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OCTG 6.625″ 28# 2535-110 Plain End R2

COMING SOON! Alloy 2535 (UNS N08535) is a high-strength, nickel-based alloy engineered for severe sour (H₂S) environments with moderate chlorides, up to 350°F. It offers superior H₂S resistance over stainless steels, making it ideal for HPHT and acidic injection wells. Qualified as a type 4c alloy under MR0175/ISO15156, it withstands up to 200 psi H₂S at 350°F.

Available Quantity

11,400

FT

Condition

New

Mill Year

2026

Manufacturer

Corrosion Resistant Alloys

Location

Texas, USA

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Size

Nominal OD

6.625

in.

Nominal ID

5.791

in

Nominal Wall Thickness

0.417

in

Drift

5.666

in

Special Drift

—

in

Strength

Minimum Yield Strength

110

KSI

Minimum Ultimate Tensile Strength

120

KSI

Collapse Pressure

10,160

PSI

Internal / Burst Pressure

12,120

PSI

Disclaimer: The burst and collapse figures displayed are based on the API dimension tolerance of 87.5% of nominal wall thickness. Note that martensitic, duplex, super duplex, and nickel alloys often have tighter dimensional tolerances, therefore, increased strength ratings. The properties do not factor connection performance ratings. If your application requires more information ratings, please contact our technical services team, and we happily assist you.

Alloy

2535

Family

Nickel Alloy

Corrosion Resistance Level

High

Alloy Description

Alloy 2535 (UNS N08535) is a cold-hardened nickel-based alloy engineered for corrosion resistance in highly sour (H2S) environments with moderate chloride levels, providing high strength up to 350°F.

Compared to stainless steels, 2535 offers enhanced protection against the effects of H2S, making it suitable for use in downhole tubular components, packers, and other subsurface equipment in sour wells under high-pressure, high-temperature (HPHT) conditions, as well as in Acid Gas Injection (AGI) wells. However, it is essential to evaluate all environmental factors, such as H2S, CO2, temperature, pH, and chloride concentration, before selecting the appropriate material.

UNS N08535 is classified under MR0175/ISO15156 as a type 4c alloy, with no restrictions for H2S partial pressure below 270°F, and it can withstand 200 psi H2S at 350°F.

Elemental Composition

C
6
Carbon
0.03%
Si
14
Silicon
0.5%
P
15
Phosphorus
0.03%
S
16
Sulfur
0.03%
Cr
24
Chromium
24%‒27%
Mn
25
Manganese
1%
Fe
26
Iron
29.41%‒44.5%
Ni
28
Nickel
29%‒36.5%
Cu
29
Copper
1.5%
Mo
42
Molybdenum
2.5%‒4%

Name

Plain End

Licensee

Category

Thread Type

Description

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