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OCTG 7″ 29# 2535-110 VAM 21 R2

This 7″ 29# 2535-110 VAM 21 R2 casing is made from Alloy 2535 (UNS N08535), a cold-hardened nickel-based alloy engineered for use in highly sour (H₂S) environments with moderate chloride levels, offering high strength up to 350°F. Classified as a Type 4c alloy in MR0175/ISO15156, it provides outstanding resistance to H₂S-related corrosion and is qualified for use up to 200 psi H₂S at 350°F. The VAM 21 connection delivers high seal integrity and structural reliability, making this casing well-suited for HPHT wells and other critical downhole applications.

Available Quantity

2,680

FT

Condition

Unused

Mill Year

2021

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

7

in.

Nominal ID

6.184

in

Nominal Wall Thickness

0.408

in

Drift

6.059

in

Special Drift

6.125

in

Strength

Minimum Yield Strength

110

KSI

Minimum Ultimate Tensile Strength

120

KSI

Collapse Pressure

8,530

PSI

Internal / Burst Pressure

11,220

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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