VM 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
PRE=Pitting Resistance Equivalent = %Cr + 3.3 %Mo + 1.65 % W + 16 % N
Density = 7.81kg/dm3
MECHANICAL PROPERTIES
In solution annealed condition
Min. | Max. | Min. | Min. | Max. |
| 125 (862) | 145 (1000) | 130 (896) | 10% | 36 |
|---|
Control hardness through wall
PHYSICAL PROPERTIES
Physical properties & evolution with temperature |
Characteristic | Unit | Temperature (°C) |
| 25 | 50 | 100 | 150 | 200 | 250 |
Yield Strength derating | % | 1.000 | 0.943 | 0.871 | 0.819 | 0.781 | 0.751 |
Ultimate Tensile Strength derating | % | 1.000 | 0.972 | 0.932 | 0.902 | 0.880 | 0.862 |
| Thermal conductivity | W m-1 K-1 | 14.62 | 15.11 | 16.15 | 16.90 | 17.33 | 18.10 |
| Thermal diffusivity | x 10-6 m²s-1 | 3.87 | 3.92 | 4.03 | 4.13 | 4.24 | 4.35 |
| Thermal expansion | x 10-6 / deg. C | - | 13.1 | 13.2 | 13.4 | 13.5 | 13.7 |
| Young's modulus | GPa | 200.0 | 198.4 | 195.0 | 191.8 | 189.4 | 185.4 |
| Resistivity | nano Ohm.m | 861 | 880 | 913 | 945 | 978 | 1011 |
| Specific heat capacity | J.g-1.K-1 | 0.49 | 0.50 | 0.52 | 0.53 | 0.53 | 0.54 |
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 .
