Forged Valve Body

Forgings for Wellhead and X'mas tree equipments, includes Valve Bodies, Closure, Casing Head, Spindle, Valve Ball, Tubing Head

AISI 4130 Forged Bodies for wellhead equipments

 

Material Type: Low alloy steel AISI 4130

RAW MATERIAL:  Forging, bar stock on mechanical tubing

Service:  ydrogen sulfide (H2S)

MATERIAL PROPERTY DESIGNATION: 75K

 

MATERIAL COMPOSITION:

COMPOSITION	C	Mn	P	S	Si	Cr	Mo	Ni	V
LIMITS	0.27-0.35	0.4-0.8	0.025-max	0.025-max	0.15-0.45	0.8-1.3	0.15-0.35	0.5- max	0.3 max

 

ALLOWABLE MELTING PRACTCE:

Material produced to this specification shall be made to fine grain practice using one opf the following melting practice:

-          Basic oxygen process (BOP).

-          Electric furnace with vacuum degassing of vacuum processing.

-          Electric furnace with argon stirred degassing.

-          Electric furnace followed by Argon Oxygen Decarburization (AOD).

-          Electric furnace followed by either electro slag remelting (ESR) OR VACUUM ARC REMELTING (VAR).

-          Vacuum induction melting.

-          Electric furnace or induction melting following by a ladle refining process.

 

 

HOT WORKING PRACTICES:

Ali wrought materials shall be of pressure vessel quality and shall be formed using a hot working practice which produces a wrought structure. For material produced as a forging, the minimum acceptable total hot work ratio, relative to ingot size, shall be 3:1.

 

Mechanical properties requirements:

-          Tensile strength, Min.                  95,000 PSI

-          Yield strength, Min.                     75,000 PSI

-          Elongation in 2”, min.                  18%

-          Reduction in Area, min.                35%

-          Surface Hardness                          197-235 HB