VM 90 SS is a high H2S corrosion resistant grade low alloy steel. Its sour service resistance has been designed and material is quality control tested per lot. It is in accordance with API 5CT Grade C90 type 1 PSL 2 and NACE MR0175. It has a 90% SMYS threshold level of resistance to sour environment.
VM 90 SS can be used as tubing or casing with effluent containing H2S from room to high temperatures. VM 90 SS is available up to 16" and with heavy wall up to 1" and more. Recommended use is with pCO2 below 2psi / 0.14bar.
VM 90 SS is a 90ksi grade H2S resistant controlled at 90% SMYS in NACE A test conditions
Strength ksi (MPa)
Control hardness through wall
Quality Control corrosion performances - SSC
NACE TM 0177
Test type Test medium
Please refer to the VAM® BOOK and API RP5C1.