Normalizing procedure for steel heat treatment
Normalizing procedure for steel heat treatment
(OP)
I have a set of SA106 steel pipe, which I want to normalize (heat treatment) to improve its properties to reach the minimum values of impact test (Charpy V notched) at -42ºC (-43.6ºF).
I can't get SA333 pipes, so my unique option is to do a normalizing and try to pass the impact test.
The pipes are: 2" XXS, 3" XXS and 6" SCH120.
Can anybode suggest a curve temperature-time to do the normalizing heat treatment (we have equipment for this)?
Would be better to do a 'double' normalizing heat treatment to increase possibilities to pass the impact test?.
Thank you in advance.
Mario
I can't get SA333 pipes, so my unique option is to do a normalizing and try to pass the impact test.
The pipes are: 2" XXS, 3" XXS and 6" SCH120.
Can anybode suggest a curve temperature-time to do the normalizing heat treatment (we have equipment for this)?
Would be better to do a 'double' normalizing heat treatment to increase possibilities to pass the impact test?.
Thank you in advance.
Mario





RE: Normalizing procedure for steel heat treatment
I would try the following using coupons for the normalizing heat treatment followed by impact testing;
1. Heat to 1600-1650 deg F and hold for 1 hr/inch of material thickness.
2. Air cool with air movers.
3. Impact test
4. Repeat steps 1 and 2 above for the second coupon.
By the way, what is your minimum CVN value?
RE: Normalizing procedure for steel heat treatment
Thank you very much for your help.
Mario
RE: Normalizing procedure for steel heat treatment
I would also recommend both the single normalizing treatment proposed by metengr and a double normalize treatment on sample coupons.
Good Luck
RE: Normalizing procedure for steel heat treatment