17-22 brake rotors 2

[MikeWryley]

thread330-212164

Heloman29, I have been trying to track down information of processing of brake rotors, I noticed on you post that you were using 17-22.

I have been trying in vain to find a supplier of this material or its equivalent, I need stock 3/8 inch thick, any clues would be appreciated

 

[unclesyd]

If will do a search on V17-22AS steel you will get information such as the following.
Link one is to all designations for the steel. Link 2 is to one of many forge shops that forge the alloy. Timken is a big producer of this material.

http://www.techsteel.net/datasearch/speciality_metals/ams_6294_ams_6371.vwf

http://www.steelforge.com/alloysteels.htm

 

[MikeWryley]

unclesyd,

I will check this out, much appreciated. I hope I don't have to buy 20K pounds for starters

The previous posts on this issue were also very helpful. I am trying to duplicate brake rotors for a military jet with brakes
made in Europe, and can't get any support (let alone a phone call)

regards
Mike

 

[unclesyd]

Appreciate the feedback.
I don't think you will have to buy that much as too many people carry it. Let the Forum know the end game as it may help someone else.

 

[MikeWryley]

unclesyd,

called Steelforge, they indicated they have never carried this alloy, Tech Steels recognized the number, has no stock but will look. Apparently this is a common item in Europe, not so much US.

I an trying to support the brakes on a former German jet fighter,a french company made the brakes and wheels and is a non-starter support wise. I wil be using off the shelf friction pads from a US commercial supplier, the stators are 4140. The rotors in the original brake have not been sampled, but two domestic supplied samples, one used and one new, incicated 17-22AS, 6458 or K23015. I hate to predicate the design on such a hard to find alloy, I would like a more US available substitute

I know enough about metallugy to know that I don't know anything.
I want to closely duplicate the exisitng materials as these brakes have to dissipate over 3 million ft lbs of energy on a normal stop, each

 

[swall]

I would contact Timken, as they were the ones that developed this alloy. They supplied our rotor material when I worked in aircraft brakes. Our stators were also 17-22 AS.

 

[unclesyd]

I agree that you should contact Timken.
You might try the forging companies. Here is one listing for Canton forge for 17-22AS as a forged part. Steelforge shows three grades for 17-22AS.

Hopefully you can get past the front desk to talk to someone who knows what's going on.

http://www.steelforge.com/forgings/forgingchart.htm

http://www.cantondropforge.com/aerospace.html

 

[unclesyd]

Here is very good paper on your material 17-22 steel

http://atmae.org/jit/Articles/jetley041207.pdf

You need to look the AMS numbers for 17-22 grades.
They are 6302, 6303, 6304, 6305, 6386, or 6436

 

[MikeWryley]

all,
thanks for the reference of 17-22,
everyone shows this alloy, no one carries it

got in touch with Timkem,
not only do they not have any, they are on allocation until September,(only taking care of existing commitments), no recent records of any shipments to distribution
I will look for the AMS numbers provided, but I have exhuasted every viable lead for the 17-22AS material, all were no quote or never heard of it, I have called so many people that I even had one guy know my question before I finished, as he had been contacted but someone else in thre steel biz

One brake manfacturer came back with the info that they use 4130,
seems a little short on Mo and Cr compared to 17-22, but off the
shelf at least

 

[MikeWryley]

unclesyd,

I read that article last night, was very germane to my issue,

Thanks

Mike

 

[unclesyd]

Now you know how it was before the Internet and why everyone wanted ny little black book for phone numbers to get pass the front desk.
Here are some more listings for forgings and wrought material.

http://www.coulter-faorge.com/manufacturing.htm#specalloy

http://www.clifford-jacobs.com/capabilities/impression-forging/

http://www.industrialmetals.com/productslist.asp?material=Allo

y&form=Forging&cmd=reset

http://www.robemetall.de/pages/en/delivery-program/usa/ams-rought-low-alloy.php

 

[salmon2]

If you are open to substitute other than this 17-22, please loop up Timken Impact 7, 8 or 10. Only difference is they don't typically include any V.

 

[MikeWryley]

I've given up on the 17-22A or AS, and AMS 6302,
there is no 3/8 plate available anywhere,

I am taking salmon2's advice and looking for Timkem product,

Thanks for all the inoputs to date

 

[unclesyd]

Here is Alloys International that lists 17-22 if you are still interested.

http://www.alloysinternational.com/search/node/17-22

 

[MikeWryley]

uncle syd,
unfortunately, "Alloys International" is just another broker with no stock

Thanks anyway,

Mike