COMMON TRADE NAMES: Super 17 Chrome, Super 17Cr, SM17CRS®
17 Chrome is a quenched and tempered martensitic-ferritic stainless steel intended for corrosion resistance in sweet (CO2) environments with moderate chloride content, requiring high strength up to 400°F. 17 Chrome offers improved mechanical properties and increased resistance to the effects of CO2 , chlorides, pH, and temperatures when compared with standard 13 Chrome. The higher strength and temperature resistance, relative to Super 13 Chrome, allow it to be used in deeper wells with high-pressure and high-temperature (HPHT) conditions as downhole tubular components, packers, and other subsurface equipment.
17 Chrome may be considered as a cost-effective alternative to duplex stainless steels such as 22 Chrome for higher pressure and temperature HPHT conditions. However, all environmental factors, including H2S, CO2 , temperature, pH, and chloride concentration, should be considered before final material selection.
17 Chrome is not recommended for sour service.
|≤ 0.03||16 - 18||4 - 5.5||BAL||≤ 0.5||≤ 0.05||2 - 3||2 - 3||≤ 0.1|
|Steel Making||Made by electric furnace (EF) or basic oxygen furnace (BOF)|
|Pipe Making||Manufactured by traditional hot tube manufacturing processes|
|Heat Treatment||Quenched and tempered|
|NACE MR0175/ISO 15156
H2S Sour Service Limits
|125||125||145||130||Function of specimen size||38||Not recommended for sour service||H2S ≤ 1.5 psi,
pH ≥ 3.5
|Elastic Modulus||psi x 106||28.1||27.3||26.7|
|Yield Strength De-Rating||%||100||88||85|