Asking for equivalent grade material 1Cr12WMoV to ASME/AISI/JIS standard

[Rio Risnaldi]

Dear Engineer,


Nice to meet you in this forum. Trusted you very well today, even you have many activities today .

Actually, I have problem that I need information about the equivalent material 1Cr12WMoV. This material from China Grade, but I need equivalent from other standard that may be available in our country. Could you help to give some advice and reference material for standard ASME/AISI or JIS, mate?


please see on attached for detail spec material 1Cr12WMoV.
Looking forward to hear from you as soon as possile.


Thanks
Rio

 

[metengr]

What you need to do is to first develop a basic spreadsheet listing the mechanical properties of the Chinese material and compare these with the creep strength enhanced ferritic steels, like Grade 122 considered by ASME B&PV Code. The Chinese heat resistant material contains 12% Cr on average but the key alloy additions are tungsten (W) and vanadium (V) for high temperature creep resistance. So, you need to focus your effort on CSEF steels.

Also, you will need to compare creep and stress rupture data for elevated temperature performance of the Chinese steel. Good Luck.

 

[Rio Risnaldi]

Dear,


If you any advice for the nearest equivalent for this material using ASTM/AISI? we using this material for stem on governor valve.


Regards,
Rio

 

You may find it difficult or impossible to find a domestic grade that closely matches the composition of this alloy, whose composition includes a combination of minor elements. Probably that is not so important. Ultimately this alloy was chosen based on its properties of corrosion resistance and strength, including creep strength. The data sheet indicates a wide variety of generic applications and product forms, telling me it was not designed specifically for your application but selected because it could do the job.
.
All the 12% chromium steels have similar corrosion resistance and are heat resistant to varying degrees. I advise you start by determining the important characteristics required, and find a nominally similar domestic alloy that will do the task. Also, what are other manufacturers employing for the same part in similar valves?

"Everyone is entitled to their own opinions, but they are not entitled to their own facts."

 

[metengr]

Here is a tip, hire a materials expert to look at substitute material options for a governer valve stem application in elevated temperature steam service. Many factors need to be considered to ensure adequate performance.