[MW:946] RE: 908] Bolting Materials For ASME & PED

EN10269 also has bolt material for low temp application

-----Original Message-----
From: materials-welding@googlegroups.com
[mailto:materials-welding@googlegroups.com] On Behalf Of Bathula
Raghuram (Mumbai - PIPING)
Sent: Thursday, July 10, 2008 9:55 AM
To: PED2000@googlegroups.com; materials-welding@googlegroups.com
Subject: [MW:908] Bolting Materials For ASME & PED

SA320L7/SA194 Gr4 combination also can be used (no matter what raw
material they use, generally it is from SA29, AISI 4140..._), one need
to specify and MDMT and energy requirements while ordering.

Haldor Topsoe spec recommends DIN17290/26CrMo4/1.7219 for -11 to -60
deg.C, may check the equivalents as it is a very old one and the std
might be obsolete now.

Please share other alternate/equivalent standards for LT application

-----Original Message-----
From: PED2000@googlegroups.com [mailto:PED2000@googlegroups.com] On
Behalf Of Rajesh
Sent: Wednesday, July 09, 2008 8:25 PM
To: Process Equipment Design
Subject: [PED:102] Bolting Materials For ASME & PED

Dear All,

Many a times I face a problem of Selecting Bolting Material Impact
tested as per PED ( i.e. with 54J Energy at Lowest Schedule operating
temperature).

Let me know which material is best when I shall be using it for (-) 25
Deg C

As I understand SA193 Gr B7 which is readilly available cannot give
52J below 10 Deg C. EN19 is preferred material for this before Heat
treatment.

If I am correct,SA320 Gr L7 which is gives 52J below -25 Deg C. But
what shall be raw material for this grade before heat treatment.

Regards

Rajesh Bhavsar

--~--~---------~--~----~------------~-------~--~----~
To post to this group, send email to materials-welding@googlegroups.com
To unsubscribe from this group, send email to materials-welding-unsubscribe@googlegroups.com
For more options, visit this group's bolg at http://materials-welding.blogspot.com/
The views expressed/exchnaged in this group are members personel views and meant for educational purposes only, Users must take their own decisions w.r.t. applicable code/standard/contract documents.
-~----------~----~----~----~------~----~------~--~---