G8 astm a333, doble normalizing and temepring or quenched and tempering?
G8 astm a333, doble normalizing and temepring or quenched and tempering?
(OP)
hello,
we are trying to manufacturing G8 according to ASTM A333. We have not any experience with this grade, so any help will be appreciated.
I have doubt about the heat treatment. This grade is so similar to the X10Ni9 (EN 10216-4), and in this standars, it says that the heat treatment depends on the wall thickness, and that the pipes could be normalizing before being Quenched and tempered
They also talk about the tempering cooling in air or in water.
So we have so many options, N+Q+T, Q+T, N+N+T..with different cooling media for the tempering
I suppose the best could be cut a sample and do some test at the laboratory ussing the different heat treatments.
And about the chemical composition, any sugestion??
thank you so much
we are trying to manufacturing G8 according to ASTM A333. We have not any experience with this grade, so any help will be appreciated.
I have doubt about the heat treatment. This grade is so similar to the X10Ni9 (EN 10216-4), and in this standars, it says that the heat treatment depends on the wall thickness, and that the pipes could be normalizing before being Quenched and tempered
They also talk about the tempering cooling in air or in water.
So we have so many options, N+Q+T, Q+T, N+N+T..with different cooling media for the tempering
I suppose the best could be cut a sample and do some test at the laboratory ussing the different heat treatments.
And about the chemical composition, any sugestion??
thank you so much





RE: G8 astm a333, doble normalizing and temepring or quenched and tempering?
Your heat treatment method will depend on component geometry and the handling capability of the supplier. Talk to the supplier, and see what they recommend. If you are the supplier, and I was the purchaser I would require heat treatment coupons using your process capabilities.
RE: G8 astm a333, doble normalizing and temepring or quenched and tempering?
RE: G8 astm a333, doble normalizing and temepring or quenched and tempering?
yes i have the ASTM A333, so i know about the options. "stanweld" you talk about choose the heat treatments depending on the wall thickness. Where in your opinion is the limit to choose one or the other? less that 1 inch? NNT and heavier wall thickness QT?
Any one know about a study/book, etc about this kind of steel that could be useful. I've found some interesting articles at the NIckel Insitute.
thanks again for you help.
RE: G8 astm a333, doble normalizing and temepring or quenched and tempering?
RE: G8 astm a333, doble normalizing and temepring or quenched and tempering?
http://www.arcelormittalna.com/plateinformation/do...
RE: G8 astm a333, doble normalizing and temepring or quenched and tempering?
the doc. of arcelor seems to be quite helpful. THANK YOU!