Its physical property is similar to that of spheroidal graphite iron tubes, but some aspects such as elongation percentage are inferior to the spheroidal graphite iron tubes.
物理性质与球墨铸铁管类似，但在延伸率等较多方面均劣于球墨铸铁管，但灰口铸铁管价格适中。
2
Mathematical model of the microstructure as well as the mechanical properties of spheroidal graphite iron casting was researched on the basis of solidification and thermodynamics theories.
根据结晶及相变动力学理论，建立了预测球墨铸铁件铸态组织及机械性能的数学模型。
3
The torsional strength of the notch of spheroidal graphite (SG) cast iron by continuous casting was tested.