Alloy 800H / Incoloy 800H is a controlled composition derivative of INCOLOY® alloy 800 (UNS N08800). Applications have extended from petrochemical processing reformer tubing, to bellows and flare tips in refinery service.
| Tensile strength: | 54.00–77.00 |
| Yield strength: | 13.00–21.00 |
| Elongation: | 13.00–23.00% |
39.50% min
30.00-35.00%
19.00-23.00%
1.50% max
1.00% max
0.75% max
0.30-1.20%
0.15-0.60%
0.15-0.60%
0.05-0.10%
0.01% max
Alloy 800HT / Incoloy 800HT is a controlled composition derivative of INCOLOY® alloy 800H (UNS N08810) and is used for the same creep resistant applications, however the combined effects of mechanical and thermal processing of the alloy permit higher design stresses to be incorporated than are permitted for the conventional alloy.
| Tensile strength: | 54.00–77.00 |
| Yield strength: | 13.00–21.00 |
| Elongation: | 18.00–23.00% |
39.50% min
30.00-35.00%
19.00-23.00%
1.50% max
1.00% max
0.85-1.20%
0.75% max
0.06-0.10%
0.25-0.60%
0.25-0.60%
0.01% max
| Product form | Size range from | Size range to |
| Alloy 800H pipe | 0.5 in | 8 in |
| Alloy 800H tube | 12 mm | 260 mm |
| Alloy 800H pipe fittings | 0.5 in | 8 in |
| Alloy 800H flanges | 0.5 in | 8 in |
INCOLOY 800H is a controlled composition derivative of INCOLOY® alloy 800 (UNS N08800). Applications have extended from petrochemical processing reformer tubing, to bellows and flare tips in refinery service. Power generation, superheater and reheater tubing have also employed the material. Heat treatment retorts, muffles jigs and fixtures have also used this material to great effect.
To learn more about our stock of Alloy 800H pipe and tube contact us, or fill in our online quote request form and one of our team will get back to you.
| DENSITY | 7.94 g/cm³ | 0.287 lb/in³ |
| MELTING POINT | 1357-1385°C | 2475-2525°F |
The combined effects of mechanical and thermal processing of Incoloy Alloy 800HT permit higher design stresses to be incorporated than are permitted for the conventional Alloy 800H. Both materials remain available, subject to commercial considerations, and certain specifications which restrict the service temperature of some grades of INCOLOY® alloy 800H. Incoloy Alloy 800HT applications have extended from petrochemical processing reformer tubing, to bellows and flare tips in refinery service. In power generation, superheater and reheater tubing has also employed the material.
Heat treatment retorts, muffles jigs and fixtures have also used this material to great effect.
To learn more about our stock of Alloy 800HT pipe and tube contact us, or fill in our online quote request form and one of our team will get back to you.
| DENSITY | 7.94 g/cm³ | 0.287 lb/in³ |
| MELTING POINT | 1357-1385°C | 2475-2525°F |
| h Property | 21°C | 537.8°C | 649°C | 760°C | 871°C | 982°C |
| Ultimate Tensile Strength /MPa | 530.9 | 437.8 | 384 | 222.7 | 128.2 | 70.3 |
| 0.2% Yield Strength /MPa | 199.9 | 113.8 | 102 | 99.3 | 80 | 61.4 |
| Elongation % | 52 | 51 | 50 | 78 | 120 | 120 |
| Minimum Creep 0.0001% per hr | - | - | - | 41.4 | 24.8 | 7.2 |
| 10,000 hr Rupture Strength | - | - | - | 50.3 | 24.1 | 8.3 |
| Coefficient of Thermal Expansion /µm/m°C | - | - | - | 17.8 | 18.4 | - |
| Thermal Conductivity /kcal/(hr.m.°C) | 10 | - | - | 20.5 | 22.5 | 26.5 |
| Modulus of Elasticity / GPa | 1.97 | - | - | 1.45 | 1.32 | - |
| HT PROPERTY | ||||||
| Ultimate Tensile Strength /ksi | 54.00-77.00 | |||||
| 0.2% Yield Strength /ksi | 13.00-21.00 | |||||
| Elongation % | 18.00-23.00 |
| UNS Number | N08810 |
| WNR Number | 1.4958 |
| Standards | ASTM B 409, B 408, B 407, B 564 |
| UNS Number | N08811 |
| WNR Number | 1.4876/1.4959 |
| Standards | ASTM B 409, B 408, B 407, B 564 |
| WELDING ELECTRODES | INCOWELD A |
| FILLERS |
82 |
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