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| Quantity: | |
|---|---|
The grade 800 is efficiently used below 590°C. For usage above 590°C, alloy 800H and alloy 800HT are used. These grades show exceptional creep resistance properties without failing even after long exposure to high temperature. These grades are also used in the sigma phase temperature range since they effectively resist embrittlement due to their composition and the titanium content stabilizes the carbides. The presence of aluminium in grade 800HT might be used to form intermetallic compounds during precipitation, this would subsequently increase the strength of the metal. Aluminium also helps in improving oxidation resistance.
Ni | C | Cr | Mn | Si | Cu | AI | S | C | Fe | Ti |
30-35 | 0.06-0.1 | 19-23 | ≤1.5 | ≤1.0 | ≤0.75 | 0.15-0.6 | ≤0.015 | ≤0.01 | ≥39.5 | 0.15-0.6 |
tensile strength( Mpa) | 0.2% yield strength ( Mpa) | Elongation A5(%) |
≥450 | ≥170 | ≥30 |
The grade 800 is efficiently used below 590°C. For usage above 590°C, alloy 800H and alloy 800HT are used. These grades show exceptional creep resistance properties without failing even after long exposure to high temperature. These grades are also used in the sigma phase temperature range since they effectively resist embrittlement due to their composition and the titanium content stabilizes the carbides. The presence of aluminium in grade 800HT might be used to form intermetallic compounds during precipitation, this would subsequently increase the strength of the metal. Aluminium also helps in improving oxidation resistance.
Ni | C | Cr | Mn | Si | Cu | AI | S | C | Fe | Ti |
30-35 | 0.06-0.1 | 19-23 | ≤1.5 | ≤1.0 | ≤0.75 | 0.15-0.6 | ≤0.015 | ≤0.01 | ≥39.5 | 0.15-0.6 |
tensile strength( Mpa) | 0.2% yield strength ( Mpa) | Elongation A5(%) |
≥450 | ≥170 | ≥30 |
