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30NCD12 Trf. Bon(R118-134) alternate

30NCD12 Trf. Bon(R118-134) alternate

30NCD12 Trf. Bon(R118-134) alternate

(OP)
I am working on a job that specifies the above mentioned material (or 30NCD16 Bon. A Spec. AIR9160). I need to purchase 2" round bar and need a readily available alternative material.  If anyone has the details for this material or can tell me where to find the specs it would be appreciated.  I am hoping the R118-134 or the AIR9160 also specifies the condition/temper as well, as I don't have any further information on the requirements than I have listed here.

 

RE: 30NCD12 Trf. Bon(R118-134) alternate

If you want a US supplier, then LESCALLOY® 35NCD16 VAC-ARC® from Latrobe Steel is probably your only choice.  The nominal C concentration is a little higher than 30NCD16, but there should not be any problem with its service performance.  Here is a link with some additional information from Latrobe:

http://www.latrobesteel.com/assets/documents/datasheets/35NCD16.pdf

There are several European producers of this grade, including Corus, Ugitech, DEW, and probably Aubert + Duval.  It is stocked by some aero service centers in Europe.

RE: 30NCD12 Trf. Bon(R118-134) alternate

(OP)
Thanks for the supplier info.  Is there any way to know the heat treat based on the information given?  I will give them a call and see what they have to say.

RE: 30NCD12 Trf. Bon(R118-134) alternate

I think the designation "R118-134" is supposed to  indicate the ultimate tensile strength, which is often denoted by Rm in European specifications.  Typically this steel would be quenched and tempered to a strength range of ~ 1100-1380 MPa (160-180 ksi), so perhaps R118-134 means 1180-1340 MPa.  The AECMA organization(www.aecma.org) that issues standards like AIR1960 is currently not functioning, so I don't know how you can verify this without contacting the customer who originated the drawing.  Another thread here at Eng-Tips discussed 30NCD16 in the past:

thread330-113770: Euro Steels & specs
 

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