Ductile Cast Iron | Cast Steel | |||||
Properties | Quality | Equivalent standards | Quality | Equivalent Standards | ||
GB/T1348-2009 QT450-10 |
ISO 450-10 |
ASTM 65-45-12 |
GB/T11352 ZG230-450 | ISO 23-450W |
ASTM 65-35 |
|
Yield Strength | ≥310(Mpa) | ≥310(Mpa) | ≥31(Mpa) | ≥230(Mpa) | ≥230(Mpa) | ≥240(Mpa) |
Tensile Strength | ≥450(Mpa) | ≥450(Mpa) | ≥448(Mpa) | ≥450(Mpa) | ≥450(Mpa) | ≥450(Mpa) |
Elongation | ≥10(%) | ≥10(%) | ≥12(%) | ≥22(%) | ≥22(%) | ≥24(%) |
Mooring points loads for general cargo vessels and bulk carries | |
Ship displacement (ton) | Mooring point load (ton) |
20,000 up to and including 50,000 | 80 |
Above 50,000 up to and including 100,000 | 100 |
Above 100,000 up to and including 200,000 | 150 |
Above 200,000 | 200 |