ASTM B444 INCONEL 625, ASME SB444 UNS N06625 Nickel Alloy Seamless Tubing,Inconel 625 Seamless Tubes
ASTM/ASME B444 UNS N06625 Nickel Alloy Seamless Tubes are manufactured from Nickel-Chromium-Molybdenum alloy 625 (Inconel® 625), offering outstanding resistance to corrosion, oxidation, and high-temperature stress. These tubes are widely used in aerospace, chemical processing, marine, nuclear, oil & gas, and power generation industries where extreme operating conditions demand superior material performance.
We are the ASME SB444 UNS N06625 Nickel Alloy Seamless Pipe&ASTM B444 UNS N06625 Nickel Alloy Seamless tubes manufacturer and exporter in China.
Alloy 625,UNS N06625 is a nickel-chromium alloy used for its high strength, excellent fabricability and outstanding corrosion resistance. Service temperatures can range from cryogenic to 980°C (1800°F). Alloy 625,UNS N06625 strength is derived from the solid solution strengthening effect of molybdenium and niobium on its nickel-chromium matrix.
Thus precipitation-hardening treatments are not required. This combination of elements also is responsible for superior resistance to a wide range of corrosive environments of unusual severity as well as to high-temperature effects such as oxidation and carburization.
Product Specifications
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Standard: ASTM B444 / ASME SB444
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Material Grade: UNS N06625 (Nickel Alloy 625)
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Product Form: Seamless Tube
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Manufacturing Process: Hot Extruded / Cold Drawn
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Condition: Annealed / Solution Annealed
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Testing: Eddy Current Test, Hydrostatic Test, PMI, Mechanical & Chemical Testing
Size Range
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Outside Diameter (OD):
6.35 mm to 508 mm (¼” to 20”) -
Wall Thickness:
0.9 mm to 25.4 mm (as per schedule or customer requirement) -
Length:
Random, Double Random, Cut Length, or as specified
ASTM-ASME B444 UNS N06625 Nickel Alloy Seamless tube Pipes
astm-b444- 18
Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloys (UNS N06625 and UNS N06852) and Nickel-Chromium-Molybdenum-Silicon Alloy (UNS N06219) Pipe and Tube
Product size
OD：6~219mm
Wall thickness：1.0~15mm
Standard :ASTM B444 UNS N06625
ASTM B444 UNS N06625 168.3mm*7.11mm seamless tube
ASME B444 UNS N06625 219mm*7.11mm seamless tube
ASTM B444 ASME SB444 N06625 Nickel Alloy Seamless Tubing Tubes Pipes Inconel 625 Seamless Tubes Chemical composition
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Alloy
|
%
|
Ni
|
Cr
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Mo
|
Nb+N
|
Fe
|
Al
|
Ti
|
C
|
Mn
|
Si
|
Cu
|
P
|
S
|
Co
|
|
N06625
|
Min. |
58.0
|
20.0
|
8.0
|
3.15
|
||||||||||
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Max.
|
23.0
|
10.0
|
4.15
|
5.0
|
0.40
|
0.40
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0.10
|
0.50
|
0.50
|
0.5
|
0.015
|
0.015
|
1.0
|
ASTM B444 ASME SB444 N06625 Nickel Alloy Seamless Tubing Tubes Pipes Inconel 625 Seamless Tubes Physical properties
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Density / Specific Gravity
|
8.44 kg/m³
|
|
Melting point
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1290-1350℃
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Inconel 625 Alloy minimum mechanical properties in the room temperature
|
Alloy
|
Tensile strength
min ksi (Mpa) |
Yield strength
R P0. 2 min ksi (Mpa) |
Elongation in 50.8mm
|
Brinell hardness
HB |
|
N06625 Annealed
|
120 (827)
|
60 (414)
|
30
|
≤220
|
|
N06625 Solution Annealed
|
100 (690)
|
40 ( 276)
|
30
|
≤220
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Chemial Composition
| Alloy 600 | Ni + Co | Cr | Fe | C | Mn | S | Si | Cu |
| 72.0 min | 14.0-17.0 | 6.0-10.0 | .15 max | 1.00 max | .015 max | .50 max | .50 max | |
| Alloy 601 | Ni | Cr | Al | C | Mn | Si | Fe | |
| 61.5 | 22.5 | 1.4 | 0.05 | 0.3 | 0.2 | 14 | ||
| Alloy 625 | Cr | Ni | Mo | Co + Nb | Ta | Al | Ti | C |
| 20.00-30.00 | Remainder | 8.0-10.0 | 1.0 max | 3.15-4.15 | .40 max | .40 max | .10 max | |
| Fe | Mn | Si | P | S | ||||
| 5.0 max | .50 max | .50 max | .015 max | .015 max |
Mechanical Properties
| Inconel 600 | Inconel 601 | Inconel 625 | Inconel 718 | |
| Density | 8.4 g/cm³ | 8.1g/cm³ | 8.4 g/cm³ | 8.2 g/cm³ |
| Melting Range,℃ | 1370-1425 ℃ | 1320-1370℃ | 1290-1350℃ | 1260-1340 ℃ |
| Elongation % | 30min. | 30 min. | 30 min. | 30 min. |
| Tensile strength – Mpa | 550min. | 650min. | 760min. | 965min |
| Yield strength – Mpa | 240min. | 300min. | 345min. | 550 min. |
| Brinell hardness (HB) | ≤195 | ≤220 | ≤220 | ≤363 |
Heat Treatment
ASTM B444 UNS N06625 seamless tubes are typically supplied in the solution annealed condition:
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Annealing Temperature: 1093°C to 1204°C (2000°F to 2200°F)
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Cooling Method: Rapid cooling or water quenching
This heat treatment ensures optimal corrosion resistance, uniform microstructure, and enhanced mechanical properties.
inquiry or order specification for our Astm B444 Uns N06625 Seamless Pipes
Astm B444 Uns N06625 Seamless Pipes
Material: Inconel 625 (UNS N06625)
Size: 4 Inch (DN100)
Wall thickness: SCH40，Single length:6000mm length
Why Choose ASTM B444 UNS N06625 Seamless Tubes?
Nickel Alloy 625 seamless tubes provide a unique combination of high mechanical strength, outstanding corrosion resistance, and excellent thermal stability, making them the preferred choice for critical and high-performance industrial applications.
