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Inconel C276 N10276 2.4819 Corrosion Resistance Alloy CRA Plates And Sheets

Inconel C276 N10276 2.4819 Corrosion Resistance Alloy CRA Plates And Sheets

Categories:Steel Plate

Model No.:Inconel C276 N10276 2.4819

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DETAIL INFORMATION

Inconel C276 N10276 2.4819 Corrosion Resistance Alloy CRA Pipe

 

C276 (UNS N10276) is a cold hardened nickel-based alloy intended for the most extreme well conditions up to 450°F.

 

In addition to its exceptional corrosion resistance under the most severe conditions, higher strengths may be achieved with C276 than other nickel alloys. It is therefore used for downhole tubular components, packers, and other subsurface equipment under the most extreme environmental conditions found in high-pressure, high-temperature (HPHT) wells, saltwater Injection wells, and Acid Gas Injection (AGI) wells. However, all environmental factors, including H2S, CO2 , temperature, pH, and chloride concentration, should be considered before final material selection.

 

The alloy is classified in MR0175/ISO15156 as a type 4e alloy, with no restrictions to a partial pressure of H2S below 400°F and resistant to 1000 psi H2S at 450°F.

 

Hastelloy C276 alloy (UNS N10276) was the first wrought, nickel-chromium- molybdenum material to alleviate concerns over welding (by virtue of extremely low carbon and silicon contents). As such, it was widely accepted in the chemical process and associated industries,

 

ALSO KNOWN AS

• C-276
• SMC276®
• INCONEL® Alloy C-276
• Hastelloy® C-276
• W.Nr. 2.4819

 

Applications

Typical chemical process industry (CPI) applications include reactors, heat exchangers, and columns, marine hardware, Chemical processing components Agrichemical and petrochemical production.

 

CHEMICAL COMPOSITION

C

Cr

Ni

Fe

Mn

Si

Mo

Co

P

S

V

W

≤ 0.02

14.5 - 16.5

BAL

4 - 7

≤ 1

≤ 0.08

15 - 17

≤ 2.5

≤ 0.03

≤ 0.03

≤ 0.35

3 - 4.5

 

MANUFACTURING PROCESS

PROCESS

DESCRIPTION

Steel Making

Made by electric furnace process or blast furnace followed by Vacuum Oxygen Decarburization (VOD) process or Argon Oxygen Decarburization (AOD) Process

Pipe Making

Manufactured by traditional tube manufacturing processes, High strength tubulars should be furnished in cold worked condition

Heat Treatment

Solution Annealing Process before final cold drawing

 

API 5CRA / ISO 13680 Group 2 Category 15-60-16

Grade

Yield
Strength
ksi

Tensile
Strength
ksi

Elongation
%

Hardness
HRC

NACE MR0175/ISO 15156
H2S Sour Service Limits

min

max

min

min

max

110

110

140

125

11

35

Table A.14

No limit ≤ 400°F,
Refer to table for temperatures up to 450°F

125

125

150

130

10

37

140

140

160

145

9

38

140 Grade not recommended for sour service

*Non-standard mechanical properties and grades are made available upon agreement.

 

TYPICAL PHYSICAL PROPERTIES



70°F

200°F

400°F

Density

lbs/in3

0.32



Thermal Expansion

X10-6/°F

6

6.2

6.7

Elastic Modulus

psi x 106

29.8

29

28.3

Poisson Ratio


0.3



Thermal Conductivity

Btu/ft h °F

5.9

6.4

7.5

Specific Heat

Btu/lb °F

0.1

0.1

0.1

 

Specification

HASTELLOY C-276

ASTM

ASME

DIN

Plate sheet and Strip

B575 / B906

SB575 / SB906

17750

Seamless, Pipe and Tubing

B622 / B829

SB622 / SB829

17751

Welded Pipe and Tubing

B626 / B751 B619 / B775

SB626 / SB751 SB619 / SB775

17751

Rod, Bar and Forgings

B462 / B564 / B574

SB564 / SB574

17752 / 17753 / 17754

 

Impact Strength

 

Type of Test

 

Test Temperature

 

Form

Thickness

Impact Strength

in

mm

ft.lbf

J

Charpy V-Notch

RT

Plate

0.394

10

348

472

Charpy V-Notch

RT

Plate

0.472

12

351

476

 

Hardness

Form

Hardness, HRBW

Typical ASTM Grain Size

Sheet

88

3.5 - 6

Plate

88

1 - 5

Bar

86

1 - 5

 

Welding and Fabrication

HASTELLOY C-276 alloy is very amenable to the Gas Metal Arc GMA/MIG), Gas Tungsten Arc (GTA/TIG), and Shielded Metal Arc (SMA/Stick) welding processes. Matching filler metals (i.e. solid wires and coated electrodes) are available for these processes, and welding guidelines are given in the “Welding and Fabrication” brochure.

 

HASTELLOY C-276 alloy can be hot forged, hot rolled, hot upset, hot extruded, and hot formed. However, it is more sensitive to strain and strain rates than the austenitic stainless steels, and the hot working temperature range is quite narrow. While cold work does not usually affect the resistance of HASTELLOY® C-276 alloy to general corrosion, and to chloride-induced pitting and crevice attack, it can affect resistance to stress corrosion cracking. For optimum corrosion performance, therefore, the re-annealing of cold worked parts (following an outer fiber elongation of 7% or more) is important.



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