ASTM B444 Seamless Pipe is a nickel-based super alloy that offers properties of high strength and resistance to elevated temperatures. It also demonstrates remarkable protection against oxidation and corrosion. ASTM B444 grade 1 has the ability to high stress and a wide range of temperatures, both in and out of water, as well as being able to resist corrosion while being exposed to highly acidic environments makes it a proper choice for marine and nuclear applications. B444 UNS N06625 is invented for the purpose of creating a material that could be useful for steam-line piping. Some changes were made to its original composition that has enabled it to be even more weldable and creep-resistant.
And due to this, the usage of ASTM B444 uns n06625 have expanded into a wide range of industries such as themarine and nuclear applications to make pumps and valves and other high pressure equipment and the chemical processing industry.There is a concern about ASTM B444 pipeweldability because of its high Niobium levels as well as its exposure to high temperatures and harsh environments. ASME SB 444 was found to be an ideal choice for welding.
ASTM B444 is used as wire rope for mooring cables, submarine auxiliary propulsion motors, propeller blades for motor patrol gunboats, submarine quick disconnect fittings, sheathing for undersea communication cables, submarine transducer controls, exhaust ducts for Navy utility boats, and steam-line bellows. Potential applications of ASTM B444 Inconel 625 are bellows, springs, seals, for submerged controls, flexure devices, electrical cable connectors, fasteners, and oceanographic equipment components.
Table of Content
Size | 6.00 mm OD up to 914.4 mm OD |
Thickness | 0.3mm – 50 mm, SCH 5, SCH10, SCH 40, SCH 80, SCH 80S, SCH 160, SCH XXS |
Length | Within 13500mm |
Type | Welded Pipes, Welded Tubes |
Elements | Composition Limits, % |
---|---|
Inconel 625 | |
Nickel | 58.0 min |
Chromium |
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Columbium + Titanium |
|
Carbon | 0.10 max |
Manganese | 0.50 max |
Silicon | 0.50 max |
Phosphorous | 0.015 max |
Sulfur | 0.015 max |
Cobalt (if determined) | 1.0 max |
Iron | 5.0 max |
Aluminum | 0.40 max |
Titanium | 0.40 max |
Condition | Tensile Strength min, ksi (MPa) | Yield Strength (0.2 % offset), min, ksi (MPa) | Elongation in 2 inches or 50.8mm (or 4D)), min % |
---|---|---|---|
Inconel 625 :
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Specified Outside Diameter, inches (mm) | Permissible Variation | |||||
---|---|---|---|---|---|---|
Outside Diameter inches (mm) | Inside Diameter | Wall Thickness | ||||
+ | - | + | - | + | - | |
Under 3/32 (2.4) | 0.002(0.05) | 0 | 0 | 0.002(0.05) | 10 | 10 |
3/32 (2.4) to 3/16 (4.8), excl | 0.003(0.08) | 0 | 0 | 0.003(0.08) | 10 | 10 |
3/16 (4.8) to 1/2 (12.7), excl | 0.004(0.10) | 0 | 0 | 0.004(0.10) | 10 | 10 |
1/2 (12.7) to 1 1/4(31.8), incl | 0.005(0.13) | 0 | 0 | 0.005(0.13) | 10 | 10 |
Length , ft (m) | Tube Size , inches (mm) | PermissibleVariation, inches (mm) | |
---|---|---|---|
Over | Under | ||
Under 1 (0.30) | up to 1.250(31.8), incl | 1/32 (0.8) | 0 (0) |
1 (0.30) to 4 (1.22), incl | up to 1.250(31.8), incl | 1/16 (1.6) | 0 (0) |
Over 4 (1.22) to 10 (3.0), incl | up to 1.250(31.8), incl | 3/32 (2.4) | 0 (0) |
Over 10 (3.0) | up to 1.250(31.8), incl | 3/16 (4.8) | 0 (0) |
NB Sizes | Sch 5 | Sch 10 | Sch 40 | Sch 80 | Sch 160 |
---|---|---|---|---|---|
1/8″ | ✔ | ✔ | ✔ | ✔ | |
1/4″ | ✔ | ✔ | ✔ | ✔ | |
3/8″ | ✔ | ✔ | ✔ | ✔ | |
1/2″ | ✔ | ✔ | ✔ | ✔ | ✔ |
3/4″ | ✔ | ✔ | ✔ | ✔ | ✔ |
1″ | ✔ | ✔ | ✔ | ✔ | ✔ |
1 1/4″ | ✔ | ✔ | ✔ | ✔ | ✔ |
1 1/2″ | ✔ | ✔ | ✔ | ✔ | ✔ |
2″ | ✔ | ✔ | ✔ | ✔ | ✔ |
2 1/2″ | ✔ | ✔ | ✔ | ✔ | ✔ |
3″ | ✔ | ✔ | ✔ | ✔ | ✔ |
3″ | ✔ | ✔ | ✔ | ✔ | ✔ |
4″ | ✔ | ✔ | ✔ | ✔ | ✔ |
5″ | ✔ | ✔ | ✔ | ✔ | |
6″ | ✔ | ✔ | ✔ | ✔ |
Dammam -KSA, Indonesia, Belgium, Philippines | 1" Sch. 80S Seamless ASTM B444 UNS N06625 Grade 2 |
Qatar, France, Thailand, Europe | 26.7mm x 5.56mm Sch 160 UNS N06625 |
Czechia, Germany, Malaysia, Thailand | 25NB Alloy 625 pipe SCH.40 |
Malaysia, USA, Finland, Bangladesh | Schedule 5 alloy 625 seamless pipe |
South Africa, Saudi Arabia (KSA), Brazil, Kuwait | ASTM B444 UNS NO6625 GRADE 1, AMS 5581 |
Singapore, South Africa, Bahrain | SCH 80 GRADE 1 UNS N06625 hydrostatic pipe |
Philippines, Australia, Nigeria, UK | SCH 10 ASTM B444 UNS N06625 Pipe |
Oman, Malaysia,Hong Kong | ASTM B444 Gr.625 Hot Finished Pipes |
Chile, Italy, Singapore, Iran | ASTM B444 Inconel 625 Schedule 160 Pipes |
United Arab Emirates (UAE), Turkey, Norway | 2 1/2" Schedule 160 Inconel 625 Pipe |
Netherlands, Malaysia, Russia | 3 mm ASTM B444 Nickel Alloy 625 Pipe Cladded |
Egypt, Spain, UK, Mexico, Singapore | 2" Inconel 625 pipe, SCH 80 |