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INCOLOY alloy 945 is a high-strength, corrosion-resistant alloy whose properties are enhanced by the presence of aluminum, titanium, niobium, copper and molybdenum in its composition. The alloy’s nickel content provides resistance to chloride-induced stress corrosion cracking. Molybdenum also imparts resistance to localized attacks such as crevice corrosion and pitting.
Chemical Composition
| Element | Content (%) |
|---|---|
| Nickel, Ni | 45-55 |
| Chromium, Cr | 19.5-23 |
| Molybdenum, Mo | 3-4 |
| Niobium, Nb | 2.5-4.5 |
| Copper, Cu | 1.5-3 |
| Manganese, Mn | 1 |
| Silicon, Si | 0.5 |
| Titanium, Ti | 0.5-2.5 |
| Sulfur, S | 0.03 |
| Phosphorus, P | 0.03 |
| Aluminum, Al | 0.01-0.7 |
| Carbon, C | 0.005-0.04 |
| Iron, Fe | Balance |
Physical Properties
| Properties | Metric | Imperial |
|---|---|---|
| Density | 8.2 g/cm3 | 0.296 lb/in3 |
| Melting point | 1270-1377°C | 2317-2510°F |
Thermal Properties
| Properties | Metric | Imperial |
|---|---|---|
| Thermal expansion co-efficient (@93°C/200°F) | 14.19 µm/m°C | 7.88 µin/in°F |
| Thermal conductivity (23°C/73°F) | 10.9 W/mK | 75.9 BTU.in/hrft².°F |