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Associate

Join Date: Dec 2013
Posts: 29

Killed Steel

01/23/2014 11:02 PM

hai all,

<imp>

For an ASME interview the material purchase specification contains 'Fully killed' nut the material certificate does not have the marking related to that. Can any one help me, how to solve the issue??

any code reference??

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Guru

Join Date: Oct 2008
Posts: 42375
Good Answers: 1689
#1

Re: Killed Steel

01/24/2014 8:05 AM

Search for "killed steel".

You either know this stuff, or you don't.

You don't.

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Associate

Join Date: Dec 2013
Posts: 29
#3
In reply to #1

Re: Killed Steel

01/25/2014 5:21 AM

Dear sir, My doubt is how to Identify killed steel from the material certificate, if it is not mentioned by word. Is there any scope in the material composition?

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Active Contributor

Join Date: Sep 2013
Location: Newcastle-under-Lyme
Posts: 13
#4
In reply to #3

Re: Killed Steel

01/25/2014 5:38 AM

If you knew what killed steel is, you would be able to recognise it as such from the information on the certificate, viz. mechanical properties and chemical properties, determined by person(s) that performed the prerequisite tests. As already mentioned, look up Killed Steel; armed with the necessary knowledge, you will determine whether the steel is indeed, killed.

Had you studied Properties and Materials, you would know this.

http://en.wikipedia.org/wiki/Deoxidized_steel

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Active Contributor

Join Date: Sep 2013
Location: Newcastle-under-Lyme
Posts: 13
#8
In reply to #3

Re: Killed Steel

01/27/2014 1:11 PM

It may have the letter 'K' hard-stamped upon the material?

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Active Contributor

Join Date: Mar 2010
Posts: 18
#2

Re: Killed Steel

01/24/2014 10:57 PM

I was not surprised to see a sarcastic answer to an intersting question.

"Either you know it or you don't"

This used-to-be valuable resouce is becoming a bore.

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Guru

Join Date: Nov 2012
Posts: 633
Good Answers: 13
#5
In reply to #2

Re: Killed Steel

01/25/2014 8:06 AM

If you notice, most of the sarcastic comments are to questions concerning - job interviews - test questions, etc. The reason these questions are asked is to determine the depth of knowlege someone has related to that. There are too many job applicants who slept through classes and graduated with a piece of paper that says they are qualified, but they are NOT. So much for the education of today.

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Guru

Join Date: Nov 2010
Location: Virginia, Georgia, Idaho
Posts: 1079
Good Answers: 30
#6

Re: Killed Steel

01/25/2014 10:15 AM

If there is something you don't know, and you suspect that a google search is less than likely to provide a complete reference quality education, which may be voluntarily and graciously provided by a professional who has in in depth knowledge of the subject, very often informed by years of experience which will not be reflected in a google search, don't come to CR4. It's been co-opted by a few incredibly narrow minded people who have a readers digest condensed version of knowledge on every subject. If they don't know it, they can get it from wikipedia or google, and that is sufficient, but if they actually do have that valuable bit of experience you are looking for, God help the fool who uses that playground of inadequate information called the web. It is so tiresome. I'll use a common texting phrase. Just STFU.

__________________
PFR Pressure busts pipes. Maybe you need better pipes.
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Guru

Join Date: Nov 2006
Location: OH USA
Posts: 549
Good Answers: 27
#7

Re: Killed Steel

01/25/2014 10:46 AM

There is no marking requirement for products made from killed steels; only the material certificates tracing it back through the supplier to the steel mill. Killed steels are strongly deoxidized and are characterized by a relatively high degree of uniformity in composition and properties. The metal shrinks during solidification, thereby forming a cavity or "pipe", in the uppermost portion of the ingot. The pipe is usually contained within a refractory hot top and is removed by cropping during subsequent rolling.

The uniformity of killed steel renders it most suitable for operations such as hot forging, cold extrusion, carburizing and heat-treatment.

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Associate

Join Date: Dec 2013
Posts: 29
#9
In reply to #7

Re: Killed Steel

03/13/2014 10:41 AM

thank you so much..

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