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OCTG 9.625″ 53.5# 2535-110 VAM 21 R3

The 9.625″ 53.5# 2535-110 VAM 21 R3 casing is crafted from Alloy 2535 (UNS N08535), a cold-hardened nickel-based alloy designed for superior corrosion resistance in highly sour (H₂S) environments with moderate chloride concentrations. Offering high strength up to 350°F, it provides enhanced protection against H₂S, making it ideal for demanding downhole tubular components, packers, and other subsurface equipment in sour wells. The VAM 21 R3 connection ensures reliable torque, high sealing integrity, and performance in HPHT conditions, with Alloy 2535 being fully compliant with MR0175/ISO15156 for sour service under 270°F.

Available Quantity

517

FT

Condition

Unused

Mill Year

2020

Manufacturer

Nippon Steel

Location

Texas, USA

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What is PipeFacts?

Field Inspection

Completed!

Receiving Inspection

In Progress

Final Inspection

Not Started

Certified Report

Not Started

Field Inspection Complete!

In this first step of our PipeFacts™ quality assurance process, we send our field services team to inspect material in its stocked location. During the initial evaluation, we ensure that this material is suitable for acquisition and suitable for prime applications. Once the field inspection is complete, we move material to one of our regional storage and inspection hubs for further inspections.

What is

Field Inspection

?

10%
  • Traceability to MTR's
5%
  • Visual Body Inspection (VBI)
  • Visual thread Inspection (VTI)
  • Tally
  • Drift

Size

Nominal OD

9.625

in.

Nominal ID

8.535

in

Nominal Wall Thickness

0.545

in

Drift

8.379

in

Special Drift

8.5

in

Strength

Minimum Yield Strength

110

KSI

Minimum Ultimate Tensile Strength

120

KSI

Collapse Pressure

7,950

PSI

Internal / Burst Pressure

10,900

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

VAM 21

Licensee

VAM

Category

Premium

Thread Type

Threaded & Coupled

Description

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