Superheated Steam Table — 300 bar (30 MPa)
Specific volume, internal energy, enthalpy, entropy, density and isobaric specific heat of superheated steam at 300 bar (30 MPa), computed from IAPWS-IF97 — the same formulation the SimuPipe solver uses. Rows run from 400 °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) |
|---|---|---|---|---|---|---|
| 420 | 4.9210e-3 | 203.2095 | 2405.2 | 2552.8 | 5.0625 | 12.8706 |
| 440 | 6.2281e-3 | 160.5622 | 2562.0 | 2748.9 | 5.3416 | 7.7964 |
| 460 | 7.1934e-3 | 139.0165 | 2668.0 | 2883.8 | 5.5284 | 5.9370 |
| 480 | 7.9924e-3 | 125.1188 | 2752.2 | 2992.0 | 5.6740 | 4.9638 |
| 500 | 8.6903e-3 | 115.0708 | 2824.1 | 3084.8 | 5.7956 | 4.3597 |
| 520 | 9.3195e-3 | 107.3014 | 2888.1 | 3167.7 | 5.9015 | 3.9532 |
| 540 | 9.8993e-3 | 101.0176 | 2946.7 | 3243.7 | 5.9962 | 3.6660 |
| 560 | 0.010442 | 95.7707 | 3001.6 | 3314.8 | 6.0826 | 3.4552 |
| 580 | 0.010955 | 91.2850 | 3053.6 | 3382.3 | 6.1626 | 3.2955 |
| 600 | 0.011444 | 87.3804 | 3103.5 | 3446.9 | 6.2374 | 3.1713 |
| 620 | 0.011914 | 83.9327 | 3151.8 | 3509.3 | 6.3081 | 3.0728 |
| 640 | 0.012368 | 80.8530 | 3198.9 | 3569.9 | 6.3752 | 2.9936 |
| 660 | 0.012808 | 78.0754 | 3244.9 | 3629.1 | 6.4394 | 2.9292 |
| 680 | 0.013236 | 75.5499 | 3290.1 | 3687.2 | 6.5009 | 2.8765 |
| 700 | 0.013654 | 73.2376 | 3334.6 | 3744.2 | 6.5602 | 2.8331 |
| 720 | 0.014063 | 71.1078 | 3378.6 | 3800.5 | 6.6175 | 2.7972 |
| 740 | 0.014464 | 69.1360 | 3422.2 | 3856.2 | 6.6729 | 2.7676 |
| 760 | 0.014858 | 67.3020 | 3465.5 | 3911.3 | 6.7268 | 2.7433 |
| 780 | 0.015246 | 65.5893 | 3508.5 | 3965.9 | 6.7792 | 2.7234 |
| 800 | 0.015629 | 63.9843 | 3551.4 | 4020.2 | 6.8303 | 2.7072 |
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 300 bar (30 MPa) that pressure term is worth 468.9 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 on subcritical pages; this page has none, because there is no saturation line above the critical pressure.
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.