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.
- الأشكال الشائعة: Pipe, Tube, Plate, Round Bar, Flanges, Fittings.
- الميزة الرئيسية: Superior resistance to Sulfuric and Phosphoric acids.
- Stress Corrosion: Virtually immune to chloride-ion stress-corrosion cracking.
- Standard: 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.
مقاومة الأحماض
Excellent resistance to sulfuric and phosphoric acids, making it the standard choice for heating coils, tanks, and crates in chemical processing.
التشقق الناتج عن التآكل الإجهادي
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.
| العنصر | المحتوى (%) |
|---|---|
| النيكل (ني) | 38.0 - 46.0 |
| الحديد (Fe) | 22.0 min (Balance) |
| الكروم (Cr) | 19.5 - 23.5 |
| الموليبدينوم (Mo) | 2.5 - 3.5 |
| النحاس (النحاس) | 1.5 - 3.0 |
| التيتانيوم (Ti) | 0.6 - 1.2 |
| الكربون (C) | 0.05 كحد أقصى |
| نموذج المنتج | معايير ASTM / ASME |
|---|---|
| الأنابيب والأنابيب (غير الملحومة) | ASTM B423, ASME SB423 |
| Pipe & Tube (Welded) | ASTM B704, ASTM B705, ASME SB704 |
| لوحة، ورقة، شريط، شريط | ASTM B424, ASME SB424 |
| بار وقضيب | ASTM B425, ASME SB425 |
| التركيبات | astm B366، ASM SB366 |
| المطروقات | astm B564، ASM SB564 |
| الممتلكات | القيم النموذجية (درجة حرارة الغرفة) |
|---|---|
| قوة الشد | 85 ksi (586 MPa) min |
| قوة الخضوع (إزاحة 0.2%) | 35 ksi (241 MPa) min |
| الاستطالة | 30% min |
| الصلابة | 135 - 165 HB |
المعالجة الكيميائية
Heat exchangers, evaporators, scrubbers, and piping handling sulfuric acid, phosphoric acid, and nitric acid.
النفط والغاز
Used in "sour gas" service (H2S environments) for downhole piping and wellhead components.
مكافحة التلوث
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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