Replacement Steel for AISI 1144?

[Motorhead]

We currently use 1144 steel for motor shafts. This material is not the easiest to machine and we are considering a different material. My initial inclination is an 11L41. It has a higher machinability index with similiar material properties. The material must also be magnetic. Does anybody have any other suggestions of possible materials that will machine easily with high tolerance/finish and is magnetic?

 

[JoeA]

I would definitely look at 11L41. It should make a significant improvement in machining with almost no drawbacks except a slight cost difference. It is widely available.

 

[deporter]

17.4 ph esr maybe worth a look!<br>
I use it for various componants and find it easily machinable and it gives a very good finish.

 

[ecampos]

Stainless steel 416.<br>I design high speed motors, (50k-250k) rpm. We use 416 stainless for motors up to about 100k, and 4043 alloy steel for faster motors.&nbsp;&nbsp;The 416 SST machines nice and is highly magnetic as is the 4043 alloy steel, but it does not machine as nicely, some grinding is required to get a good finish, but for the speeds we run, grinding is necessary to ensure low runout. <p>Edson Campos<br><a href=mailto:edsoncampos@earthlink.net>edsoncampos@earthlink.net</a><br><a href= > </a><br>

 

[Panther]

Panther manufacture's crankshaft's out of 1144 material as well. We have just recently started using 1215 as a alternative. The material properties and strengths are comperable and there is a significant cost savings as well as a increase in machineability.

 

[Herrmann]

I agree with Panther. I have used 1215 for pumps and motor shafts and it machines well.