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Anonymous Poster #1

Silicon Killed Steel Above 482°C (900°F) Service

12/13/2012 10:36 PM

ASME B31.3, Appendix F, F323.1 (2) states that " the possible conversion of carbides to graphite during long time exposure to temperatures above 427°C (800°F) of carbon steels, plain nickel steel, carbon-manganese steel, manganese-vanadium steel, and Carbon-Silicon steel.

ASME B31.3, Appendix F, F323.1 (4) states that," the advantages of silicon-killed carbon steel (0.1% silicon minimum) for temperatures above 482°C (900°F)".

One statement says graphitisation of C-Si steel above 427°C (800°F) service and another clause says C-Si steel advantage above 482°C (900°F).I am confused!

My understanding is that, 'Si' Killing is a kind of de-oxidation process like 'Al' killing during steel making.So,the steels which I have mentioned in the above ASME B31.3 clauses have Silicon content.Then why one steel is prone to graphitisation above 427°C (800°F) service temperature and another can perform like a superman without graphitisation above 482°C (900°F)" service temperature?Could you throw some light on this matter?

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#1

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 10:55 PM

Your quotations are incomplete and grammatically incorrect; maybe that is what is confusing.

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Anonymous Poster #1
#2
In reply to #1

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:06 PM

Quotations are correct,I checked it now also!I am not responsible for any grammatical errors occured in ASME statements!By the way,here I am looking for what ASME really mean by the second clause?Do you have any idea??

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#3
In reply to #2

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:17 PM

The second phrase is not even a complete clause. You left out something. Maybe you have a defective (or pirated) copy of ASME standards?

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Anonymous Poster #1
#5
In reply to #3

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:25 PM

Really??Do you know how to read ASME B31.3??Do you know in which page of ASME B31.3 contains that clause??

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#8
In reply to #5

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:34 PM

That's still not a clause. And don't you EVER dare to argue with me about grammar. Is that clear?

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Anonymous Poster #1
#11
In reply to #8

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:52 PM

OK,I have used 'states' in between!You can remove it and answer

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#12
In reply to #11

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 12:04 AM

That still did not fix it, because what you said they stated is still not a full clause.

But then, you are proving to be offensively incompetent. No wonder you are posting as an anonymous coward.

While you're at it, wipe the silly grin off your face.

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Anonymous Poster #1
#13
In reply to #12

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 12:10 AM

I am not came here for offence.I need the answer otherwise need some fun.That's all.I don't think that sky is going to fall due to lack of answer from CR4.By the way, CR4 provided anonymous facility and you don't have the right to question it.If you do so,then that is a big violation of CR4 forum rules.Lol

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#14
In reply to #13

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 12:19 AM

Reported.

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Anonymous Poster #1
#15
In reply to #14

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 12:20 AM

No problems!

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Anonymous Poster #1
#17
In reply to #12

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 1:33 AM

Yes, you are right, I forgot to mention clause 'b'!I got this vital information from 'anonymous poster2'!Though he emerged here to confuse me, but I utilised his answer to found the answer for my query!Modern way of learning.

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#18
In reply to #8

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 3:19 AM

Now, now. Would everybody play nicely, please?

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Anonymous Poster #1
#19
In reply to #18

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 3:30 AM

Welcome,I was seriously thinking that where is our PWSlack!There is no piping query in this forum with out PWSlack's answer/presence.

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Anonymous Poster #2
#4
In reply to #2

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:24 PM

The question seemed to start out has a good topic but your response to Tornado's (that's Tornado with 12,062 total CR4 postings and 423 postings judged by his CR4 peers to be GOOD ANSWERS) comment sets a bit of a bad tone to this thread.

Some things you may wish to consider if you plan to add additional postings to this thread:
1) You are responsible for your grammatical and other errors on this thread.
2) There is typically a single space after a comma.
3) There are typically two spaces after a period.
4) There are typically two spaces after a question mark that ends a sentence.
5) There typically are no spaces after a double quote.
6) Items enclosed in double quotes need closing double quotes in addition to the opening double quotes.
7) When you ask help from strangers you tend to get better responses if you project yourself in a friendly manner.
8) It might be fun to read what Lyn adds to your thread.

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Anonymous Poster #1
#6
In reply to #4

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:29 PM

I am not much bothered about tornado's good answer status in CR4 to nominate him in next Nobel prize contest!

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Anonymous Poster #2
#7
In reply to #6

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:31 PM

The answer to your question is "C".

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Anonymous Poster #1
#10
In reply to #7

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:49 PM

I think you do not know even how to count the number? I couldn't find 'C' in your previous reply!

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Anonymous Poster #1
#16
In reply to #7

Re: silicon killed steel above 482°C (900°F) service

12/14/2012 1:26 AM

Thanks dude for your answer 'C'.I just did a research based on your answer 'C' and found that there are many other clauses numbered in that section like a,b,c,d,e,f,g,h,i,j and K!Quite informative.This is the new way of learning.

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Anonymous Poster #1
#9
In reply to #4

Re: silicon killed steel above 482°C (900°F) service

12/13/2012 11:47 PM

I am not much bothered about the wast knowledge of current Nobel prize winner lyn also

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