composition manganese less than requirment of ASTM A36

[Tran Van Vuong]

Dear All,

 

Please help me in PMI testing for material ASTM A36 thickness over 20.0mm, the composition requirement of manganese is (0.8 – 1.2)%. But result of test is less than 0.8%. Other testings are accepted (tensile, bending, elongation).

 

Please advice me this result is accepted or not.

 

If not, please advice the solution.

 

Thank you in advance.

 

TRAN VAN VUONG

[Pablo Acelajado]

January 18, 2010

 

Hello Tran!

 

You did not mention the value that you are getting but only indicated that it is lesser than the lower limit. If all other tests are OK, then you need to discuss the matter with your customer for a concession so that it will be accepted.

 

Thanks.

 

PJA

 

SAVE TREES  - THINK BEFORE YOU PRINT

---

[Tran Van Vuong]

Thank you very much,

 

Please advice me for detail as blow:

 

Plate 20mm

 

Plate 30mm

 

 

TRAN VAN VUONG

Email: vuo...@phateco.com

Website: www.phateco.com

---

[Vairamuthu Ramar]

Dear Mr. Tran,

You can go for spectrometer analysis of chemical composition. That is the best method to determine % of elements. PMI test is mainly for identification of materials, it wont show exact values at any point of time. 

Regards

R Vairamuthu

---

From: vuon...@gmail.com

To: material...@googlegroups.com
Subject: [MW:4072] composition manganese less than requirment of ASTM A36

Date: Mon, 18 Jan 2010 10:52:58 +0700

---

New Windows 7: Simplify what you do everyday. Find the right PC for you.

[snba...@aol.in]

In the case of  30 mm plate, the carbon is marginally less and you can negotiate with your customer. In case of any other enquiry, visit http://blog.weldwell.com for free advice.

 

S.N.Bagchi,

Editor, Blog.weldwell.com & welding fraternity

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[saqib jalal]

Go via the Spectroscopy

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SAQIB JALAL
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[Pablo Acelajado]

January 18, 2010

 

Tran,

 

Thanks for the details. Manganese is really OUT for both thicknesses. The other elements are generally acceptable as per ASTM A 36 assuming there is no minimum value of 0.20% specified for Copper.

 

You need the Heat Analyses Mill certificates of those plates from your steel suppliers or the PMI readings to comply with ASTM A 36. Otherwise, you really need the concession for acceptance.

[babu k]

Hi,

 

The reduction in Mn may be compensated by Carbon content,

 

Also the exact Mn content value u can cross check with wet analysis.

 

 

 

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Thanks & regards,

K.Babu
Singapore

[A D]

Hi,      PMI values are not exact value, so the below value of Mn is not a major problem. If you want confirm the correct value, select the wet analaysis method.   Louis Welding Inspector Singapore --- On Tue, 19/1/10, babu k <kbab...@gmail.com> wrote:

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[Shashank Vagal]

The reduction in Mn may be compensated by Carbon content,

Well, it is not all that simple a metallurgy. Mn can take care of C but I doubt how much same can be said about C... Shashank Vagal

--- On Tue, 19/1/10, babu k <kbab...@gmail.com> wrote:

From: babu k <kbab...@gmail.com> Subject: Re: [MW:4092] composition manganese less than requirment of ASTM A36 To: material...@googlegroups.com Date: Tuesday, 19 January, 2010, 7:44 PM

[Tran Van Vuong]

Dear All and Louis,

 

Thank you very much.

 

I would like to study “wet analysis method”. Do somebody know this ?

 

Please advice.

 

TRAN VAN VUONG

 

---

[PREM SHANKARDUTT NAUTIYAL]

Hi TRAN VAN VUONG

For C & S, Nitrogen analysis - LECO instrument gives us the perfect results.
Rest elements can be rechecked by Wet Chemical Analysis if there is any dispute in spectrometer(VES)/ PMI analysis.

Wet chemical analysis is done by Titration for other elements and requires chips / drillings of the sample you want to analyse. Generally about 1-2 grams are required for each element to analyse.
You can get the details about the procedure from any Metallurgical / Chemical Laboratory in your vicinity / surrounding area or company..

Regards

Prem Nautiyal
Godrej,Mumbai.

On Wed, 20 Jan 2010 10:33:14 +0530 wrote

>



Dear All and Louis,



Thank you very much.



I would like to study “wet
analysis method”. Do somebody know this ?



Please advice.



TRAN VAN VUONG

From:
material...@googlegroups.com
[mailto:material...@googlegroups.com]
On Behalf Of A D
Sent: Wednesday, January 20, 2010
8:14 AM
To: material...@googlegroups.com
Subject: Re: [MW:4096] composition
manganese less than requirment of ASTM A36







Hi,


PMI values are not exact
value, so the below value of Mn is not a major problem. If you want confirm
the correct value, select the wet analaysis method.





Louis


Welding Inspector


Singapore

--- On Tue, 19/1/10, babu k

wrote:

The INTERNET now has a personality. YOURS! See
your Yahoo! Homepage.

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PREM S NAUTIYAL
CELL : 9820313278

[Plate Steel]

Dear Tran,

As for your doubts for carbon steel plates A36,in my opinion,there is no big problem.A36 is just one kind common carbon structural steels.Sometimes,it is replace by steel grade ASTM A283Gr.C(this steel's Mn has no Min.limited,just as Max.0.90%) for many end users.

If you want to know more chemical composition and mechnical property for ASTM A283GrC steel,you also can find on http://www.xinsteel.com/astm-a283-a283m/a283-grade-c.html

So you had better talk with the engineers from your end customer for this point,hope they would accept.Good luck.

Eric from Xinsteel Industrial Co.,Limited

在 2010年1月18日星期一 UTC+8上午11:52:58，Vuongphateco写道：