ISO 7778 Z30 plates not requiring HIC testing 1

[svi]

Why is that HIC testing not a requirement for ISO 7778 Z30 plates.

 

[SJones]

Not a requirement of whom, or what document?

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[svi]

It so states in a middle east Oil company spec. I was thinking that someone with experience of using the ISO specification plate would know why. I see that HIC testing is a requirement for flat rolled products as plates because of Sulphide inclusions in the material structure interstices.

 

[SJones]

Some companies have a belief that the manufacturing process applied to plate to achieve Z grade properties also provides resistance to HIC that does not need confirmation by HIC testing.

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.

 

[TVP]

Nice answer, Mr. Jones.

 

[svi]

Can you think of the relevance of the through thickness properties and resistance to HI cracking?

 

[SJones]

Sulphide shape control in steel making would be the first thing that springs to mind: it would have an effect on both properties.

Steve Jones
Corrosion Management Consultant

http://www.linkedin.com/pub/8/83b/b04

All answers are personal opinions only and are in no way connected with any employer.