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Hi all, Has anyone experience with bolting material X6NiCrTiMoVB25-15-2 (austenitic)? This is used for tightening pressure boundary parts of a valve. Up to which temperature is possible to use this material and for how long? I am afraid about the possibility of having intergranular corrosion...

Hello, The standards AD2000 and TRD421 talk about the discharge coefficent αw. The standard EN 4126-5 talks about the discharge coefficient Kd and the de-rated discharge coefficient Kdr. And Kdr=0.9*Kd The standards ASME VIII and API RP 520 talk about the discharge coefficient Kd. αw and Kdr...

Hello. Is it acceptable if I have a valve designed according to EN 12516-2 and the pressure boundary parts are made of ASTM/ASME materials? If I have welds among these pressure boundary parts, the Welding plans and procedures should be according to EN or ASTM/ASME standards? The NDTs of these...

Hello. I need to define a procedure to perform the FATT test for the material X20CrMoV11-1. In theory this procedure will be based in the standards A370 and ASME Section III NC2300. I know that we need to perform some tests up to different temperatures to define a curve. What I don't know is...

Hello. The scope of this standard is for "highly stressed components". Where is the limit? When can I know if one material is higly stressed or not? When do I need to apply the standard 12680-1 (for general purposes) or 12680-2 (highly stressed components)? thanks and regards.

Hello, I have a doubt about the material X46Cr13 and its standard EN 10088-3. If you check the standard 10088-3, you will see in some pages that you can perform +QT800 to the material X46Cr13. In other pages it is written +QT850 instead of +QT800. Do you know what is valid? Tha values of...

Do you know, where I can find a good example for ANSYS of plasticity model for pressure vessels? Thanks to all.

I should have to make a non-linear study (plasticity) of one shaft with ANSYS. This shaft is put under torsion stresses. I have to study its damage and its limit. Which type of study you recommend to me?

Do you know any website where I can find welding properties of materials? (for example, min. and max. welding temperature of 316L, or A-105/N, and many other materials and properties..) Thanks and regards,

What do you thing about phenolic coatings and PTFE coatings? Are they good solutions for high temperature and corrosion services? Thanks and regards.