THERMAL PROPERTIES · REFERENCE

Liquid Water and Superheated Steam at Selected Pressures

Discrete single-phase properties of liquid water and superheated steam at selected absolute pressures and temperatures.

Conditions and limits

Discrete states are specified by temperature and absolute pressure. Each point is at least 10 K from its saturation temperature at that pressure. Negative T − Tsat indicates compressed liquid; positive indicates superheated steam.

Only listed states are provided; interpolation, ice, saturation-line points, wet steam, two-phase mixtures and near-critical states are excluded. Enthalpy uses CoolProp’s default water reference state; check consistency before combining sources. Displayed digits do not establish model accuracy.

Lookup example

For superheated steam at 0.1 MPa absolute and 120 °C, find the 120 °C row in the 0.1 MPa table: density is 0.55767 kg/m³. This value is for the listed single-phase state only; do not interpolate other temperatures or pressures.

0.1 MPa absolute · saturation temperature 99.606 °C

0.1 MPa absolute · saturation temperature 99.606 °C
Temperature °C	Phase	T − Tsat K	Density kg/m³	Specific enthalpy kJ/kg	Isobaric heat capacity J/(kg·K)	Dynamic viscosity mPa·s	Conductivity W/(m·K)
20	Liquid water	-79.606	998.21	84.006	4184.1	1.0016	0.59801
26.85	Liquid water	-72.756	996.56	112.65	4180.6	0.85374	0.6095
60	Liquid water	-39.606	983.2	251.25	4185	0.46603	0.651
80	Liquid water	-19.606	971.79	335.05	4196.8	0.35405	0.66699
120	Superheated steam	20.394	0.55767	2716.6	2019	0.013009	0.02624
150	Superheated steam	50.394	0.51636	2776.6	1984.6	0.014192	0.028843
180	Superheated steam	80.394	0.48113	2836	1974.9	0.015394	0.03156
200	Superheated steam	100.39	0.46031	2875.5	1975.4	0.016204	0.033436
220	Superheated steam	120.39	0.44129	2915	1979.3	0.017019	0.035361
250	Superheated steam	150.39	0.4156	2974.5	1989.3	0.018249	0.03834
300	Superheated steam	200.39	0.37895	3074.5	2012.4	0.020313	0.04353
350	Superheated steam	250.39	0.34832	3175.8	2039.9	0.022384	0.048975

0.5 MPa absolute · saturation temperature 151.831 °C

0.5 MPa absolute · saturation temperature 151.831 °C
Temperature °C	Phase	T − Tsat K	Density kg/m³	Specific enthalpy kJ/kg	Isobaric heat capacity J/(kg·K)	Dynamic viscosity mPa·s	Conductivity W/(m·K)
20	Liquid water	-131.83	998.39	84.382	4182.8	1.0015	0.59825
26.85	Liquid water	-124.98	996.74	113.02	4179.5	0.85371	0.60972
60	Liquid water	-91.831	983.37	251.58	4184.1	0.46613	0.65121
80	Liquid water	-71.831	971.97	335.37	4195.9	0.35416	0.66721
120	Liquid water	-31.831	943.26	504.02	4242.7	0.23211	0.68243
180	Superheated steam	28.169	2.4712	2812.4	2203	0.015216	0.032913
200	Superheated steam	48.169	2.3528	2855.8	2142.9	0.01606	0.034648
220	Superheated steam	68.169	2.2472	2898.3	2107	0.016902	0.036445
250	Superheated steam	98.169	2.1078	2961	2078.8	0.018164	0.039254
300	Superheated steam	148.17	1.9135	3064.6	2067	0.020265	0.044223
350	Superheated steam	198.17	1.7539	3168.1	2076.3	0.022359	0.049512

1 MPa absolute · saturation temperature 179.878 °C

1 MPa absolute · saturation temperature 179.878 °C
Temperature °C	Phase	T − Tsat K	Density kg/m³	Specific enthalpy kJ/kg	Isobaric heat capacity J/(kg·K)	Dynamic viscosity mPa·s	Conductivity W/(m·K)
20	Liquid water	-159.88	998.62	84.853	4181.3	1.0013	0.59854
26.85	Liquid water	-153.03	996.96	113.48	4178.1	0.85366	0.61
60	Liquid water	-119.88	983.59	252	4183	0.46625	0.65147
80	Liquid water	-99.878	972.19	335.77	4194.8	0.35429	0.66748
120	Liquid water	-59.878	943.51	504.38	4241.5	0.23225	0.68273
150	Liquid water	-29.878	917.31	632.5	4305.4	0.18274	0.68137
200	Superheated steam	20.122	4.8539	2828.3	2428.1	0.015876	0.036312
220	Superheated steam	40.122	4.6087	2875.5	2308	0.016755	0.037906
250	Superheated steam	70.122	4.2965	2943.1	2210.6	0.018058	0.040464
300	Superheated steam	120.12	3.8762	3051.6	2142.5	0.020205	0.045122
350	Superheated steam	170.12	3.5398	3158.2	2124.8	0.022329	0.050201

2 MPa absolute · saturation temperature 212.377 °C

2 MPa absolute · saturation temperature 212.377 °C
Temperature °C	Phase	T − Tsat K	Density kg/m³	Specific enthalpy kJ/kg	Isobaric heat capacity J/(kg·K)	Dynamic viscosity mPa·s	Conductivity W/(m·K)
20	Liquid water	-192.38	999.08	85.793	4178.2	1.001	0.59913
26.85	Liquid water	-185.53	997.41	114.4	4175.3	0.85358	0.61056
60	Liquid water	-152.38	984.02	252.84	4180.8	0.46649	0.65199
80	Liquid water	-132.38	972.64	336.57	4192.6	0.35456	0.66802
120	Liquid water	-92.377	944.01	505.08	4238.9	0.23251	0.68334
150	Liquid water	-62.377	917.87	633.12	4302.2	0.183	0.68205
180	Liquid water	-32.377	887.67	763.56	4400.5	0.15063	0.67203
200	Liquid water	-12.377	865	852.45	4493.2	0.1347	0.66039
250	Superheated steam	37.623	8.9689	2903.2	2558.4	0.017848	0.043157
300	Superheated steam	87.623	7.9677	3024.2	2320.3	0.020092	0.047048
350	Superheated steam	137.62	7.215	3137.7	2232.4	0.022275	0.051646

3 MPa absolute · saturation temperature 233.853 °C

3 MPa absolute · saturation temperature 233.853 °C
Temperature °C	Phase	T − Tsat K	Density kg/m³	Specific enthalpy kJ/kg	Isobaric heat capacity J/(kg·K)	Dynamic viscosity mPa·s	Conductivity W/(m·K)
20	Liquid water	-213.85	999.53	86.732	4175.1	1.0007	0.59971
26.85	Liquid water	-207	997.85	115.32	4172.5	0.85349	0.61112
60	Liquid water	-173.85	984.46	253.68	4178.6	0.46673	0.65251
80	Liquid water	-153.85	973.09	337.36	4190.5	0.35483	0.66855
120	Liquid water	-113.85	944.5	505.78	4236.4	0.23277	0.68394
150	Liquid water	-83.853	918.44	633.74	4299	0.18325	0.68273
180	Liquid water	-53.853	888.33	764.06	4396.1	0.15088	0.67279
200	Liquid water	-33.853	865.76	852.86	4487.5	0.13495	0.66122
220	Liquid water	-13.853	840.82	943.76	4609.3	0.12195	0.64589
250	Superheated steam	16.147	14.159	2856.5	3083.1	0.017637	0.046361
300	Superheated steam	66.147	12.318	2994.3	2541.4	0.019985	0.049177
350	Superheated steam	116.15	11.043	3116.1	2355.9	0.022228	0.053194

Method, checks and license

Generated with CoolProp 8.0.0 HEOS::Water from temperature and absolute pressure. Thermodynamic properties use IAPWS-95; viscosity and conductivity use IAPWS R12-08 and R15-11, respectively, rather than the thermodynamic equation alone. Phases are checked in CoolProp and thermodynamic values compared with IF97. IF97 and IAPWS-95 are related formulations, so this is neither an independent experiment nor a full-range accuracy guarantee.

For example, at 3 MPa and 26.85 °C, liquid-water density is about 997.85 kg/m³ and enthalpy about 115.32 kJ/kg. IF97 gives approximately 997.85 kg/m³ and 115.33 kJ/kg at this point; differences between related models are not a measurement uncertainty.

IAPWS IF97 · IAPWS-95 · IAPWS R12-08 · IAPWS R15-11 · CoolProp Water · CoolProp MIT License · Saturated water and steam table

For engineering estimates; verify phase, model range and applicable requirements.