measuring device in accordance with AS/NZS 4680, Appendix G. In the event of any dispute, an independent test shall be carried out.

What are the requirements for galvanizing articles?

Galvanizing parameters such as galvanizing temperature, time of immersion, and withdrawal speed shall be employed to suit the requirements of the article. The composition of the zinc in the galvanizing bath shall comply with AS/NZS 4680. 1 Thickness Table 1. Requirements for coating thickness and mass for articles that are not centrifuged Table 2.

Which material is suitable for galvanizing?

Material to be chemically suitable for galvanizing. Steels containing carbon below 0.25%, phosphorus below 0.04% and manganese below 1.3%, either individually or in combination, and providing the silicon content is 0.04% or less, will normally develop a typical coating when conventional galvanizing techniques are applied.