The difference between ductile iron castings and gray iron castings

Ductile iron castings and gray iron castings have a wide range of applications, and have always been the most commonly used iron castings, so how to identify whether the castings are ductile iron castings or gray iron castings? Today, I will talk to you about their differences.

There are several ways to identify ductile iron castings and gray iron castings. 

1. From the observation of the percussion port, the grains of ductile iron castings are fine and black-gray, while the grains of gray iron castings are relatively coarse and grayish-white. 

2. From the surface of processing, ductile iron castings are brighter than gray iron castings. 

3. Judging from the sound of percussion, the sound of percussion of ductile iron castings is crisp, with echo and long echo, and the second gray iron castings do not respond, and the sound is relatively muffled.