Incoloy 801 & 802
Incoloy 801: UNS Designation N08801, also known as “Alloy 801”; Incoloy 802: UNS Designation N08802, “Alloy 802”. Very similar to Incoloy 800, both Incoloy 801 and Incoloy 802 are iron-nickel-chromium alloys. Incoloy 801 has increased titanium additions raising the tensile and rupture strength dramatically and it has exceptional resistance to polythionic acid cracking. Incoloy 802 offers competitive high-temperature strength capabilities because of its high carbon level and has been used extensively in sinter deck plate applications for handling abrasive, high-temperature environments. Metals-Piping mainly supplies Incoloy 801 & 802 in the form of wire.
Incoloy 802 wires, UNS N08802.
1. Chemical Composition Requirements
The Chemical Composition | Incoloy 801, % | Incoloy 802, % |
Nickel | ≥32 | ≥32 |
Chromium | ≥20.5 | ≥21 |
Iron | Balance | Balance |
Carbon | ≤0.05 | ≤0.35 |
Aluminum | - | ≥0.60 |
Titanium | ≥1.10 | ≥0.70 |
Copper | ≥0.15 | - |
2. Physical Properties of Incoloy 801 & 802
Density | Melting Range | Specific Heat | Elastic Modulus |
g/cm3 | °C | J/kg. k | Gpa |
8.0 | 1372-1400 | 485 | 200 |
3. Mechanical Properties of Incoloy 801 & 802
Tensile Strength, min. | Yield Strength, min. | Elongation, min. | Reduction in Area, min. |
Mpa | Mpa | % | % |
1160 | 1035 | 15 | 53 |
*Incoloy 801 and Incoloy 802 wires should be furnished in the conditions of oil quenched, fine grained and tempered at 426°C.
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