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Alloy 825 Downhole Seamless Control Line Tubing

Alloy 825 Downhole Seamless Control Line Tubing

OD: 1/8''~1/2'';
WT: 0.025''~0.065'';
Working Pressure: 60~120MPa;
Length: 50~4000 meters/reel;

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Product Details

Alloy 825 Downhole Seamless Control Line Tubing


Alloy 825 (UNS N08825) is an austenitic nickel-iron-chromium alloy with additions of molybdenum, copper and titanium. It was developed to provide exceptional corrosion resistance in both oxidizing and reducing environments. The alloy is resistant to chloride stress-corrosion cracking and pitting. The addition of titanium stabilizes Alloy 825 against sensitization in the as-welded condition making the alloy resistant to intergranular attack after exposure to temperatures in a range that would sensitize unstabilized stainless steels. The fabrication of Alloy 825 is typical of nickel-base alloys, with material being readily formable and weldable by a variety of techniques.


Mechanical Properties

Temper

Annealed

Tensile   Rm

85

ksi (min)

Tensile   Rm

590

MPa (min)

R.p.   0.2% Yield

35

ksi (min)

R.p.   0.2% Yield

240

MPa (min)

Elongation   (2” or 4D gl)

30

% (min)


Physical Properties (Room Temperature)

Specific   Heat (0-100°C)

440

J.kg-1.°K-1

Thermal   Conductivity

11.1

W.m -1.°K-1

Thermal   Expansion

14

mm/m/°C

Modulus   Elasticity

196

GPa

Electrical   Resistivity

1.13

μohm/cm

Density

8.13

g/cm3

 

Chemical Composition (% by weight)

Element

Min

Max

C

-

0.05

Si

-

0.5

Mn

-

1

P

-

0.03

S

-

0.03

Al

-

0.2

Cr

19.5

23.5

Cu

1.5

3

Fe

Balance

Mo

2.5

3.5

N

0.15

0.25

Ni

38

46

Ti

0.60

1.20

 

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