Modified 13 Chrome

Also Known As

• 13 Chrome Modified
• Modified 13 Chrome
• Modified 13Cr
• SM13CRM®
• 13 Chrome-HP1
• HP1-13CR
• HP1
• HP-1
• Hyper 1
• Hyper I

Suitable Applications

Corrosive environments containing moderate chloride content and low pH

High-pressure, high-temperature (HPHT), sweet (CO2) environments

Product Availability

FORMS:
Seamless Pipe, Tubing

OD:
MIN OD: 2-7/8”
MAX OD: 10-3/4”
Standard & Non-Standard Sizes Available

RANGE:
R1, R2, R3

Modified 13 Chrome

Datasheet

13CRM / HP1 Applicable EnvironmentsThe 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.

Chemical Composition

 CCrNiFeMnSiMoPS
13CRM≤ 0.0311 - 144 - 6BAL≤ 1≤ 0.50.2 - 1.2--
HP-1≤ 0.0412 - 143.5 - 4.5BAL≤ 0.6≤ 0.50.8 - 1.5≤ 0.02≤ 0.01
(mass %)

Manufacturing Process

PROCESSDESCRIPTION
Steel MakingMade by electric furnace (EF) or basic oxygen furnace (BOF)
Pipe MakingManufactured by traditional hot tube manufacturing processes
Heat TreatmentQuenched and tempered

Specified Mechanical Properties

 
GradeYield
Strength
ksi
Tensile
Strength
ksi
Elongation
%
Hardness
HRC
NACE MR0175/ISO 15156
H2S Sour Service Limits
minmaxminminmax
80809590Function of specimen size27Not recommended for sour service
959511010528
11011014011532
*Non-standard mechanical properties and grades are made available upon agreement.

Typical Physical Properties

  70°F250°F400°F
Densitylbs/in30.280.280.28
Thermal ExpansionX10-6/°F5.9
Elastic Moduluspsi x 10629.629.328.9
Poisson Ratio0.30.30.3
Yield Strength De-Rating%1009187

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