Thanks, both of you.
The quality manager just informed me that we have two batches’of 17-4 that do not meet the min hardness value of 45Rc
The first one was aged at 875F for 1 hour; hardness: 35Rc and the second batch was aged at 1100 for 1 hour: Hardness 32Rc.
From your answer it is clear...
I want to increase the hardness of 17-4 H1100 from 36 Rc to 45 Rc;
Do a supplementary heat treatment at 900F (H900) is enough or do I need to do a solution heat treating before?
Hi,
I need a little help for welding heat resistant stainless steel casting alloys (similar to ASTM A 351 gr HT)
Is anybody having some information to share about: what welding rod better to use, pre-heat temps, cooling speed, and post-weld heat treatment if any...
Thank you
CC
