Technical Discussions

We are coming across lot of Engg. materials in Piping Design field, with a variety of
Test Certificates.

I think it will be better if we discuss / share our knowledge by initiating discussions here about some of them.

As a beginning I will start with HIC (Hydrogen Induced Cracking).

I think HIC test requirement is there for materilas used in Crude Oil service where there
is a high Hydrogen Ion concentration.

But we are specifying sometimes a maximum 0.43 % of Carbon Equivalent also along with
HIC testing.
Has anybody got any Clue.. what is the significance of this 0.43% CE?

Is it related to Hardness ?

Regards,

Balakrishnan

[Non-text portions of this message have been removed] Received on Mon May 16 02:10:00 2005