Cronidur 30 vs 420 SS 3

[aggies21]

Below is a material analysis results and hope someone can help out.

C .30%
Mn .36%
P <.010
S <.001
Si .30%
Cr 12.03%
Ni .08%
Mo .27%
Cu .02%
Al <.01
Sn <.01%

Hardness 34 HRc

 

[COKA]

Hello,

I have never heard of Cronidur 30, but the chemistry that you supplied above is super close to AISI 420 SS (with a trace of Ni, Cu, Al and Sn). Could you give more information on chronidur 30? What is the application for this material?

Coka

 

[aggies21]

The application is a gear. I only heard of the other material from reading a trade artical. I don't know all the properties of Cronidur 30.

 

[metengr]

COKA:
Here is some information on Cronidur 30. It apparently was developed by FAG and is a high performance bearing steel;

http://www.bardenpressoffice.co.uk/1.html

 

[arunmrao]

As a casting I have produced lot of castings for paper mill applications. The only change was that Carbon was 0.35% instead of 0.3%. This can be machined and later hardened and tempered to desired hardness.

 

[TVP]

This is definitely NOT Cronidur 30-- Cr and Si are too low. See the following for more information:

http://www.bardenbearings.com/PDF CD/PB18.PDF