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pipelinevzla
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Join Date: May 2009
Posts: 10

Material Requirements: SCC vs HIC

05/15/2009 9:14 AM

What is the difference between selecting a material requirements of SCC and HIC.

thanks
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Anonymous Poster
#1

Re: Material Requirements: SCC vs HIC

05/15/2009 4:52 PM

dunno. what does SCC and HIC mean?
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Stewie
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Join Date: Jan 2009
Posts: 42
Good Answers: 3
#2

Re: Material Requirements: SCC vs HIC

05/16/2009 12:45 AM

????Do you mean SSC (Sulfide Stress Cracking)????
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Malcolm Stephen
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Join Date: Mar 2009
Location: Sydney, Australia.
Posts: 126
Good Answers: 11
#3

Re: Material Requirements: SCC vs HIC

05/17/2009 6:52 PM

Not quite my area of expertise however, the following quote is from the web address below, I hope it helps.

"This cracking is also called as sulfide corrosion cracking, which is generally classified into hydrogen induced cracking (HIC) and sulfide stress corrosion cracking (SSCC)."

http://www.sciencedirect.com/science?_ob=ArticleURL&_udi=B6V2X-4H0S78R-5&_user=2322062&_rdoc=1&_fmt=&_orig=search&_sort=d&view=c&_acct=C000056895&_version=1&_urlVersion=0&_userid=2322062&md5=bbb0f30ab66454752020899b187ee4e4

and there's always Stress Corrosion Cracking (SCC)
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strider6
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Join Date: May 2007
Posts: 225
Good Answers: 4
#4

Re: Material Requirements: SCC vs HIC

05/18/2009 2:24 AM

SSC (sulphide stress cracking) and HIC (Hydrogen induced caking) are two different forms of hydrogen related mechanisms of damage of a materials. The "basic" difference between the two is that is the first, SSC ,you need "stress" in the second HIC you don't need "stress". there are different forms of hydrogen related damage and these two are the most frequent in oil & gas for example. also the first is a form a damaged related to the presence of H2S and water.

SSC, and HIC, requirements and material selection is covered by an international standard, NACE MR 0175/ ISO 15156 where you find limits in terms of partial pressure of H2S, temperature, chlorides... for carbon steel and corrosion resistant alloys.

this doc is a good guide:

Use of International Standard

NACE MR0175/ISO15156

corrosion prevention & protection
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deanding
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Join Date: Oct 2013
Location: Jiangsu,China
Posts: 4
#5
In reply to #4

Re: Material Requirements: SCC vs HIC

10/25/2013 10:54 PM

thanks for detalied reply

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