Saturated Steam Table: Pressure, Temperature and Enthalpy Values

A saturated steam table gives the saturation temperature, enthalpy (heat content) and specific volume of saturated steam at each pressure. It is the first reference used when sizing steam boilers, heat exchangers, steam traps and steam lines.

The table below covers gauge pressures (bar g) from 0 to 45 bar and lists temperature, enthalpy, specific volume and density of saturated steam. With the calculator above the table you can also find approximate values for pressures between the table rows.

How to Read the Steam Table

• P (bar g): Gauge pressure as read on a pressure gauge. 0 bar g corresponds to atmospheric pressure; the table takes absolute pressure as approximately “P + 1 bar”.
• t (°C): Saturation (boiling) temperature at that pressure.
• hf – enthalpy of water: Heat contained in 1 kg of water at saturation temperature (sensible heat).
• hfg – latent heat: Heat required to turn 1 kg of water into steam at the same temperature. This is the main energy steam releases to a heating surface when it condenses.
• hg – enthalpy of steam: hf + hfg; the total heat content of dry saturated steam.
• Specific volume and density: The volume occupied by 1 kg of steam and its inverse; used for pipe sizing and steam velocity calculations.

Example: Steam Consumption of a Heater

Consider a heat exchanger with a 500 kW heat load supplied with saturated steam at 10 bar g. The table gives a saturation temperature of 184.1 °C and a latent heat of 477.4 kcal/kg (about 1999 kJ/kg). If condensate leaves at saturation temperature, steam consumption is approximately:

ṁ = 500 kW × 3600 / 1999 kJ/kg ≈ 900 kg/h

The same table shows that 1 kg of steam at 10 bar g occupies 0.1774 m³, a value used to size the steam main. Choosing a steam trap that matches the calculated load is also based on these data.

Saturated Steam Table (0–45 bar g)

Values are taken from standard saturated steam tables; enthalpies are in kcal/kg (1 kcal/kg = 4.1868 kJ/kg).

Frequently Asked Questions

Conclusion

The steam table is the basis for calculating steam consumption, pipe sizes, condensate loads and steam trap selection. Reading saturation temperature and latent heat correctly – and knowing whether a pressure is gauge or absolute – is the first step towards an efficient and safe steam system. Explore suitable products for your steam lines in our steam traps product group.