Superheated Steam Table — 80 bar (8 MPa)
Specific volume, internal energy, enthalpy, entropy, density and isobaric specific heat of superheated steam at 80 bar (8 MPa), computed from IAPWS-IF97 — the same formulation the SimuPipe solver uses. Rows run from the saturation temperature (295.01 °C) to 800 °C in 20 °C steps.
| T (°C) | v (m³/kg) | ρ (kg/m³) | u (kJ/kg) | h (kJ/kg) | s (kJ/kg·K) | cp (kJ/kg·K) |
|---|---|---|---|---|---|---|
| 295.01Sat. | 0.023528 | 42.5034 | 2570.4 | 2758.6 | 5.7448 | 5.8831 |
| 300 | 0.024280 | 41.1858 | 2592.1 | 2786.4 | 5.7935 | 5.2870 |
| 320 | 0.026843 | 37.2543 | 2663.6 | 2878.3 | 5.9514 | 4.0905 |
| 340 | 0.028995 | 34.4891 | 2721.9 | 2953.9 | 6.0766 | 3.5176 |
| 360 | 0.030915 | 32.3466 | 2773.3 | 3020.6 | 6.1837 | 3.1789 |
| 380 | 0.032685 | 30.5953 | 2820.3 | 3081.8 | 6.2789 | 2.9572 |
| 400 | 0.034348 | 29.1140 | 2864.5 | 3139.3 | 6.3657 | 2.8037 |
| 420 | 0.035931 | 27.8308 | 2906.8 | 3194.2 | 6.4461 | 2.6939 |
| 440 | 0.037454 | 26.6992 | 2947.6 | 3247.3 | 6.5215 | 2.6136 |
| 460 | 0.038929 | 25.6878 | 2987.5 | 3298.9 | 6.5929 | 2.5541 |
| 480 | 0.040365 | 24.7740 | 3026.6 | 3349.5 | 6.6611 | 2.5097 |
| 500 | 0.041769 | 23.9412 | 3065.2 | 3399.4 | 6.7264 | 2.4765 |
| 520 | 0.043147 | 23.1767 | 3103.5 | 3448.6 | 6.7893 | 2.4516 |
| 540 | 0.044502 | 22.4710 | 3141.5 | 3497.5 | 6.8501 | 2.4331 |
| 560 | 0.045838 | 21.8160 | 3179.3 | 3546.0 | 6.9091 | 2.4196 |
| 580 | 0.047157 | 21.2056 | 3217.0 | 3594.3 | 6.9663 | 2.4101 |
| 600 | 0.048463 | 20.6345 | 3254.7 | 3642.4 | 7.0221 | 2.4038 |
| 620 | 0.049755 | 20.0985 | 3292.4 | 3690.5 | 7.0765 | 2.4000 |
| 640 | 0.051036 | 19.5939 | 3330.1 | 3738.4 | 7.1296 | 2.3984 |
| 660 | 0.052308 | 19.1176 | 3367.9 | 3786.4 | 7.1816 | 2.3986 |
| 680 | 0.053570 | 18.6670 | 3405.8 | 3834.4 | 7.2325 | 2.4003 |
| 700 | 0.054825 | 18.2398 | 3443.8 | 3882.4 | 7.2823 | 2.4032 |
| 720 | 0.056073 | 17.8340 | 3481.9 | 3930.5 | 7.3313 | 2.4073 |
| 740 | 0.057314 | 17.4477 | 3520.2 | 3978.7 | 7.3793 | 2.4123 |
| 760 | 0.058550 | 17.0795 | 3558.6 | 4027.0 | 7.4265 | 2.4182 |
| 780 | 0.059780 | 16.7280 | 3597.2 | 4075.5 | 7.4729 | 2.4249 |
| 800 | 0.061005 | 16.3920 | 3636.0 | 4124.0 | 7.5186 | 2.4322 |
u is not tabulated independently. Specific internal energy follows from the enthalpy and specific volume as u = h − p·v, with p in MPa and v in m³/kg (1 MPa·m³/kg = 1000 kJ/kg). At 80 bar (8 MPa) that pressure term is worth 488.0 kJ/kg at 800 °C, so u and h are far apart at high pressure and nearly equal at low pressure — a common source of error when the wrong column is read.
The first row is saturated vapour, at 295.01 °C. Below that temperature at 80 bar (8 MPa) the water is a liquid or a two-phase mixture, and this table does not apply — use the saturated tables instead.
Values are IAPWS-IF97, not interpolated. Every row is evaluated directly from the industrial formulation at that exact temperature, so there is no interpolation error between rows. If you need a temperature between the 20 °C steps, the calculator computes it exactly.