Superheated Steam Table — 8 bar (0.8 MPa)
Specific volume, internal energy, enthalpy, entropy, density and isobaric specific heat of superheated steam at 8 bar (0.8 MPa), computed from IAPWS-IF97 — the same formulation the SimuPipe solver uses. Rows run from the saturation temperature (170.41 °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) |
|---|---|---|---|---|---|---|
| 170.41Sat. | 0.240328 | 4.1610 | 2576.0 | 2768.3 | 6.6615 | 2.6032 |
| 180 | 0.247183 | 4.0456 | 2594.7 | 2792.4 | 6.7154 | 2.4499 |
| 200 | 0.260868 | 3.8334 | 2631.1 | 2839.8 | 6.8176 | 2.3030 |
| 220 | 0.274043 | 3.6491 | 2665.7 | 2885.0 | 6.9112 | 2.2236 |
| 240 | 0.286878 | 3.4858 | 2699.4 | 2928.9 | 6.9985 | 2.1732 |
| 260 | 0.299469 | 3.3392 | 2732.4 | 2972.0 | 7.0810 | 2.1411 |
| 280 | 0.311878 | 3.2064 | 2765.1 | 3014.6 | 7.1594 | 2.1211 |
| 300 | 0.324151 | 3.0850 | 2797.6 | 3056.9 | 7.2345 | 2.1097 |
| 320 | 0.336316 | 2.9734 | 2830.0 | 3099.1 | 7.3068 | 2.1042 |
| 340 | 0.348397 | 2.8703 | 2862.4 | 3141.1 | 7.3765 | 2.1029 |
| 360 | 0.360409 | 2.7746 | 2894.9 | 3183.2 | 7.4441 | 2.1048 |
| 380 | 0.372365 | 2.6855 | 2927.4 | 3225.3 | 7.5096 | 2.1090 |
| 400 | 0.384273 | 2.6023 | 2960.1 | 3267.6 | 7.5733 | 2.1149 |
| 420 | 0.396142 | 2.5243 | 2993.0 | 3309.9 | 7.6353 | 2.1223 |
| 440 | 0.407977 | 2.4511 | 3026.1 | 3352.5 | 7.6958 | 2.1307 |
| 460 | 0.419783 | 2.3822 | 3059.3 | 3395.2 | 7.7548 | 2.1400 |
| 480 | 0.431563 | 2.3172 | 3092.8 | 3438.1 | 7.8126 | 2.1500 |
| 500 | 0.443321 | 2.2557 | 3126.5 | 3481.2 | 7.8690 | 2.1606 |
| 520 | 0.455059 | 2.1975 | 3160.4 | 3524.5 | 7.9244 | 2.1717 |
| 540 | 0.466780 | 2.1423 | 3194.6 | 3568.0 | 7.9786 | 2.1833 |
| 560 | 0.478486 | 2.0899 | 3229.0 | 3611.8 | 8.0318 | 2.1951 |
| 580 | 0.490178 | 2.0401 | 3263.7 | 3655.8 | 8.0840 | 2.2073 |
| 600 | 0.501857 | 1.9926 | 3298.6 | 3700.1 | 8.1353 | 2.2197 |
| 620 | 0.513526 | 1.9473 | 3333.8 | 3744.6 | 8.1857 | 2.2323 |
| 640 | 0.525186 | 1.9041 | 3369.3 | 3789.4 | 8.2353 | 2.2451 |
| 660 | 0.536836 | 1.8628 | 3405.0 | 3834.4 | 8.2841 | 2.2581 |
| 680 | 0.548478 | 1.8232 | 3441.0 | 3879.7 | 8.3321 | 2.2711 |
| 700 | 0.560113 | 1.7854 | 3477.2 | 3925.3 | 8.3794 | 2.2843 |
| 720 | 0.571742 | 1.7490 | 3513.7 | 3971.1 | 8.4260 | 2.2975 |
| 740 | 0.583364 | 1.7142 | 3550.5 | 4017.2 | 8.4719 | 2.3108 |
| 760 | 0.594981 | 1.6807 | 3587.6 | 4063.5 | 8.5172 | 2.3242 |
| 780 | 0.606594 | 1.6485 | 3624.9 | 4110.2 | 8.5619 | 2.3376 |
| 800 | 0.618202 | 1.6176 | 3662.5 | 4157.0 | 8.6060 | 2.3510 |
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 8 bar (0.8 MPa) that pressure term is worth 494.6 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 170.41 °C. Below that temperature at 8 bar (0.8 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.