Popular grade- ASTM A653 SS Grade 80 / G550 High Strength Galvanized Steel Coil
G550 galvanized steel is hot dipped zinc coated structural steel with a spangled surface with the guaranteed minimum yield strength of 550MPa
It is typically used in roll-formed sections for structural applications.
We, here at GNEE Steel adhere to strict standards making sure that all of our produced and supplied galvanized steel coils comply with the industrial grade-ASTM A653 SS Grade 80 / G550 galvanized coils which are then used in the construction of light gauge steel(LGS).
G550 Requirements for Chemical Composition
| Steel grade designation AS 1397 |
Chemical composition (cast analysis), % max. | |||
|---|---|---|---|---|
| Carbon | Manganese | Phosphorus | Sulfur | |
| G550 | 0.2 | 1.2 | 0.04 | 0.03 |
G550 Mechanical Property Requirements
| Steel grade designation |
Longitudinal tensile test | Transverse bend test | ||||
|---|---|---|---|---|---|---|
| Min. yield strength MPa |
min. tensile strength MPa |
Min.elongation,% | Angle of bend degrees | Diameter of mandrel in terms of test piece thickness (t) | ||
| Lo = 50 mm | Lo = 80 mm | |||||
| G550 | 550 | 550 | 2 | 2 | - | - |
G550 Coating Adhesion (180° bend test) requirements
| Steel grade designation | Diameter of mandrel in terms of thickness of product (t) | |||||||
|---|---|---|---|---|---|---|---|---|
| Coating class | ||||||||
| "Z", "ZA", "ZF" and "ZM" | "AZ" and "AM" | |||||||
| Z100, ZA90 ZF80 ZF100 |
Z200, ZA135, ZA180, ZM90, ZM120, ZM150, ZM180 |
Z275, ZA225, ZA275, ZM220, ZM275 |
Z350, ZA350, ZM350 |
Z450, ZA450, ZM450 |
Z600 | AZ150, AM100, AM125, AM150 |
AZ200, AM175, AM200 AM225 |
|
| G550 | t | 2t | 2t | 2t | 2t | 3t | 2t | 2t |
G550 Steel equivalent
| Standard | Grade |
| EN 10346 | S550GD |
| ASTM A653 | SS550 |
| JIS G 3302 | SGC550 |
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