I agree, pre-tin the stainless steel part with a very strong flux intended for stainless steel, then wash it thoroughly. http://www.ccis.com/home/hn/page27.html http://www.solderconnection.com/specsheets/S26_Flux_TB.pdf Karen Tellefsen - Electrical Testing Alpha / 109 Corporate Blvd./ S. Plainfield, NJ 07080 [log in to unmask] 908-791-3069 From: Paul Edwards <[log in to unmask]> To: <[log in to unmask]>, Date: 09/28/2012 11:29 AM Subject: Re: [TN] soldering stainless steel Sent by: TechNet <[log in to unmask]> Torsten, The last time I did this type of thing I did the following: Pre-tin S/S soldering areas with the same solder metallurgy as your solder paste using a very active acid flux (I used a hydrobromic acid type flux), wash thoroughly, then place on PCB like regular component and/or RF shield... Some adjustment need to be made depending (that word again...) on the joint configuration and part... Paul Paul Edwards Process/Quality Engineering Surface Art Engineering -----Original Message----- From: TechNet [mailto:[log in to unmask]] On Behalf Of Torsten Hagge Sent: Friday, September 28, 2012 8:17 AM To: [log in to unmask] Subject: [TN] soldering stainless steel Hi all, has anybody experience with soldering stainless steel parts directly on a PCB? What solder process work fine? Application is a medical sensor with body contacts. Torsten Kind regards KRISTRONICS GmbH Torsten Hagge Gewerbegrund 5-9 24955 Harrislee Telefon +49 (0) 461 7741-624 Telefax +49 (0) 461 7741-642 [log in to unmask] www.kristronics.de Meet at electronica 2012, A6, 409 Gerichtsstand Flensburg, Handelsregister: HRB 1433 FL Geschäftsführer Dipl.-Ing. oec. Thormod Ohm Ust-Id-Nr. DE 811182059 Bankverbindung: Deutsche Bank AG Flensburg, Konto-Nr. 4216610, BLZ 21570011 IBAN: DE32 2157 0011 0421 6610 00, BIC: DEUT DE HH 215 ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________ ***** Please note that my E-Mail address has changed ***** Please address mail to me using our new [log in to unmask] address. ____________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please visit http://www.symanteccloud.com ____________________________________________________________________ ______________________________________________________________________ This email has been scanned by the Symantec Email Security.cloud service. For more information please contact helpdesk at x2960 or [log in to unmask] ______________________________________________________________________