Very interesting discussion, but midway through the last comment I saw "B3 is very prone to creator cracks," and it made me chuckle .
ER90S-B3 CR-MO WELDING WIRE
STATEMENT OF LIABILITY- DISCLAIMER
Any suggestion of product applications or results is given without representation or warranty, either expressed or implied. Without
exception or limitation, there are no warranties of merchantability or of fitness for particular purpose or application. The user must fully
evaluate every process and application in all aspects, including suitability, compliance with applicable law and non-infringement of the
rights of others. The Harris Products Group and its affiliates shall have no liability in respect thereof.
APPLICATION:
90S-B3 is used to weld such alloys as 2 1/4% Cr-1% Mo steels, which are found in high temperature and high pressure piping and vessels.
May also be used on carbon steels to Cr-Mo steels but should always have careful control of preheat, inter-pass and post-heat to avoid
cracking. Use with a pre-heat and inter-pass temperature of 375°f minimum.
TYPICAL MECHANICAL PROPERTIES AS WELDED:
(Post weld heat treatment 1250—1300°f for 1 hour)
ER90S-B3 seems like it requires the most work of all . Do you have an oven, of will you be using a torch?
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