AS 1397-2001 is an Australian and New Zealand standard that specifies requirements and identification methods for continuous hot-dip metallic-coated steel sheet and strip, including zinc and zinc-alloy coatings such as aluminum and magnesium alloys.
Key Aspects and Characteristics
Full Title: AS 1397-2001 Continuous hot-dip metallic coated steel sheet and strip – Coatings of zinc and zinc alloyed with aluminium and magnesium.
Scope: This standard covers steel sheets and strips with coatings like hot-dip galvanizing (pure zinc) and zinc-aluminum alloys (e.g., Galvalume).
Material Properties:
Base Steel: Typically low-carbon steel or high-strength low-alloy (HSLA) steel.
Coating Types: Includes pure zinc coatings (galvanized steel) and zinc-aluminum alloy coatings (55% aluminum-zinc alloy).
Applications: Widely used in construction, automotive, appliances, agriculture, and industrial equipment.
Coating Classifications
AS 1397-2001 classifies hot-dip coatings based on their thickness and composition. Examples include:
Z Series: Pure zinc coatings, such as Z275 (indicating a coating mass of 275 g/m² total for both sides).
AZ Series: Aluminum-zinc alloy coatings, such as AZ150 (indicating a coating mass of 150 g/m² total for both sides).
Standard Characteristics
Corrosion Resistance: Provides excellent corrosion protection, making it suitable for outdoor and harsh environments.
Mechanical Properties: Offers various grades to meet different strength and ductility requirements.
Marking: Products are marked to indicate coating type and mass to ensure transparency for users.
Common Applications
Construction: Roofing sheets, wall panels, purlins, and structural steel elements.
Automotive: Body panels, underbody components, and structural parts.
Appliances: Exterior casings for washing machines, refrigerators, and air conditioners.
Agriculture: Barns, silos, fencing, and greenhouse frames.
AS 1397-2001 ensures that hot-dip metallic-coated steel products in the Australian and New Zealand markets meet stringent quality and performance requirements, enhancing durability, corrosion resistance, and reliability for a wide range of applications.
