M50 tool steel
M50 tool steel
(OP)
I have a customer who is considering
AMS6490 or AMS6491 for bearing races
I was told that the AMS6491 is more refined than the AMS6490
Consumable vs Double Vacuum melted.
what would the basis be to use one or the other.
& How would one justify it.
Thanks
AMS6490 or AMS6491 for bearing races
I was told that the AMS6491 is more refined than the AMS6490
Consumable vs Double Vacuum melted.
what would the basis be to use one or the other.
& How would one justify it.
Thanks





RE: M50 tool steel
To determine if either was adequate for the job, you should look at SAE AMS standard and see if the minimum properties match what you have in mind.
I imagine if the application is critical (e.g. safety, people's lives are at risk in case of failure), you could justify 6491 over 6490.
RE: M50 tool steel
"An Introduction to Premium Melting"
http://www.cartech.com/about.aspx?id=3404
Latrobe Steel melting options
http:
"Ovako Steel Cleanliness Specifications"
http://www.ovako.com/index.asp?r=1136
"Development of clean steel - advantages in ladle metallurgy and testing technology"
http://www.ovako.com/index.asp?r=1138
NASA tech paper with a table showing difference in performance between CEVM and VIM-VAR (double vacuum process) for gear surface fatigue (relevant to bearings as well)
http://