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I work in a valve company. I received a MTR of materials SA-995 grade 6A from a supplier.Chemical composition & mechanical properties conforms with the above materials but PREN value not conform. Should the materials conforms with SA-995 grade 6A. Thanks,

I have some springs to be use in nuclear industry. These spring need to approve CMTR as per ASME NCA-3800. The test certificate does not provide Mill MTR. Should it require mill MTR as per NCA-3800. Thanks

Can anyone tell me is there any difference of average grain size (ASTM El12 Test Methods) for the steel of SA-479 316 & 316L. Thanks

Is chemical specification of 330 Stainless Steel and UNS N08330 (Alloy Fe-Ni-Cr-Si) same Thanks

For the spring used in a nuclear industry some customer ask for the spring ASME Code Section III, Division 1, Class 1, 2010 Edition, 2011 Add some other for ASME Code Section III, Division 1, Class 1, 1980 Edition, S80 Add. So what is the basic difference between these two. Thanks

The specification of chemical composition of SB-511 UNS N08330 (Ni-Fe-Cr-Si Alloy) does not specify of Fe composition just mention Fe remainder. I got a MTR of the above material chemical composition comply but not include the Fe content. But they certify the material is SB-511 UNS N08330...

Anybody tell me why ASME II-D recommended for 316 Stainless Steel maximum temperature 1500F whereas for 316L 850F although 316L is superior quality. Only difference of these two type of steel are carbon content (.08 & .03 Max).

Is it advisable to do liquid penetration after passivation & pickling of a supper duplex stainless steel (SA-995 Grade 6A).

Can anybody tell me what is the difference between EN 10204 type 3.1 & EN 10204 type 3.2. Thanks.

Some MTR certify that "the material is free from Mucury, Cadmium, Radium,low melting element and Alpha source contamination". What is the bad effect in these element in ferrous and nonferrous material. What is the alpha source. Thanks

What are the basic feature should have in a material test report other than mechanical chemical test report. I got some mtr of 316ss from various supplier how do I confirm that this one is from original melting shop.

Hi, We got a valve cast body from a foundry. The body made from SA-995 grade 4A they give the result of Ferrite content 52% tested I.A.W ASTM E 562 of the cast body. Our allowable ferrite range is 35% to 55%. But after machining it and tested ferrite content on the machined surface with...

For cast body of a valve (material SA-995 grade 6A) say limitation on use as per code case 2244. What does it mean. Thanks

Anybody tell me what is the difference between ASME code III section 1 & ASME Code III section 3. Thanks, Azizur

Hello, Anybody tell me what is the difference between asme sa-479 & sa-276 Thanks Azizur

Anybody know how to perform the following test of the spring as mention in ASME Section III Division 1 NB-3594.9. The permanent set of the spring (defined as the difference between the free height and height measured a minimum of 10 min after the spring has been compressed solid three...

We are making Body and Bonnet with the material SA-216 Gr.WCB, WCA and WCC for high pressure valve. I am not sure which one is the superior quality of the above three grade.And also which is the superior SA-352 Gr. LCA, LCB & LCC? Thanks

we are making valve disk & nozzle by stainless steel 316 and hard faced the seat with stellite #6/6B. Is it possible to weld nozzle/disk 410 stainless steel welded with Inco 625 or alloy C276 followed by welding with stellite #6/6B to make seat. That means on the bottom (base metal) 410 ss...

we are making valve disk & nozzle by stainless steel 316 and also hard faced the seat with stellite #6/6B. Is it possibe to make same kind of disk & nozzle by martensitic ss 410, hard faced with stellite #6/6B. Thanks, Azizur