VM 22 125

VM 22125.png

V​M 22 125 is a Corrosion Resistant Alloy. It is iron based plus main alloying elements Cr, Ni and Mo. The PRE is above 35. Structure is Duplex (austenite and ferrite). VM 22 125 is delivered in cold work condition; It can be hardened by drawing or pilgering.

APPLICATIONS

VM 22 125 is recommended when pCO2 is above 2psi / 0.14bar with chlorine. Acceptable temperature is up to 450°F / 232°C. Some partial pressure of H2S is acceptable depending on temperature of use.

VM 22 125 can be used as tubing or casing.

PERFORMANCES

VM 22 125 has been tested from room to high temperature for SCC and SSC with different levels of H2S.

​Typical Chemical composition​​

UNS​CCrNiMo​NPRE​
S31803​0,03 max​21 - 234.5 - 6.52.5 - 3.5​0.08 - 0.3≥ 35​

PRE=Pitting Resistance Equivalent = %Cr + 3.3 %Mo + 1.65 % W + 16 % N

D​ensity = 7.78kg/dm3

MECHANICAL PROPERTIES 

​​In solution annealed condition

​​Yield Strength 

Ksi (​MPa)​

​Ultimate Tensile

Strength ksi (MPa)  

​Elongation
​%   
​Mean Hardness
HRC 

​​​Min.

​Max.

​​Min.

​ Min.

​ Max.

125 (862)145 (1000)130 (896)10%​​36

Control hardness through wall   ​

​Less than 0.357"
(Less than 9.00mm)
​0.354" to 0.499"
(9.00 to 12.69mm)
​0.500" to ​0.759" 
(12.70 to 19.04mm)
​0.750" to 0.999"
(19.05 to 25​.39mm)
1000" and above
(25.40mm and above)
​3.04.0​5.06.0​​6.0

PHYSICAL PROPERTIES

Physical properties & ​evolution with temperature ​ ​ ​ ​ ​ ​


Characteristic ​​
Unit ​​Tem​perature (°C) ​ ​ ​ ​ ​
25​50100150200250
Yield Strength
derating
%​1.0000.9430.8710.8190.7810.751
Ultimate Tensile Strength
derating
%1.0000.9720.9320.9020.8800.862
Thermal conductivityW m-1 K-1​ 14.6215.1116.1516.9017.3318.10
Thermal diffusivityx 10-6 m²s-13.873.924.034.134.244.35
Thermal expansionx 10-6 / deg. C-13​.11​3.213.413.513.7
Young's modulusGPa200.0198.4195.0191.8189.4185.4
Resistivitynano Ohm.m8618809139459781011
Specific heat capacityJ.g-1.K-1​0.490.500.520.530.530.54​​​

FIELD RECORDS

  • Middle East: e.g. 3 1/2" 9.2# ​​​VAM TOP®,
  • USA: e.g. 5 1/2" 23# VAM TOP®.
STORAGE & HANDLING RECOMMENDATION​

Avoid pollution by contact from carbon or low alloy steel (pipes or parts).

Avoid atmospheric pollution with iron (e.g. concrete plant).

Please refer to​ the VAM® BOOK .

 
 

Brochu​​res​​

OCTG Product Selec​tion Guide​​​​​​​​

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