Charpy Impact strength is often used as an indicator in determining materials for low temperature applications, but with ductile iron, that does not tell the whole story. Consideration should also be given to fracture toughness and to the ability of the bar producer to control chemistry.
Dura-Bar's R&D group can measure and compare wear rates between mateirals. In this article we look at wear between several popular steel grades and Dura-Bar ductile iron grades.
Sure, Dura-Bar machines better than most steels, but don't overlook the significant potential for heat treat cost savings as well. Especially if you are using a low-carbon steel requiring a carburizing process.
Check out this cost estimate overview and see if Dura-Bar will work for you.
The hardest material does not always provide the most wear resistance. For example, the graphite found in Dura-Bar acts as a natural lubricant to increase wear resistance, even as it lowers Rockwell readings.
Even heat-treated, Dura-Bar ductile iron out wears many grades of steel. Review our report to find out how and why.
We are often asked, "Can Dura-Bar be welded?". The simple answer is "Yes, both gray and ductile CAN be welded.” Iron welds in about the same amount of time as steel. Just like machining, it requires a different process than steel to maximize the results.
Dura-Bar 4.0” diameter 80-55-06 continuous cast ductile iron is being machined into gears and induction hardened to Rc 55 – 60 at the tooth root.
The purpose of this study was to determine the effects of matrix structure and power setting variations on the hardness and microstructure of the heat treated gear. The goal of the study is to determine optimal settings for each and incorporate those settings into the material specification and standard processing parameters for Dura-Bar and the heat- treat vendor that is performing the induction hardening.
