Superheated Steam Table — 1 bar (0.1 MPa)
Specific volume, internal energy, enthalpy, entropy, density and isobaric specific heat of superheated steam at 1 bar (0.1 MPa), computed from IAPWS-IF97 — the same formulation the SimuPipe solver uses. Rows run from the saturation temperature (99.61 °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) |
|---|---|---|---|---|---|---|
| 99.61Sat. | 1.6940 | 0.5903 | 2505.5 | 2674.9 | 7.3588 | 2.0759 |
| 100 | 1.6960 | 0.5896 | 2506.2 | 2675.8 | 7.3610 | 2.0741 |
| 120 | 1.7932 | 0.5577 | 2537.3 | 2716.6 | 7.4676 | 2.0187 |
| 140 | 1.8891 | 0.5293 | 2567.8 | 2756.7 | 7.5671 | 1.9933 |
| 160 | 1.9841 | 0.5040 | 2598.0 | 2796.4 | 7.6610 | 1.9805 |
| 180 | 2.0785 | 0.4811 | 2628.1 | 2836.0 | 7.7503 | 1.9755 |
| 200 | 2.1725 | 0.4603 | 2658.2 | 2875.5 | 7.8356 | 1.9757 |
| 220 | 2.2661 | 0.4413 | 2688.4 | 2915.0 | 7.9174 | 1.9793 |
| 240 | 2.3596 | 0.4238 | 2718.7 | 2954.7 | 7.9962 | 1.9854 |
| 260 | 2.4528 | 0.4077 | 2749.2 | 2994.4 | 8.0723 | 1.9932 |
| 280 | 2.5459 | 0.3928 | 2779.8 | 3034.4 | 8.1458 | 2.0022 |
| 300 | 2.6389 | 0.3790 | 2810.7 | 3074.5 | 8.2171 | 2.0121 |
| 320 | 2.7318 | 0.3661 | 2841.7 | 3114.9 | 8.2863 | 2.0227 |
| 340 | 2.8246 | 0.3540 | 2873.0 | 3155.5 | 8.3536 | 2.0338 |
| 360 | 2.9173 | 0.3428 | 2904.5 | 3196.2 | 8.4190 | 2.0454 |
| 380 | 3.0101 | 0.3322 | 2936.3 | 3237.3 | 8.4828 | 2.0574 |
| 400 | 3.1027 | 0.3223 | 2968.3 | 3278.5 | 8.5451 | 2.0697 |
| 420 | 3.1954 | 0.3130 | 3000.5 | 3320.1 | 8.6059 | 2.0822 |
| 440 | 3.2879 | 0.3041 | 3033.0 | 3361.8 | 8.6653 | 2.0950 |
| 460 | 3.3805 | 0.2958 | 3065.8 | 3403.9 | 8.7234 | 2.1080 |
| 480 | 3.4731 | 0.2879 | 3098.8 | 3446.2 | 8.7803 | 2.1212 |
| 500 | 3.5656 | 0.2805 | 3132.2 | 3488.7 | 8.8361 | 2.1345 |
| 520 | 3.6581 | 0.2734 | 3165.7 | 3531.5 | 8.8907 | 2.1480 |
| 540 | 3.7506 | 0.2666 | 3199.6 | 3574.6 | 8.9444 | 2.1617 |
| 560 | 3.8430 | 0.2602 | 3233.7 | 3618.0 | 8.9971 | 2.1754 |
| 580 | 3.9355 | 0.2541 | 3268.1 | 3661.6 | 9.0489 | 2.1892 |
| 600 | 4.0279 | 0.2483 | 3302.8 | 3705.6 | 9.0998 | 2.2031 |
| 620 | 4.1204 | 0.2427 | 3337.7 | 3749.8 | 9.1498 | 2.2171 |
| 640 | 4.2128 | 0.2374 | 3373.0 | 3794.3 | 9.1991 | 2.2311 |
| 660 | 4.3052 | 0.2323 | 3408.5 | 3839.0 | 9.2476 | 2.2451 |
| 680 | 4.3976 | 0.2274 | 3444.3 | 3884.1 | 9.2953 | 2.2591 |
| 700 | 4.4900 | 0.2227 | 3480.4 | 3929.4 | 9.3424 | 2.2732 |
| 720 | 4.5824 | 0.2182 | 3516.7 | 3975.0 | 9.3888 | 2.2872 |
| 740 | 4.6748 | 0.2139 | 3553.4 | 4020.9 | 9.4345 | 2.3013 |
| 760 | 4.7672 | 0.2098 | 3590.3 | 4067.0 | 9.4796 | 2.3153 |
| 780 | 4.8596 | 0.2058 | 3627.5 | 4113.5 | 9.5241 | 2.3293 |
| 800 | 4.9520 | 0.2019 | 3665.0 | 4160.2 | 9.5681 | 2.3434 |
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 1 bar (0.1 MPa) that pressure term is worth 495.2 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 99.61 °C. Below that temperature at 1 bar (0.1 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.