Description
ASTMA653/A653M G40 1.0mm*1250mm Galvanized Steel Sheet Zero Spangle
Hot-Dip Galvanizing: The standard covers steel sheets that are
coated with zinc or zinc-iron alloy through the hot-dip process.
Hot-dip galvanizing involves immersing the steel sheet in a bath of
molten zinc or zinc-iron alloy, resulting in a protective coating
that provides corrosion resistance.
Coating Types: ASTM A653/A653M includes two coating types:
zinc-coated (galvanized) and zinc-iron alloy-coated (galvannealed).
Galvanized coatings are pure zinc, while galvannealed coatings are
a combination of zinc and iron. Galvannealed coatings offer
improved paint adhesion and weldability compared to galvanized
coatings.
Mechanical Properties: The standard specifies the minimum
mechanical properties of the steel sheets, such as tensile
strength, yield strength, and elongation. These properties ensure
the structural integrity and performance of the galvanized or
galvannealed steel.
Parameters
| Thickness | 0.4mm-2.0mm |
| Width | 600mm-1250mm |
| Standard | ASTM, AISI, DIN, JIS |
| Grade | SGCC, DX51D, DX52D, DC51D, DC52D |
| Zinc Coating | 40g/m²-275g/m² |
| Spangle | Big spangle, Regular spangle, Mini spangle, Zero spangle |
| Tolerance | Thickness: ±0.01mm, Width: ±2mm |
| Place of Orgin | Shanxi, China |
| Surface Treatment | Passivation, Chromate Conversion, Oiled And Anti-figer |
| Package | Standard export packaging |
Application
1. ASTM A653/A653M steel sheets are used in the production of
electrical enclosures, cabinets, and control panels. The galvanized
coatings offer corrosion resistance, protecting the electrical
components from environmental factors.
2. Galvanized or galvannealed steel sheets find use in various
general fabrication applications, such as ductwork, pipes, tubes,
supports, and brackets. The coatings enhance the longevity and
durability of these fabricated components.
3. ASTM A653/A653M steel sheets are used in the production of
electrical enclosures, cabinets, and control panels. The galvanized
coatings offer corrosion resistance, protecting the electrical
components from environmental factors.
4. Galvanized or galvannealed steel sheets are used in the
transportation industry for applications such as trailers, truck
bodies, railcars, and shipping containers. The coatings help
protect the steel from road salts, moisture, and other corrosive
elements. Etc.
Main Features
1. Coating Types: ASTM A653/A653M covers two types of coatings:
zinc-coated (galvanized) and zinc-iron alloy-coated (galvannealed).
Galvanized coatings consist of pure zinc, while galvannealed
coatings are a combination of zinc and iron. These coatings provide
excellent corrosion resistance.
2. Coating Weight: ASTM A653/A653M provides different coating
designations to represent the coating weight of the galvanized or
galvannealed steel. The coating weight is expressed in ounces per
square foot (oz/ft²) or grams per square meter (g/m²). Common
coating designations include G30, G40, G60, and G90, indicating
different coating weights.
3. Formability: ASTM A653/A653M addresses the formability of the
galvanized or galvannealed steel sheets. The coatings should allow
for bending, forming, and other fabrication processes without
cracking or flaking.
4. Corrosion Resistance: The galvanized or galvannealed coatings
applied by the hot-dip process provide excellent corrosion
resistance to the steel sheets. They protect the underlying steel
substrate from rust and corrosion, making them suitable for various
environments and applications.
FAQ
Q1: What are the differences between galvanized and galvannealed
coatings?
A1: Galvanized coatings consist of pure zinc, while galvannealed
coatings are a combination of zinc and iron. Galvannealed coatings
offer improved paint adhesion and weldability compared to
galvanized coatings.
Q2: What is the significance of coating weight in ASTM A653/A653M?
A2: The coating weight represents the amount of zinc or zinc-iron
alloy applied to the steel sheet during the hot-dip process.
Different coating designations, such as G30, G40, G60, and G90,
indicate different coating weights in ounces per square foot
(oz/ft²) or grams per square meter (g/m²).
Q3: What are the mechanical properties specified in ASTM
A653/A653M?
A3: ASTM A653/A653M specifies minimum mechanical properties such as
tensile strength, yield strength, and elongation. These properties
ensure the structural integrity and performance of the galvanized
or galvannealed steel sheets.
