Incoloy® 825
Incoloy 825 is a titanium-stabilized fully austenitic nickel-iron-chromium alloy with additions of copper and molybdenum. It is specifically engineered to provide exceptional resistance to aggressive corrosive environments where Alloy 800 performs poorly.
- Общие формы: Pipe, Tube, Plate, Round Bar, Flanges, Fittings.
- Ключевая особенность: Superior resistance to Sulfuric and Phosphoric acids.
- Stress Corrosion: Virtually immune to chloride-ion stress-corrosion cracking.
- Стандарт: ASTM B423 (Pipe), B424 (Plate), B425 (Bar).
The chemical composition of Incoloy 825 is balanced to provide resistance to a variety of corrosive conditions. The combination of Nickel, Molybdenum, and Copper allows it to withstand reducing environments such as those containing sulfuric and phosphoric acids.
Устойчивость к кислотам
Excellent resistance to sulfuric and phosphoric acids, making it the standard choice for heating coils, tanks, and crates in chemical processing.
Коррозионное растрескивание под напряжением
The high nickel content provides superb resistance to chloride-ion stress-corrosion cracking, a common failure mode in stainless steels like 316L.
Intergranular Attack
Stabilized with Titanium to prevent sensitization during welding. This ensures the material remains resistant to intergranular corrosion after fabrication.
| Элемент | Содержание (%) |
|---|---|
| Никель (Ni) | 38.0 - 46.0 |
| Железо (Fe) | 22.0 min (Balance) |
| Хром (Cr) | 19.5 - 23.5 |
| Молибден (Mo) | 2.5 - 3.5 |
| Медь (Cu) | 1.5 - 3.0 |
| Титан (Ti) | 0.6 - 1.2 |
| Углерод (C) | 0,05 макс. |
| Форма продукта | Стандарты ASTM / ASME |
|---|---|
| Трубы и трубки (бесшовные) | ASTM B423, ASME SB423 |
| Pipe & Tube (Welded) | ASTM B704, ASTM B705, ASME SB704 |
| Пластина, лист, полоса | ASTM B424, ASME SB424 |
| Бар и стержень | ASTM B425, ASME SB425 |
| Фитинги | ASTM B366, ASME SB366 |
| Поковки | ASTM B564, ASME SB564 |
| Недвижимость | Типичные значения (комнатная температура) |
|---|---|
| Прочность на разрыв | 85 ksi (586 MPa) min |
| Предел текучести (смещение 0,2%) | 35 ksi (241 MPa) min |
| Удлинение | 30% min |
| Hardness | 135 - 165 HB |
Химическая обработка
Heat exchangers, evaporators, scrubbers, and piping handling sulfuric acid, phosphoric acid, and nitric acid.
Нефть и газ
Used in "sour gas" service (H2S environments) for downhole piping and wellhead components.
Контроль загрязнения окружающей среды
Components in flue gas desulfurization (FGD) systems where sulfur and acid condensate are present.
Pickling Operations
Heating coils, tanks, crates, and baskets used in steel pickling lines (Sulfuric Acid baths).
In Need of Incoloy 825 Materials?
We maintain a robust inventory of Incoloy 825 pipes, plates, and bars. Contact us for certifications (MTR) and competitive pricing.
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