SS 625 Control Line N06625 / Heat Treated Temperature Resistance Corrosion Resistance

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In oil and gas applications, control lines made from Alloy 625 are often used to deliver hydraulic control to subsea wells, transmit pressure signals, or supply chemicals in harsh downhole environments. The use of Alloy 625 ensures durability and corrosion resistance in extreme pressure, temperature, and corrosive conditions found in offshore drilling and subsea production.

Alloy 625 (also known by its UNS designation N06625) is a nickel-chromium-molybdenum alloy known for its high strength, excellent fabricability, and outstanding corrosion resistance. It is widely used in applications where high temperature and high pressure are factors, such as in marine, chemical, and aerospace industries.

Corrosion Resistance Of Different Materials（G28 A Methord)

Grade	Rate(mm/a)
N08825	≤ 0.9
N08020	≤ 0.5
N08367	≤ 0.5
N06625	≤ 0.9
N10276	≤ 10
N06200	≤ 1.5
N06022	≤ 1.0
N06600	≤ 1.0
N06601	≤ 1.0

SS 625 Control Line N06625 / Heat Treated Temperature Resistance Corrosion Resistance

Chemical Composition

C	Sl	Mn	P	S	Cr	Mo	Ti	Fe	Al	Ni	Co	Nb
≤	≤	≤	≤	≤
0.1	0.5	0.5	0.015	0.015	20-23	8-10	0.4	5	0.4	58	1	3.15-4.15

Mechanical Propertie

Property	Mln.	Max.
Tensile strength (psi)	120000	-
Yield strength (psi)	60000	-
Elongation (%)	30	-

Size Dependant Characteristics (Based Upon Nominal Tubing Dimensions)

Type	O.D.	W.T.	Maximum Theoretical Working Pressure	Minimum Theoretical Collapse Pressure	Nominal Theoretical Burst Pressure
Type	in.	in.	psi	psi	psi
Welded	1/4	0.035	12377	13000	29667
	1/4	0.049	18022	17107	41333
	1/4	0.065	25318	21198	55000
	1/4	0.083	34538	24861	70333
	3/8	0.035	8013	9125	19901
	3/8	0.049	11485	12262	27727
	3/8	0.065	15815	15611	36894
	3/8	0.083	21047	18953	47180
	1/2	0.035	5929	7024	14984
	1/2	0.049	8435	9530	20876
	1/2	0.065	11509	12282	27779
	1/2	0.083	15148	15133	35523
Seamless	1/4	0.035	12377	13000	29667
	1/4	0.049	18022	17107	41333
	1/4	0.065	25318	21198	55000
	1/4	0.083	34538	24861	70333
	3/8	0.035	8013	9125	19901
	3/8	0.049	11485	12262	27727
	3/8	0.065	15815	15611	36894
	3/8	0.083	21047	18953	47180
	1/2	0.035	5929	7024	14984
	1/2	0.049	8435	9530	20876
	1/2	0.065	11509	12282	27779
	1/2	0.083	15148	15133	35523

Encapsulated lines have become ubiquitous in oil field downhole systems. Encapsulated

material offers a number of advantages that help to guarantee successful fulfilment of the task.

1. The encapsulation makes a protective barrier that keeps the line from being scratched, pitted

and squashed as it operates.

2. The encapsulation offers a integration that will help minimize the amount of equipment and

personnel required to deploy multiple single components.

3. The encapsulation avoids metal-to-metal contact.

4. The encapsulation protects the undersurface components within the bore, for instance,

lines that might be exposed to high concentrations of liquid

APPLICATION

Key Properties:

Corrosion Resistance: Exceptional resistance to a wide range of corrosive environments, especially in harsh settings involving seawater, acids, and high temperatures.

High Strength: The alloy has high tensile, creep, and rupture strength, often due to the presence of molybdenum and niobium.

Temperature Resistance: Can withstand high temperatures (up to 980°C or 1796°F) without losing mechanical properties.

Oxidation Resistance: Excellent oxidation resistance up to 1000°C (1832°F).

Fatigue Resistance: Known for its exceptional fatigue and thermal fatigue resistance, making it suitable for cyclic loads in high-temperature environments.

SS 625 Control Line N06625 / Heat Treated Temperature Resistance Corrosion Resistance