Dear Saravanan,
Pls. refer UG 84 ( c) (5)
UG-84(c)(5) For all Charpy impact tests the following
test temperature criteria shall be observed:
(a) For Materials of Nominal Thickness Equal to
or Greater Than 0.394 in. (10 mm). Where the largest
obtainable Charpy V-notch specimen has a width along
the notch of at least 0.315 in. (8 mm), the Charpy test
using such a specimen shall be conducted at a temperature
not warmer than the minimum design metal temperature.31
Where the largest possible test specimen has a width along
the notch less than 0.315 in. (8 mm), the test shall be
conducted at a temperature lower than the minimum design
metal temperature31 by the amount shown in Table
UG-84.2 for that specimen width. [This latter requirement
does not apply when the option of (c)(2)(a) above is used.]
Hope this will be helpful
Cheers
MM
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Saravanan Sornam
Sent: Tuesday, June 18, 2013 9:20 AM
To: materials-welding@googlegroups.com
Subject: Re: [MW:17957] BASEMATERIALIMPACTTESTINGREQUIREMENT
Hi Mr.Veera ,
Could U pls tell me the clause no. in ASME VIII Div I , as per your statement, i wanted to confirm this.
Regards,
Saravanan
On Tue, Jun 18, 2013 at 1:40 PM, veera raghava kommisetti <kommisetti@gmail.com> wrote:
Since 7.5 is less than 80% of base metal thickness (8mm), you need to do impact test at -45 + (-3) = -48 Deg
On Mon, Jun 17, 2013 at 7:55 PM, Ankit Gandhi <asgandhi.90@gmail.com> wrote:
Dear Expert,
We are making a vessel according to ASME Sec. VIII Div. 1
MDMT is -45 Degree .C
Thickness 10 mm
Now, If i am using Impact specimen size 7.5 than I have to reduce the Impact Temperature? & yes then How much?
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