球墨铸铁的英文常见到SG Iron和Ductile Iron 的区别？

区别是：
SG Iron指的是球状石墨铸铁。
Ductile Iron指的是延性铁，球墨铸件。

例句：
SG Iron
1、Strain Fatigue Properties of Austenite-Bainite SG Iron
奥贝球铁应变疲劳特性的研究
2、At the same time, research has been done on the prediction of shrinkage cavity andporosity of SG iron based on the micro-modeling.
同时，从微观模拟的角度研究了球铁件缩孔缩松预测。
3、Based on experiments, the mathematical models of the microstructure formation ofSG iron from solidification down to room temperature were established according tothe theories of solidification kinetics, among which the diffusion-interface-controlledgrowth model of graphite spherulite was first proposed.

在实验基础上，根据结晶动力学理论，建立了球铁凝固过程各阶段微观组织形成的数学模型，其中首次提出了石墨球生长的扩散-界面控制模型。

Ductile Iron
1、Cast Iron bodies and Ductile Iron bonnets are standard.
铸铁阀体和球墨铸铁阀帽是标准配置。
2、The study was carried out to investigate the effect of alloying elements on wearresistance of heat-resistant ductile iron.

研究了合金元素对耐热球墨铸铁耐磨性能的影响。
3、This has introduced the casting process of thick section ductile iron mould with highstrength.

介绍了高强度厚大断面球墨铸铁模具的生产工艺。

都是一样的意思Spheroidal Graphite Cast Iron是SG Iron的简写，和ductile iron的意思一样。

Spheroidal Graphite Cast Iron 当然精确一些，但是平时大家都叫Ductile iron pipe.就是标准ISO2531也叫Ductile iron pipe, 你这么叫肯定没错。就像刹车，你总叫刹车，不会叫它行车制动器吧。

Spheroidal Graphite Cast Iron是SG Iron的简写，ductile iron的意思一样，都是球铁的意思