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brkmech
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Join Date: May 2009
Location: UAE
Posts: 82
Good Answers: 3

HIC Test

05/22/2012 2:17 AM

Where HIC test is required. What is the difference between SSC(Sulphide stress cracking) & HIC (Hydrogen Induced cracking)

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Anonymous Poster #1
#1

Re: HIC TEST

05/22/2012 3:11 AM

They are both the same in the result when they render a item unsafe to use.

Sulphide stress is created by Sulphur and Hydrogen by Hydrogen.

The source will make the differnce I believe.

Sorry can't help more other than to advise to make use of the internet as it is explained in various places.
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andy2175m4
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Join Date: May 2012
Posts: 4
#2

Re: HIC Test

05/22/2012 9:36 AM

Hydrogen induced Embrittlement is cause by heat treating in a less than pure, inert atmosphere.

It attacks for example titanium bolts. this condition is avoided by heat treating in a pure nitrogen atmosphere.
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nnshahbaroda
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Join Date: May 2012
Posts: 4
#3

Re: HIC Test

05/23/2012 4:35 AM

The HIC test reqirement is specified by client / end user, depending on Service. Please see PV Hand Book by Bednar. To pass the test, specific mettalurgy and hardness are required for material.

N N Shah, Baroda
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