G250 steel is a structural steel grade according to the Australian AS 1397 standard. Its yield strength is 250 MPa and its carbon content is 0.12. It comes in two styles sheet and coil.
G250 steel is a kind of low-carbon structural steel, which is used in metal roofs, walls, purlins, etc. It has good weldability.
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 |
