Julio,
there's no AISI 4130 pipe material. As Al has perfectly explained, AISI standards (AISI is the American Institute of Steel and Iron) simply states the chemical composition of a certain steel identified by a number. In this case, the number is 4130.
American standards covering pipe materials are ASTM, ASME Section II, API, AWWA. If there's another one, I don't know. ASME Section VIII covers pressure vessels, not pipe. ASME Section IX rules the approval of welding procedures and welders. Pipe materials are also covered by ISO standards, but I'm not familiar with them.
So, chances are that the piping you're talking about is actually SA 519 Gr. 4130. SA means an ASME Section II material. The majority of SA materials are identical to ASTM ones, the only difference being the letter S before the letter A, which ASTM doesn't have.
P numbers include steels of similar chemical composition and mechanical properties, from which you can expect similar behavior. Welding procedures for the same P numbers are the same, or very close to each other.
I've taken a look at the chemical composition of AISI 4130 and ASTM A-519 Gr. 4130 steels and they're exactly the same.
C: 0,28 - 0,33. Mn: 0,4 - 0,6. Si: 0,2 - 0,35. Cr: 0,8 - 1,10. Mo: 0,15 - 0,25. P and S as low as possible.
So, the P number you're looking for is the one for SA-519 Gr. 4130.
Giovanni S. Crisi
Sao Paulo - Brazil
PS: En que lugar de la Argentina vivís?
I think Julio's concern is to know the Pno that he can put in his WPS.
I will be surprised if the base metal mentioned has the Pno given in ASME IX.
~Joey~
Giovanni, gracias por tu respuesta. Lo que me estas describiendo es similar a lo que hasta el momento pude averiguar, así que gracias por esa información que es correcta y confirma lo que averigüe. El tema es que en ASME IX, no hay numero P para el SA-519 Gr.4130, por lo que concluyo que tendré que armar el procedimiento de acuerdo a los requerimientos para materiales sin P asignado. Mi consulta era para saber si alguien había tenido alguna experiencia con un caso similar.
La aplicación de mi cliente es una cañería, pero como suele pasar, alguien le esta pidiendo la certificación bajo ASME en lugar de otra norma que seria mas correcta para el material y formato que esta trabajando, consecuencias del desconocimiento que hay en el mercado.
Soy de Buenos Aires, y trabajo con Lincoln Electric aquí en Argentina.
Muchas gracias por tu tiempo para darme la respuesta, Saludos!
Giovanni,
thanks for your answer. The information you`re given to me is correct.
The thing is… there is no P number for SA-519 Gr.4130 in Asme IX, so, i think the WPS has to be made as a no P number material requirements.
Maybe ASME isn`t the right code for this certification, but my client customers are requiring ASME… i think because of the unknloweldge of the right codes for this application. My question was to know if anyone has some experience with this material and ASME IX.
Thaks for your time and your answer.
Who is a better player Pele or Maradona?
The above is as hard as your question
~Joey~
Messi?
Oh no! Neymar!
Giovanni S. Crisi