heat treatment of seamless cold worked tube SB 338 GR.2 for heat exchangers.

[NAVNEET YADAV]

Dear All,
Is it necessary to do heat treatment of seamless cold drawn titanium tubes of ASME SB 338 GR.2.

 

[MJCronin]

NAJEEB,

Heat Treatment of titanium tubes; ASME SB 338 GR.2. is sold as a "value added" service by the tube suppliers.

It is necessary if your heat exchanger design demands it ....


MJCronin
Sr. Process Engineer

 

[EdStainless]

The HT required by B338 is a stress relief. It is just to get the properties into the right range.
These materials are never annealed, they go from massive billets to finished tube with just stress relief along the way.
This is why they have such an extreme grain orientation texture.
The modulus in the various directions (circumf, long, through wall) can be 30% different from each other.

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P.E. Metallurgy, consulting work welcomed