Super 13 Chrome

Also Known As

• Super Chrome 13
• Super 13CR
• 13CRS
• SM13CRS®
• CR13S
• 13CrSS
• 13Cr-HP2
• HP2-13CR
• Hyper II
• Hyper 2
• HP2

Suitable Applications

Corrosive environments containing CO2 , and H2S ≤ 1.5 psi

High-pressure, high-temperature (HPHT) oil and gas wells

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

Super 13 Chrome

UNS S41426 • HP-2 | Datasheet

The Super 13 Chrome alloys, UNS S41426 and HP-2, are quenched and tempered martensitic stainless steels intended for corrosion resistance in sweet (CO2) and mildly sour (H2S) environments with moderate chloride content up to 350°F.

Super 13 Chromes offer improved mechanical properties and increased resistance to the effects of CO2 , H2S, chlorides, pH, and temperatures when compared with standard 13 Chrome. The higher strength and temperature resistance, relative to 13 Chrome L80, allow their use in deeper wells with high pressure and high temperature (HPHT) conditions, as downhole tubular components, packers, and other subsurface equipment. Super 13 Chromes also provide increased resistance to H2S and chlorides relative to Modified 13 Chrome, allowing for use in mild sour environments.

UNS S41426 is included in NACE MR0175/ISO15156 Table A.19, which provides a recommended limit of 1.5 psi partial pressure H2S. API 5CRA/ISO13680 classifies it as Group 1, Category 13-5-2 alloy acceptable for sour service, in the 95 ksi yield strength condition.

Chemical Composition

Per API 5CRA Table A.2
CCrNiFeMo
0.02135BAL2
(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

API 5CRA / ISO 13680 Group 1 Category 13-5-2
GradeYield
Strength
ksi
Tensile
Strength
ksi
Elongation
%
Hardness
HRC
NACE MR0175/ISO 15156
H2S Sour Service Limits
minmaxminminmax
80809590Function of specimen size27Table A.19H2S ≤ 1.5 psi,
pH ≥ 3.5
959511010527
11011014011532110 Grade not recommended for sour service
*Non-standard mechanical properties and grades are made available upon agreement.

Typical Physical Properties

  70°F200°F350°F
Densitylbs/in30.280.280.28
Thermal ExpansionX10-6/°F5.95.9
Elastic Moduluspsi x 10629.328.728.2
Poisson Ratio0.30.30.3
Thermal ConductivityBtu/ft h °F9.19.710.7
Specific HeatBtu/lb °F0.10.110.12
Yield Strength De-Rating%1009187

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