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ASTM B444 Inconel Alloy 625 Seamless Pipe and Tubing
Inconel 625 is a corrosion and oxidation resistant nickel alloy for its high strength and excellent water-based corrosion resistance. Its excellent strength and toughness are due to the addition of niobium, which together with molybdenum hardens the matrix of the alloy.
Inconel 625 is a kind of alloy with density of 8.4 g / cm3, melting point of 1290-1350 ℃, excellent resistance to inorganic acid corrosion, and excellent corrosion resistance to various corrosive media in oxidation and reduction environment.
625 alloy shows excellent corrosion resistance in many media. It has excellent resistance to pitting corrosion, crevice corrosion, intergranular corrosion and erosion in chloride medium.
Application:
- High temperature process
- Chemical and Petrochemical field
- Food field
- Power plants
Material List:
Incoloy 800, Incoloy 800H, Incoloy 825, Inconel 600, Hastelloy B, Hastelloy B2, Hastelloy C, Hastelloy C276,
Hastelloy C4, Hastelloy C22, Inconel 625, Inconel 718, Monel 400, Nickel 200
Equivalent Grade
| GB/T | UNS | NB/T47047 | JIS | W.Nr |
| GH3625 | N06625 | NS3306 | NCF625 | 2.4856 |
Chemistry
| Cr | Mo | Co | Nb+Ta | Al | Ti | C | Fe | Mn | Si | P | S | Ni | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Min | 20 | 8 | -- | 3.15 | -- | -- | -- | -- | -- | -- | -- | -- | Balance |
| Max | 23 | 10 | 1 | 4.15 | .4 | .4 | .1 | 5 | .5 | .5 | .015 | .015 | Balance |
ASTM (American Society for Testing and Materials) for various products made
| Tube Welded | Sheet/Plate | Bar | Forging | Fitting | Wire | |||
|---|---|---|---|---|---|---|---|---|
| B444 | B705 | B444 | B704 | B443 | B446 | – | – | – |
ASTM B444 Standard Specification for Nickel-Chromium-Molybdenum-Columbium Alloys
(UNS N06625 and UNS N06852) and Nickel-Chromium-Molybdenum-Silicon Alloy(UNS N06219)Pipe and Tube
Referenced ASTM Standard:
E829 Specification for general requirements for Nickel and Nickel
alloy seamless pipe and tube.
E112 Test Methods for determining the average grain size.
G28 Test methods for detecting susceptibility to intergranular
corrosion in wrought, Nickel-Rich, Chromium-Bearing Alloys.
G48 Test methods for piting and crevice corrosion resistance of
stainless steel and related alloys by use of ferric chloride
solution.
Keywords: Seamless pipe; seamless tube; N06219; N06625
