COMMON TRADE NAMES: 15Cr, Ultra Hyper Chrome, JFE-UHP™-15CR, UHP™
15 Chrome, or Super 15 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. 15 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.
15 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.
Super 15 Chrome, grade 125, is not recommended for sour service.
|≤ 0.04||14 - 16||6 - 7||BAL||≤ 0.6||≤ 0.50||1.8 - 2.5||≤ 1.5||≤ 0.02||≤ 0.005|
|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||150||135||Function of specimen size & strength||37||Not recommended for sour service|