senex morosus moderator
- Jul 30, 2006
I have heard RR's steel claimed to be 440A, but most likely it's an Asian equivalent, such as 7Cr17MoV. It has a good reputation, whatever it is.
Concur. The Chinese steel mills don't make 440A. I've had several conversations with a tech rep from Sandvik. He had made a number of business trips to China. The Chinese mills make alloys to their own specs. To get actual 440A, it would have to be imported.
That being said, the composition of 7Cr17MoV is pretty close to that of 440A. Which is not to say that I know what alloy is being used for RR.