Superheated Steam Table — 120 bar (12 MPa)
Specific volume, internal energy, enthalpy, entropy, density and isobaric specific heat of superheated steam at 120 bar (12 MPa), computed from IAPWS-IF97 — the same formulation the SimuPipe solver uses. Rows run from the saturation temperature (324.68 °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) |
|---|---|---|---|---|---|---|
| 324.68Sat. | 0.014269 | 70.0822 | 2514.4 | 2685.6 | 5.4941 | 8.8189 |
| 340 | 0.016211 | 61.6856 | 2598.9 | 2793.5 | 5.6725 | 5.8968 |
| 360 | 0.018123 | 55.1799 | 2678.4 | 2895.9 | 5.8369 | 4.5309 |
| 380 | 0.019708 | 50.7417 | 2742.6 | 2979.1 | 5.9664 | 3.8563 |
| 400 | 0.021108 | 47.3761 | 2798.6 | 3051.9 | 6.0762 | 3.4551 |
| 420 | 0.022387 | 44.6695 | 2849.6 | 3118.2 | 6.1733 | 3.1912 |
| 440 | 0.023580 | 42.4090 | 2897.1 | 3180.1 | 6.2613 | 3.0071 |
| 460 | 0.024709 | 40.4708 | 2942.3 | 3238.8 | 6.3425 | 2.8737 |
| 480 | 0.025789 | 38.7762 | 2985.8 | 3295.2 | 6.4185 | 2.7748 |
| 500 | 0.026830 | 37.2721 | 3028.0 | 3350.0 | 6.4902 | 2.7002 |
| 520 | 0.027839 | 35.9212 | 3069.3 | 3403.4 | 6.5584 | 2.6432 |
| 540 | 0.028822 | 34.6963 | 3109.9 | 3455.8 | 6.6237 | 2.5993 |
| 560 | 0.029782 | 33.5769 | 3150.0 | 3507.4 | 6.6864 | 2.5654 |
| 580 | 0.030725 | 32.5471 | 3189.8 | 3558.4 | 6.7469 | 2.5391 |
| 600 | 0.031651 | 31.5945 | 3229.2 | 3609.0 | 6.8055 | 2.5188 |
| 620 | 0.032564 | 30.7091 | 3268.5 | 3659.2 | 6.8624 | 2.5033 |
| 640 | 0.033464 | 29.8827 | 3307.6 | 3709.2 | 6.9177 | 2.4917 |
| 660 | 0.034354 | 29.1086 | 3346.7 | 3758.9 | 6.9716 | 2.4832 |
| 680 | 0.035235 | 28.3812 | 3385.7 | 3808.5 | 7.0241 | 2.4773 |
| 700 | 0.036107 | 27.6955 | 3424.7 | 3858.0 | 7.0756 | 2.4737 |
| 720 | 0.036972 | 27.0477 | 3463.8 | 3907.5 | 7.1259 | 2.4720 |
| 740 | 0.037830 | 26.4341 | 3503.0 | 3956.9 | 7.1751 | 2.4718 |
| 760 | 0.038682 | 25.8518 | 3542.2 | 4006.4 | 7.2235 | 2.4731 |
| 780 | 0.039529 | 25.2980 | 3581.5 | 4055.9 | 7.2709 | 2.4756 |
| 800 | 0.040371 | 24.7705 | 3621.0 | 4105.4 | 7.3175 | 2.4793 |
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 120 bar (12 MPa) that pressure term is worth 484.4 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 324.68 °C. Below that temperature at 120 bar (12 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.