Physical Properties for Steam and Water

Steam/Water Properties:

Bulk Modulus of Elasticity
Compressibility Factor
Internal Energy
Isentropic Expansion Coef., Gamma
Kinematic Viscosity
Prandtl Number
Saturation Temperature
Sonic Velocity
Specific Heat, cp
Specific Heat, cv
Specific Volume
Temperature Subcool
Temperature Superheat
Thermal Conductivity
SteamCalc Viewer
SteamCalc Viewer will soon be included for free in all AFT software. It provides three ways to calculate steam and water properties from a broad range of input parameters:
  • Single Point - properties calculated at a single point
  • Two Points - the difference in value between the two inputs for all selected output parameters
  • Range - properties calculated over a range of points based on two inputs. The first input is a single value and the second input includes a start value, end value and increment. The output displays properties for each increment over the range. Range output may also be graphed.


  • Configure parameters displayed, display order and number of digits
  • Supports English and SI units
  • Save or set your parameter and unit preferences as the default
  • Save and reload input sets
  • Customize your graphs using colors, axis scale, titles, markers and more
  • Use your graphs in other documents

SteamCalc FAQ

Does SteamCalc calculate saturation properties?
SteamCalc can be used to easily determine saturated liquid and vapor properties. In addition, SteamCalc has the ability to calculate properties in the two-phase saturation region.
I want to optimize a system without any compressors or fans. Do I still need to enter cost data?
No. Many gas systems (especially steam systems) are pressure driven, and weight or area optimization can be quickly and effectively used to optimize the system. While it may not be as effective as cost optimization, weight optimization for pipes and area optimization for ducts will frequently track cost with a minimum of effort.

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