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[MW:2848] RE: 2847] Tests required on A350LF2 to use temp. for gas / ambient temperature -(minus)40 Deg C

By Materials & Welding
We should always specify the class also; A350 LF2 Class 1 fittings are factory tested at -45.6 °C, unless otherwise specified for lower temperatures, where as A350 class 2 fittings are recommended for up to -18 °C only.

A350 LF2 Class 1 fitting can be used depending on your design temperature (please check MDMT, and not process/operating temp)

CVN impact testing requirement and energy values shall be as per the design code or contract specifications, whichever is stringent, for e.g. B31.3 refer para 323.2.2.

-----Original Message-----
From: materials-welding@googlegroups.com [mailto:materials-welding@googlegroups.com] On Behalf Of Velu
Sent: Thursday, July 30, 2009 8:37 AM
To: Materials & Welding
Cc: gr_velu@yahoo.co.in
Subject: [MW:2847] Tests required on A350LF2 to use temp. for gas / ambient temperature -(minus)40 Deg C


HI,

I would like to know whether material A350LF2 can be used for
process / ambient temperature of -40 to 50 Deg C. If yes, what are the
testing required to be carried out to ensure that the valve and other
fittings perform well for this temperature.

I know LTCS A350LF2 is the right choice but the package supplier is
not able to supply valve body with LTCS A350LF2 and he can only supply
with A350LF2.


Thanks in advance

Velu


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