Inconel® 625
Inconel 625 is a nickel-chromium-molybdenum alloy containing niobium. This addition acts to stiffen the alloy matrix, providing high strength without a strengthening heat treatment. It is globally recognized for its phenomenal resistance to pitting, crevice corrosion, and high-temperature oxidation.
- Общие формы: Pipe, Fittings, Flanges, Sheet, Bar.
- Ключевая особенность: High strength + outstanding aqueous corrosion resistance.
- Коррозия: Immune to chloride-ion stress-corrosion cracking.
- Temperature: Service range from cryogenic to 1800°F (982°C).
Inconel 625 is one of the most versatile materials available. It solves the dual problem of requiring high mechanical strength and resistance to severe corrosive environments. Whether in sub-zero marine environments or high-temperature jet engine exhausts, 625 performs reliably.
Pitting Resistance
The high Molybdenum (9%) content provides exceptional resistance to localized attack (pitting and crevice corrosion) in seawater and chemical salts.
Высокая прочность
The "Solid Solution Strengthening" effect of Niobium and Molybdenum gives it tensile strength significantly higher than Inconel 600, without needing precipitation hardening.
Fabricability
Despite its strength, it possesses good ductility and weldability, making it easier to fabricate into complex plant equipment compared to other superalloys.
| Элемент | Содержание (%) |
|---|---|
| Никель (Ni) | 58.0 min (Balance) |
| Хром (Cr) | 20.0 - 23.0 |
| Молибден (Mo) | 8.0 - 10.0 |
| Ниобий (Nb) + Ta | 3.15 - 4.15 |
| Железо (Fe) | 5.0 макс. |
| Марганец (Mn) | 0.50 max |
| Углерод (C) | 0.10 макс. |
*Note: The combination of Mo and Nb is what gives Alloy 625 its unique properties.
| Форма продукта | Стандарты ASTM / ASME |
|---|---|
| Трубы и трубки (бесшовные) | ASTM B444, ASME SB444 |
| Труба (сварная) | ASTM B705, ASME SB705 |
| Пластина, лист, полоса | ASTM B443, ASME SB443 |
| Бар и стержень | ASTM B446, ASME SB446 |
| Фитинги | ASTM B366, ASME SB366 |
| Поковки | ASTM B564, ASME SB564 |
| Недвижимость | Типичные значения (комнатная температура) |
|---|---|
| Прочность на разрыв | 120 - 150 ksi (827 - 1034 MPa) |
| Предел текучести (смещение 0,2%) | 60 - 95 ksi (414 - 655 MPa) |
| Удлинение | 30 - 60 % |
| Твердость (Бринелль) | 175 - 240 HB |
*Note: Significantly stronger than Inconel 600 or 601 in the annealed condition.
Морская техника
Propeller blades, submarine propulsion motors, exhaust ducts, and sheathing for undersea cables.
Контроль загрязнения окружающей среды
Scrubbers, stack gas reheaters, and dampers in flue gas desulfurization (FGD) systems.
Аэрокосмическая промышленность
Ducting systems, engine exhaust systems, fuel and hydraulic line tubing, and turbine shroud rings.
Химическая обработка
Equipment handling superphosphoric acid, hydrofluoric acid, and sour gas.
Need Inconel 625 Fittings or Flanges?
We stock a comprehensive range of Inconel 625 seamless pipe, welded pipe, and flanges. Contact our sales team for immediate assistance.
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