COMMON TRADE NAMES: 13 Chrome Modified, SM13CRM®, 13 Chrome-HP1, HP1-13CR, HP-1, Hyper 1, Hyper I
The Modified 13 Chrome alloys, 13CRM & HP-1, are quenched and tempered martensitic stainless steels intended for corrosion resistance in sweet (CO2) environments containing chlorides up to 350°F. Relative to 13 Chrome, the Modified 13 Chromes provide increased strength and corrosion resistance at higher temperatures and chloride concentrations. Their higher strength and temperature resistance allow for use in deeper wells with higher pressure and temperatures, as downhole tubular components, packers, and other subsurface equipment.
While Modified 13 Chrome grades provide improved resistance to pitting corrosion relative to 13Cr L80, they are vulnerable to localized corrosion, SCC (stress corrosion cracking), and SSC (Sulfide Stress Cracking), so higher grades should be utilized for sour service or high chloride environments.
|13CRM||≤ 0.03||11 - 14||4 - 6||BAL||≤ 1||≤ 0.5||0.2 - 1.2||-||-|
|HP-1||≤ 0.04||12 - 14||3.5 - 4.5||BAL||≤ 0.6||≤ 0.5||0.8 - 1.5||≤ 0.02||≤ 0.01|
|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
|80||80||95||90||Function of specimen size||27||Not recommended for sour service|
|Elastic Modulus||psi x 106||29.6||29.3||28.9|
|Yield Strength De-Rating||%||100||91||87|