Superheated Steam Table — 50 bar (5 MPa)
Specific volume, internal energy, enthalpy, entropy, density and isobaric specific heat of superheated steam at 50 bar (5 MPa), computed from IAPWS-IF97 — the same formulation the SimuPipe solver uses. Rows run from the saturation temperature (263.94 °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) |
|---|---|---|---|---|---|---|
| 263.94Sat. | 0.039446 | 25.3509 | 2597.0 | 2794.2 | 5.9737 | 4.4378 |
| 280 | 0.042275 | 23.6548 | 2646.7 | 2858.1 | 6.0909 | 3.6350 |
| 300 | 0.045347 | 22.0524 | 2698.9 | 2925.6 | 6.2109 | 3.1714 |
| 320 | 0.048130 | 20.7769 | 2745.5 | 2986.2 | 6.3148 | 2.9028 |
| 340 | 0.050726 | 19.7137 | 2788.7 | 3042.4 | 6.4080 | 2.7269 |
| 360 | 0.053188 | 18.8011 | 2829.7 | 3095.6 | 6.4934 | 2.6058 |
| 380 | 0.055552 | 18.0012 | 2869.1 | 3146.8 | 6.5731 | 2.5203 |
| 400 | 0.057840 | 17.2891 | 2907.4 | 3196.6 | 6.6481 | 2.4590 |
| 420 | 0.060068 | 16.6477 | 2945.0 | 3245.3 | 6.7194 | 2.4148 |
| 440 | 0.062249 | 16.0645 | 2982.0 | 3293.3 | 6.7877 | 2.3829 |
| 460 | 0.064391 | 15.5301 | 3018.7 | 3340.7 | 6.8532 | 2.3601 |
| 480 | 0.066501 | 15.0375 | 3055.2 | 3387.7 | 6.9165 | 2.3440 |
| 500 | 0.068583 | 14.5809 | 3091.6 | 3434.5 | 6.9778 | 2.3330 |
| 520 | 0.070642 | 14.1559 | 3127.8 | 3481.1 | 7.0373 | 2.3260 |
| 540 | 0.072681 | 13.7587 | 3164.1 | 3527.5 | 7.0952 | 2.3221 |
| 560 | 0.074703 | 13.3864 | 3200.4 | 3574.0 | 7.1516 | 2.3208 |
| 580 | 0.076709 | 13.0362 | 3236.8 | 3620.4 | 7.2066 | 2.3215 |
| 600 | 0.078703 | 12.7060 | 3273.3 | 3666.8 | 7.2604 | 2.3238 |
| 620 | 0.080684 | 12.3940 | 3309.9 | 3713.3 | 7.3131 | 2.3275 |
| 640 | 0.082655 | 12.0985 | 3346.7 | 3759.9 | 7.3647 | 2.3324 |
| 660 | 0.084616 | 11.8181 | 3383.6 | 3806.6 | 7.4153 | 2.3383 |
| 680 | 0.086569 | 11.5515 | 3420.6 | 3853.5 | 7.4650 | 2.3450 |
| 700 | 0.088515 | 11.2976 | 3457.9 | 3900.5 | 7.5137 | 2.3525 |
| 720 | 0.090453 | 11.0555 | 3495.3 | 3947.6 | 7.5617 | 2.3606 |
| 740 | 0.092385 | 10.8242 | 3533.0 | 3994.9 | 7.6088 | 2.3692 |
| 760 | 0.094312 | 10.6031 | 3570.8 | 4042.4 | 7.6552 | 2.3783 |
| 780 | 0.096234 | 10.3913 | 3608.8 | 4090.0 | 7.7009 | 2.3879 |
| 800 | 0.098151 | 10.1884 | 3647.1 | 4137.9 | 7.7459 | 2.3978 |
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 50 bar (5 MPa) that pressure term is worth 490.8 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 263.94 °C. Below that temperature at 50 bar (5 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.