A212B 1

[SweetDewMe]

I need to recertify a pressure vessel from the 50s, and the material of the shell is A212B. This material is not used anymore. Does anyone know of an equivalent to this material?

 

[metengr]

The closest equivalent I can think of is ASME SA 515 Grade 70.

 

[vesselfab]

it all depends on what you are calling "recertify"

if you are going to try and rerate the vessel, it has to meet current code rules and a-212 does not

if you are just going to put it back in service....hydro to the old u-1a form and make sure it has original stamping and paperwork and you can use it as long as you are comfortable with it.

by the way.....NBIC hates to rerate vessels, especially if you are downgrading because of wear or erosion

 

[SweetDewMe]

well, we are just enlarging two manholes on it. So, for my Compress model I need to input a material for the shell and obviously A212B is not a choice.

 

[vesselfab]

oh you are performing an alteration on the vessel.

you better check with your A-I before doing anything on that antique

 

[stanweld]

If your temperature is 650 F or below you can sustitute the design allowables for A-515-70. Your Safety factor will be 4:1, assuming 1950's manufacture.

 

[unclesyd]

You should have no trouble making an alteration on SA212. We have a Horton Sphere made from SA212 and have make several alterations and numerous repair of cracking.

As stated above make sure you check with the local jurisdiction and your AI.

 

[JoeTank]

stanweld,
In the EARLY 1950s ASME VIII had lower allowables based on a factor of safety of 5:1. The 4:1 factor came in around 1952, I think.

Joe Tank

 

[Christine74]

There is a table that lists modern equivalents to some obsolete ASME materials in Appendix B of Jawad and Farr's Guidebook for the Design of Asme Section VIII Pressure Vessels.

It lists the contemporary equivalent to SA-212-B as being SA-515-70, as metengr suggests.

 

[jte]

Joe-

I looked up the '37, '43, '46, '49, '50, '51, '52, and '56 codes. Looks like the change you're thinking of went into effect with the 1950 ed. The war years clearly had an impact on welding and materials technology. in '37, the max allowable SE (double V welds) was 8 ksi. The 1943 ed looks more like the material tables we're used to, with an allowable stress for SA212-B at temps not exceeding 650° of 17.5 ksi. The 1946 ed brings the allowable back down to 14 ksi and this is continued to the 1949 ed. The 1950 ed kicks the allowable stress back to the 17.5 ksi.

SweetDewMe-

Depending on service history, SA212-B material can be worked relatively easily. Unless it is in some degrading environment like a high hydrogen partial pressure, there should be no issues welding to the material. As others have pointed out, tell Compress you're using SA515-70 or 516-70 with pre-98 allowable stresses and the design should come out just fine.

Christine-

Another source is the ASTM Subject Index which states: A 212 Discontinued 1967. Specification for High Tensile Strength Carbon Silicon Steel Plates for Boilers and Other Pressure Vessels. Replaced by A 515, A516. So both the A515 and A516 series steels replaced the 212 series. From my perspective, the 516 series is used nearly exclusively vs the 515 option. In fact, I don't recall ever working a 515 vessel, might have seen one or two once upon a time...

jt

 

[unclesyd]

jte,

The 65 ASME code book still list SA212 A/B with allowable values to 1000F albeit very low values at 1000F. There are no restrictions on temperature to the 1000F.
If the material was used for low temperature it had to also meet the ASTM A300 specification for impact values.


SA 212B had an allowable (1965) of 17,500 up to 650F

 

[JoeTank]

jte,
A star for your historical clarifications. Thanks.

Wasn't A201 also withdrawn when A212 was withdrawn? I thought they were both withdrawn and the A516 and A515 materials replaced them.

Joe Tank

 

[jte]

Uncle-

I didn't mean to imply an upper limit of 650 deg for the material, just for the stresses I was referring to. I didn't check if the max allowable temp underwent any changes, though if someone needs stresses for a particular code year at a particular temp its easy for me to check...

Joe-

I'll try to remember to look up A201 in the index tomorrow. Can't say that I recall ever working on a vessel made of that material, though.

jt

 

[SweetDewMe]

I finally found the actual ASTM documentation on this.

http://www.astm.org/cgi-bin/SoftCart.exe/DATABASE.CART/WITHDRAWN/A212.htm?E+mystore

This states that A212 was replaced with A515, just as you all told me. Thanks!

 

[jte]

Joe-

Yes, A201 has the same note as A212.

SweetDew-

Interesting link - it only states that it (and A201 if you look there also) was replaced by A515 with no mention of A516. The hard copy index lists both A515 and A516 as replacements.

jt