Z600 galvanised steel
The Z in the name stands for zinc, but what about the 600? That number actually indicates the number of grams per square metre. A higher number, therefore, indicates a thicker coating. In fact, heritage gal roofs are also available in Z275 and Z450. So Z600 is the thickest available option, coming in at 600 grams of zinc coating per square metre.
GNEE Galvanised steel Z600 is hot-dipped zinc-coated steel with a spangled surface that complies with AS/NZS 1397. Minimum yield strength is G550 (550 MPa) or G300 (300 MPa), depending on the product. Minimum coating mass is Z600 (600g/m2). The base metal thickness is 0.42mm or 0.60mm, depending on the product.
GNEE STEEL hot selling zinc coated steel thickness
| Coating designation | Minimum total coating mass, both surfaces (g/m2) * | Guidance value for coating thickness per surface, typically (μm) |
| Z100 | 100 | 7 |
| Z140 | 140 | 10 |
| Z180 | 180 | 13 |
| Z200 | 200 | 14 |
| Z225 | 225 | 16 |
| Z275 | 275 | 20 |
| Z350 | 350 | 25 |
| Z450 | 450 | 32 |
| Z600 | 600 | 42 |
GNEE's Z600 galvanised steel provides an ideal means of meeting the requirements for steel protection laid out in the latest edition of the National House Building Council's (NHBC) moisture control standards for light steel framing in new residential buildings, including houses, apartments, student accommodation and care homes.Contact us to learn more!
