Galvanized Steel Sheet In Coil ASTM A653M
ASTM A653M is a specification standard for hot dip galvanized steel coil, mainly used for thin sheets coated with hot-dip galvanizing.
When it comes to high-quality steel products, hot dip Gl coil ASTM A653M is a standout choice for industries that demand exceptional performance and longevity.
ASTM A653M is a standard developed by the American Society for Testing and Materials (ASTM) for zinc-coated sheets in coils and cut-to-length produced by hot-dip galvanizing.
ASTM A653M is a specification that outlines the requirements for steel sheets coated with zinc (galvanized) through the hot-dip process. This standard ensures that the steel coils provide consistent mechanical properties and coating quality, making them suitable for demanding environments and applications.
| Types of galvanized layers | Hot-dip pure zinc coating (Z) |
|---|---|
| Thickness of the galvanized layer | G30, G90, G235, etc. |
| Chemical composition | C ≤ 0.10%, Mn ≤ 0.60%, P ≤ 0.035%, S ≤ 0.035%, etc. |
The process of hot dip Gl steel coil is not complicated and can be divided into three parts: pre-treatment, hot-dip galvanizing and post-treatment. The main process flow includes: degreasing (if necessary) → pickling → reduction → water washing → plating aid → drying → hot-dip galvanizing → water cooling → passivation → inspection and packaging → warehousing.
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Buying Technology Guide
1. Coating selection
Indoor dry environment: Z60-Z120
Industrial atmosphere environment: Z180-Z275
Marine climate environment: Z350+
2. Processing performance matching
| Processing method | Recommended brand | Notes |
|---|---|---|
| Deep stamping | SS Grade33 | Recommended r value ≥1.8 |
| Laser cutting | SS Grade40 | Nitrogen assisted anti-oxidation |
| Bending | CS Type B | Minimum bending radius = 2t |
