Cast supealoyCobalt based alloyPrecision alloySUPER ALLOY
Refractory metal
Titanium & Zirconium alloy
Sputtering taget
Inconel625
Commercialgrade: Inconel625 nickel-based superalloy
US grade: UNS N06625
Chinese grade: GH3625/GH625
French grade: NC22DNb
German grade: W.Nr.2.4856
I. Overview of Inconel625(NO6625) Superalloy:
Inconel625 is a solid solution strengthenednickel-based deformed superalloy with molybdenum and niobium as the mainstrengthening elements. It has excellent corrosion resistance and highoxidation performance, and has good tensile properties and fatigue propertiesfrom cryogenic temperature to 980 ° C, and has stress corrosion resistance in asalt spray atmosphere. Therefore, it can be widely used in the manufacture ofaero-engine parts, aerospace structural parts and chemical equipment. The alloyhas good processing and welding performance. Huacheng Jinyan can supply in formof plates, rods, tubes, wires, strips and forgings.
Chemical composition: see table 1-1:
Table 1-1 %
C≤ | Si≤ | Mn≤ | P≤ | S≤ | Cr≥ | Ni≥ | Mo≥ | Cu≤ |
0.1 | 0.5 | 0.5 | 0.015 | 0.015 | 20.0-23.0 | Balance | - | 0.07 |
Other | N≤ | Al≤ | Ti≤ | Fe≤ | Co≤ | V≤ | W≤ | Nb≤ |
- | 0.4 | 0.4 | 5 | 1 | - | - | 3.15-4.15 |
II. Physical and chemicalproperties:
1. Thermal performance:
(1) Melting temperature range: 1290 ～ 1350℃ .
(2) Thermal conductivity: see Table 2-1.
(3) Specific heat capacity: See Table 2-2.
(4) Coefficient of linear expansion: see Table2-3;
2. Density: ρ = 8.44g / cm3.
3. Magnetic properties: non-magnetic.
4. Chemical properties:
(1) Anti-oxidation performance: The alloy hasexcellent high-temperature oxidation resistance. The weight change of the alloyafter cyclic oxidation in air at high temperature is shown in Table 2-1.
Table 2-1
Cycle oxidation time / h | 100 | 200 | 300 | 400 | 500 | 600 | 700 | 800 | |
weight | 980 ℃ | 0.086 | 0.065 | 0.065 | 0.048 | 0.021 | - | 0.03 | -0.081 |
Variety/% | 1095 ℃ | -0.182 | -1.086 | -3.335 | -5.399 | -6.566 | -10.066 | - | - |
(2) Corrosion resistance: The alloy has goodresistance to seawater corrosion, see Table 2-2. The alloy is also resistant tovarious salt solutions. In addition, it has good resistance to the corrosion ofnitric acid and phosphoric acid. It also has considerable resistance to thecorrosion of hydrochloric acid and low concentration of sulfuric acid heatedbelow the boiling point.
Table 2-2
Test days | Specimen type | Weight loss / g | Local corrosion | test Days | Specimen type | Weight loss / g | Local corrosion |
In still sea water | In flowing seawater (0.61m / s) | ||||||
180 | Smooth | 0.05 | no | 180 | Smooth | 0.04 | no |
Smooth | 0.05 | no | Smooth | 0.05 | no | ||
365 | Smooth | 0.02 | no | 365 | Smooth | 0.01 | no |
Smooth | 0.04 | no | Smooth | 0.02 | no | ||
Note: The smooth specimen refers to the flatspecimen of 6.4mm × 100mm × 300mm with circular welds, which is annealed at 980℃before welding. The specimen with a gap means that a 32 mm fiber washer isbolted to the center of the plate surface.
III. Specifications and Ex-factorystatus
1. Classification: Huacheng Jinyan can supplyin form of seamless pipes, steel plates, round steel, forgings, flanges, rings,welded pipes, steel strips, wire and supporting welding materials.
2. Ex-factory status: Seamless Tube: solidsolution + acid white, length can be fixed; Plate: solid solution, pickling,trimming; Welded Tube: solid solution acid white + RT% flaw detection; Forging:annealing + turning; the bar is delivered in the state of forging, surfacepolishing or lapping; the strip is delivered after cold rolling, solid solutionsoftening, and descaling; the wire is solid-dissolved and pickled in a disc orstraight strip, solid solution straight polished.
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