Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

A105 and A216 GR WCB , PLease help !!!

A105 and A216 GR WCB , PLease help !!!

A105 and A216 GR WCB , PLease help !!!

Can anyones tell me what is the difference between A105 & A216 . I tried to purchase A105 body type ball valve but they only offer A216 GR WCB and said it will be same material. Is this true .

RE: A105 and A216 GR WCB , PLease help !!!

A105 is forged carbon steel
per ASME material group 1.1
The equivalent casting is A216 WCB, i.e.
unless you have any problems in buying a cast body valve the material is ok.


RE: A105 and A216 GR WCB , PLease help !!!

ASTM A105 and A216-WCB (or their ASME SA equivalents) are two different product forms.  A/SA105 is a forged material specification while A/SA216-WCB is a cast material specification.  The chemical composition for each material is essentially the same (low carbon steel) but there may be some very minor differences in exact ranges of minor elements.  Get copies of both material specifications and check them out for yourself.

What size valve are you trying to buy?  What is the fluid service and design conditions of your application?  

If you are purchasing a commercially mass produced valve then you will be subject to what the valve manufacturer produces or has in stock.  Valves 1/2" through 2" NPS are generally forged body valves.  If you are buying a valve larger than 2" NPS then you are generally going to get a cast body.  If you really want a forged valve body for your ball valve that is larger than 2" NPS, you will probably need to go to a specialty valve manufacturer and have one custom engineered to your specifications.  Such companies include Valvetron (Houston), Valvetech (Houston), and QAP (Oakland, CA), among others in the USA.  I am less familiar with companies outside of the US.  There may be some companies that offer both cast and forged bodies for ball valves in sizes larger than 2" NPS without going the custom engineering route but I am not personnally familiar with any.  

Evaluate your application and judge whether a cast body will work for you or if you still need a forged body.  

RE: A105 and A216 GR WCB , PLease help !!!

The answer of KSTaylor gives you the full scenario regarding to this two material specifications, when it comes to valve bodies material.

Please, be aware of the facility you are purchasing this valve for MUST have a "Piping Material Specification" (commonly referred as: "Piping Class") where you will find the valve caracteristics for every single service in "your" plant ... use it!! ... so you'll keep using the same materials the plant already have installed (for operation & maintenance this is a very good practice).  The Piping Class will also let you know wheter you need to buy a flanged; socket-welded or screwed valve.

RE: A105 and A216 GR WCB , PLease help !!!

What is difference between API 5L Gr.B and ASTM A106 Gr.B pipes ?

RE: A105 and A216 GR WCB , PLease help !!!

A106 Gr.B always is seamless but API 5L Gr.B can be seamless or welded manufactured.Mechanical & chemical properties for these two kind of pipes also slightly different.

RE: A105 and A216 GR WCB , PLease help !!!

Thank you all.
Your infos are valuable to me .

RE: A105 and A216 GR WCB , PLease help !!!

they are all a carbon steel.
A105 is forged, 206WCB is a casting steel.
Keep in mind that the defects aren't the same none the method of detecting them.
With WCB material body will be thicker than with A105 (factor of 0.8 and the low mechanical properties for casting ).

RE: A105 and A216 GR WCB , PLease help !!!

if ur pressure is not more than 500 psi then u can use a-216 wcb valves, 150 or 300 class, but if u would like to use more than 2000 psi u have not any other option except a-105 forged steel valve,
a-216 valves are avilable and manufacture from 150 class to 600 class
means max working pressure is 900 psi
and a-105 forged steel valves are manufactured for 3000 psi, 6000 psi, 9000 psi, and 12000 psi,,working pressure,,
after that pressure there is no more option excepth needle valve.

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members! Already a Member? Login


eBook - Integrating the Engineering Ecosystem
Aras Innovator provides multiple options for integrating data between systems, depending on the scenario. Utilizing the right approach to meet specific business requirements is vital. These needs range from authoring tools, federating data from various and dissimilar databases, and triggering processes and workflows. Download Now
Research Report - Simulation-Driven Design for SOLIDWORKS Users
In this engineering.com research report, we discuss the rising role of simulation and the paradigm shift commonly called the democratization of simulation. In particular, we focus on how SOLIDWORKS users can take advantage of simulation-driven design through two analysis tools: SOLIDWORKS Simulation and 3DEXPERIENCE WORKS. Download Now
White Paper - Industry 4.0 and the Future of Engineering Education
With industries becoming more automated, more tech-driven and more complex, engineers need to keep their skills and knowledge up to date in order to stay on top of this wave—and to be prepared for the Industry 4.0 future. The University of Cincinnati offers two online Master of Engineering degree programs designed specifically for practicing engineers. Download Now
eBook - The Design Gridlock Manifesto
In this eBook, you’ll learn 6 ways old CAD technology slows your company down and hear how design teams have put those problems to rest. “The Design Gridlock Manifesto” shares first-hand modern CAD experiences from 15 companies around the world. Download Now

Close Box

Join Eng-Tips® Today!

Join your peers on the Internet's largest technical engineering professional community.
It's easy to join and it's free.

Here's Why Members Love Eng-Tips Forums:

Register now while it's still free!

Already a member? Close this window and log in.

Join Us             Close