Saturated Steam Table by Pressure

Saturated steam table by pressure: saturation temperature, specific volume, enthalpy and entropy from 0.01 to 220 bar absolute, computed with IAPWS IF97.

For reference. Verify the applicable standard and manufacturer data before sizing pressure vessels or safety valves.

Dimension drawing and symbols

p_sat: Saturation pressure (absolute) bar
T_sat: Saturation temperature °C
v_f: Specific volume of saturated liquid m³/kg
v_g: Specific volume of saturated vapour m³/kg
h_f: Specific enthalpy of saturated liquid kJ/kg
h_fg: Enthalpy of vaporisation kJ/kg
h_g: Specific enthalpy of saturated vapour kJ/kg
s_f: Specific entropy of saturated liquid kJ/(kg·K)
s_g: Specific entropy of saturated vapour kJ/(kg·K)

Subscripts: f saturated liquid, g saturated vapour, fg the difference on vaporisation (g minus f). Reference state: internal energy and entropy are zero for saturated liquid at the triple point.

Visible rows: 72

Saturated steam table by pressure (absolute pressure)
p_satabsolute pressurebar	T_satsaturation temp.°C	v_fliquid volume	v_gvapour volume	h_fliquid enthalpy	h_fgvaporisation	h_gvapour enthalpy	s_fliquid entropy	s_gvapour entropy
		Specific volume, m³/kg		Specific enthalpy, kJ/kg			Specific entropy, kJ/(kg·K)
0.01	6.97	0.001000	129.18	29.30	2484.38	2513.68	0.1059	8.9749
0.02	17.50	0.001001	66.99	73.43	2459.48	2532.91	0.2606	8.7227
0.03	24.08	0.001003	45.655	100.99	2443.89	2544.88	0.3543	8.5766
0.04	28.96	0.001004	34.792	121.40	2432.31	2553.71	0.4224	8.4735
0.05	32.88	0.001005	28.186	137.77	2423.00	2560.77	0.4763	8.3939
0.06	36.16	0.001006	23.734	151.49	2415.17	2566.67	0.5209	8.3291
0.08	41.51	0.001008	18.099	173.85	2402.39	2576.24	0.5925	8.2274
0.1	45.81	0.001010	14.671	191.81	2392.07	2583.89	0.6492	8.1489
0.15	53.97	0.001014	10.02	225.94	2372.37	2598.30	0.7548	8.0071
0.2	60.06	0.001017	7.6482	251.40	2357.55	2608.95	0.8320	7.9072
0.3	69.10	0.001022	5.2286	289.23	2335.32	2624.55	0.9439	7.7675
0.4	75.86	0.001026	3.9931	317.57	2318.48	2636.05	1.0259	7.6690
0.5	81.32	0.001030	3.2401	340.48	2304.74	2645.21	1.0910	7.5930
0.6	85.93	0.001033	2.7318	359.84	2293.02	2652.85	1.1452	7.5311
0.8	93.49	0.001038	2.0872	391.64	2273.54	2665.18	1.2328	7.4339
1	99.61	0.001043	1.694	417.44	2257.51	2674.95	1.3026	7.3588
1.5	111.35	0.001053	1.1594	467.08	2226.03	2693.11	1.4335	7.2229
2	120.21	0.001061	0.88574	504.68	2201.56	2706.24	1.5301	7.1269
2.5	127.41	0.001067	0.7187	535.35	2181.15	2716.50	1.6072	7.0524
3	133.53	0.001073	0.60579	561.46	2163.44	2724.89	1.6718	6.9916
3.5	138.86	0.001079	0.5242	584.31	2147.65	2731.97	1.7275	6.9401
4	143.61	0.001084	0.46239	604.72	2133.33	2738.06	1.7766	6.8954
4.5	147.91	0.001088	0.4139	623.22	2120.16	2743.39	1.8206	6.8560
5	151.84	0.001093	0.3748	640.19	2107.92	2748.11	1.8606	6.8206
6	158.83	0.001101	0.31558	670.50	2085.64	2756.14	1.9311	6.7592
7	164.95	0.001108	0.27276	697.14	2065.61	2762.75	1.9921	6.7070
8	170.41	0.001115	0.24033	721.02	2047.28	2768.30	2.0460	6.6615
9	175.36	0.001121	0.21487	742.72	2030.31	2773.04	2.0944	6.6212
10	179.89	0.001127	0.19435	762.68	2014.44	2777.12	2.1384	6.5850
11	184.07	0.001133	0.17744	781.20	1999.47	2780.67	2.1789	6.5520
12	187.96	0.001139	0.16325	798.50	1985.27	2783.77	2.2163	6.5217
13	191.61	0.001144	0.15117	814.76	1971.73	2786.49	2.2512	6.4936
14	195.05	0.001149	0.14077	830.13	1958.76	2788.89	2.2839	6.4675
15	198.30	0.001154	0.1317	844.72	1946.29	2791.01	2.3147	6.4431
16	201.38	0.001159	0.12373	858.61	1934.27	2792.88	2.3438	6.4200
18	207.12	0.001168	0.11036	884.61	1911.37	2795.99	2.3978	6.3776
20	212.38	0.001177	0.099581	908.62	1889.76	2798.38	2.4470	6.3392
22	217.26	0.001185	0.090695	930.98	1869.22	2800.20	2.4924	6.3040
24	221.80	0.001193	0.083242	951.95	1849.58	2801.54	2.5344	6.2714
26	226.05	0.001201	0.076897	971.74	1830.71	2802.45	2.5738	6.2411
28	230.06	0.001209	0.071428	990.50	1812.51	2803.02	2.6107	6.2126
30	233.86	0.001217	0.066664	1008.37	1794.89	2803.26	2.6456	6.1858
32	237.46	0.001224	0.062475	1025.45	1777.79	2803.24	2.6787	6.1604
34	240.90	0.001231	0.058761	1041.83	1761.14	2802.96	2.7102	6.1362
36	244.19	0.001239	0.055446	1057.57	1744.90	2802.47	2.7403	6.1131
38	247.33	0.001246	0.052468	1072.76	1729.02	2801.78	2.7690	6.0910
40	250.36	0.001253	0.049777	1087.43	1713.47	2800.90	2.7967	6.0697
45	257.44	0.001270	0.044059	1122.14	1675.85	2798.00	2.8613	6.0198
50	263.94	0.001286	0.039446	1154.50	1639.73	2794.23	2.9207	5.9737
55	269.97	0.001303	0.035642	1184.92	1604.79	2789.72	2.9759	5.9307
60	275.59	0.001319	0.032449	1213.73	1570.83	2784.56	3.0274	5.8901
65	280.86	0.001336	0.029728	1241.17	1537.66	2778.83	3.0760	5.8515
70	285.83	0.001352	0.02738	1267.44	1505.13	2772.57	3.1220	5.8146
75	290.54	0.001368	0.025331	1292.70	1473.12	2765.82	3.1658	5.7792
80	295.01	0.001385	0.023528	1317.08	1441.53	2758.61	3.2077	5.7448
85	299.27	0.001401	0.021926	1340.70	1410.26	2750.96	3.2478	5.7115
90	303.35	0.001418	0.020493	1363.65	1379.23	2742.88	3.2866	5.6790
95	307.25	0.001435	0.019203	1386.02	1348.37	2734.38	3.3240	5.6472
100	311.00	0.001453	0.018034	1407.87	1317.61	2725.47	3.3603	5.6159
110	318.08	0.001489	0.015994	1450.28	1256.12	2706.39	3.4300	5.5545
120	324.68	0.001526	0.014269	1491.33	1194.26	2685.58	3.4965	5.4941
130	330.86	0.001566	0.012785	1531.40	1131.49	2662.89	3.5606	5.4339
140	336.67	0.001610	0.011489	1570.88	1067.21	2638.09	3.6230	5.3730
150	342.16	0.001657	0.01034	1610.15	1000.71	2610.86	3.6844	5.3108
160	347.36	0.001710	0.0093081	1649.67	931.13	2580.80	3.7457	5.2463
170	352.29	0.001769	0.0083693	1690.04	857.38	2547.41	3.8077	5.1785
180	356.99	0.001839	0.0074987	1732.02	777.51	2509.53	3.8717	5.1055
190	361.47	0.001925	0.0066726	1776.89	688.52	2465.41	3.9396	5.0246
200	365.75	0.002039	0.0058583	1827.10	584.29	2411.39	4.0154	4.9299
210	369.83	0.002212	0.0049877	1889.40	448.15	2337.54	4.1093	4.8062
220	373.71	0.002750	0.0035766	2021.92	142.27	2164.18	4.3109	4.5308
220.64	373.95	0.003106	0.0031056	2087.55	0.00	2087.55	4.4120	4.4120

Quick answers

At 1 bar absolute, the saturation temperature is 99.61 °C, the enthalpy of vaporisation is 2257.51 kJ/kg and the saturated vapour enthalpy is 2674.95 kJ/kg. View in table
At 2 bar absolute, the saturation temperature is 120.21 °C, the enthalpy of vaporisation is 2201.56 kJ/kg and the saturated vapour enthalpy is 2706.24 kJ/kg. View in table
At 5 bar absolute, the saturation temperature is 151.84 °C, the enthalpy of vaporisation is 2107.92 kJ/kg and the saturated vapour enthalpy is 2748.11 kJ/kg. View in table
At 10 bar absolute, the saturation temperature is 179.89 °C, the enthalpy of vaporisation is 2014.44 kJ/kg and the saturated vapour enthalpy is 2777.12 kJ/kg. View in table
At 20 bar absolute, the saturation temperature is 212.38 °C, the enthalpy of vaporisation is 1889.76 kJ/kg and the saturated vapour enthalpy is 2798.38 kJ/kg. View in table
At 50 bar absolute, the saturation temperature is 263.94 °C, the enthalpy of vaporisation is 1639.73 kJ/kg and the saturated vapour enthalpy is 2794.23 kJ/kg. View in table
At 100 bar absolute, the saturation temperature is 311 °C, the enthalpy of vaporisation is 1317.61 kJ/kg and the saturated vapour enthalpy is 2725.47 kJ/kg. View in table
At 200 bar absolute, the saturation temperature is 365.75 °C, the enthalpy of vaporisation is 584.29 kJ/kg and the saturated vapour enthalpy is 2411.39 kJ/kg. View in table

Conditions and notes

Absolute pressure. Equilibrium state of saturated liquid and saturated vapour. Method IAPWS IF97, reference state saturated liquid at the triple point.

The pressure column is absolute pressure. The difference between gauge and absolute pressure is about 1.013 bar and must be added before reading the table.
Values are computed from the IAPWS IF97 equations. Compared with the IAPWS 95 equation developed for scientific use, in the rows checked below 165 bar the difference is under 0.03 percent in specific volume and under 0.3 kJ/kg in enthalpy. At 200 bar it reaches 0.12 percent and 1 kJ/kg, and at 220 bar about 2 percent and 11 kJ/kg.
Specific volume covers a very wide range, so v_g is written with five significant digits.
The last row is the critical point (220.64 bar). There the f and g values are equal and h_fg is zero.

The table gives, for each absolute pressure, the state in which saturated liquid and saturated vapour coexist. The subscript f means saturated liquid, g means saturated vapour and fg means the difference between them. For example h_fg is the enthalpy of vaporisation and equals h_g minus h_f. The pressure column is absolute pressure. If you read a gauge, absolute pressure is found by adding about 1.013 bar to the gauge pressure. Some handbooks and vendor charts are arranged by gauge pressure, so their rows at the same pressure value cannot be compared directly with the rows of this table. The enthalpy and entropy reference is the same as in IAPWS IF97: the internal energy and entropy of saturated liquid at the triple point (0.01 °C) are taken as zero, so its enthalpy comes out near 0.0006 kJ/kg and shows as 0.00 in the table. Many textbooks use the same reference. Specific volume, enthalpy and entropy are per unit mass. The last row is the critical point: there liquid and vapour cannot be told apart and the fg differences are zero.

Sources

This table is for preliminary reference. Check the applicable standard and product conditions before use.

Source 1. R7/97(2012). Accessed: 2026-10-16
Source 2. NISTIR 5078:1998. Accessed: 2026-10-16

Data version: 2026-10-16

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