G250 steel is regarded as the most common grade available. Like G350 steel, it is considered to be a 'mild' type of steel; one with less than a 0.2 percent carbon level and a mild steel yield strength. It also comes available in two different forms: pattern plate form and coil form. Because of the varying methods of production, both G250 steel types can have different properties and perform in different ways. Therefore they are rarely used interchangeably and are best used for specific applications.
Grade 250 structural steel plate features excellent formability and excellent weldability, and is supplied by GNEE Steel Centre for a wide range of applications including general fabrication, construction of high-rise buildings, construction of bridges and the fabrication of storage tanks.
Typical Uses
General fabrication
Structural members
High-rise buildings
Bridges
Storage tanks
G250 Requirements for Chemical Composition
| Steel grade designation AS 1397 |
Chemical composition (cast analysis), % max. | |||
|---|---|---|---|---|
| Carbon | Manganese | Phosphorus | Sulfur | |
| G250 | 0.12 | 0.5 | 0.04 | 0.035 |
G250 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 | |||||
| G250 | 250 | 320 | 25 | 22 | 180 | 0 |
G250 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 |
|
| G250 | 0 | 0 | 0 | 0 | t | 2t | 0 | t |
