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| PRODUCT DATA of Incoloy 800 |
| Material | Incoloy 800 |
| Product Datasheet | Incoloy alloy 800 |
| General Information | A nickel-iron-chromium alloy with good strength and excellent resistance to oxidation and carburization in high-temperature atmospheres. It also resists corrosion by many aqueous environments. The alloy maintains a stable, austenitic structure during prolonged exposure to high temperatures It is an austenitic, solid-solution alloy. Titanium nitrides, titanium carbides, and chromium carbides normally appear in the alloy’s microstructure. Like many austenitic stainless steels, the alloy can be sensitized, or made susceptible to intergranular attack in some aggressive media, by exposure to the temperature range of 540–760°C. |
| Precautions | Data from Manufacturer datasheet |
| Product Type | Annealed 980°C/15 min. |
| Chemical Composition | Fe-33Ni-20Cr-1Al+Ti |
| Name of Manufacturer | Special Metals Wiggin Ltd
Hereford, England +44 (0)1432 382200 +44 (0)1432 264030 info@specialmetalswiggin.co.uk |
| EXPERIENCE IN PRACTICE |
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| Development Status | Commercial Product |
| Lot Reproducibility | Good |
| Equivalent Designations | UNS N08800; 1.4876; AFNOR Z5 NC 35-20 |
| PHYSICAL PROPERTIES |
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| Specific Gravity | 7.94 |
| Curie Temperature | -115 °C |
| ELASTIC PROPERTIES |
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| Tensile Modulus | 197 GPa |
| Shear Modulus | 73.4 GPa |
| Poisson Ratio | 0.339 |
| ELECTRICAL PROPERTIES |
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| Electrical Volume Resistivity | 9.89e-7 ohm.m |
| THERMAL PROPERTIES |
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| Thermal Conductivity | 11.5 W/m.K |
| Thermal Expansion Coefficient | 14.4 μstrain/°C |
| Melting Range | 1360 to 1390 °C |
| Specific Heat | 0.46 J/g.K |
| RELEVANT PROPERTIES FOR USE IN SPACE COMMUNITY |
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| General Corrosion Status | No specific corrosion protection required |
| Stress Corrosion Status | High Resistance to SCC: Table 1 Data Quality: Design Data |
| Bimetallic Corrosion | Can be connected without any restriction to: 400 series Stainless steel
Can be connected in a non-controlled environment to the above and 300 series stainless steel, Ti and Ti-alloys, Cr, Cu, brasses, Cu-Ni, Al-bronzes, Si-bronzes, Can be connected in a clean room environment to above and Ag, SnPb alloys, Sn, Pb, low C steel, Al-Cu alloys, Cd, Au Needs specific measures: All others Test:ECSS-Q-ST-70C Rev.1 Table 5.1 Data Quality: Design Data |
| Machinability | standard procedures |
| Welding | Good weldability by all welding processes. Material to be welded must be thoroughly clean, and the proper joint designs must be used. |