JAHM Curve Data

What is it?
An extensive library of temperature-dependent material property data.
What is in it?
Temperature-dependent mechanical, thermal, physical and electrical properties, stress-strain curves, fatigue, creep, and magnetic properties for over 2,900 materials.
What is it used for?
The data can be used to understand the influence of temperature on mechanical performance, and to provide material properties for use in simulation.
Where does it come from?
The information is published by JAHM Software, Inc.
How can I access it?
Via the GRANTA MI materials information system or CES Selector PC software.


The JAHM Curve Data, an extensive library of temperature-dependent material property data, is available through Granta materials software.

Simulation is vital to product development but its accuracy depends on the quality of input data. Within Granta software, enterprises can create a single, easily-accessible, traceable source for all corporate materials data, and manage the full lifecycle for simulation input data: from test, through analysis, to simulation model. This in-house data is complemented by leading reference data covering all material types. The widely-used and respected JAHM Curve Data gives analysts access to the temperature-dependent material property data that they need in one place, including making it available and searchable from directly within CAE software. This ensures accuracy and consistency, avoids error, protects investments in simulation, and increases confidence in simulation results. The JAHM Curve Data is also useful in materials selection studies, for example, when screening the ‘universe’ of available materials to focus in-depth design or simulation on the likeliest candidate materials.

Comparing curve data in the JAHM Curve Data module using MI Explore.

Comparing curve data in the JAHM Curve Data module using MI Explore.

What data is included?

Data on more than 2,900 materials, covering:

  • Metals and alloys
  • Ceramics and glasses
  • Composites
  • Elements
  • Functional materials
  • Natural materials
  • Polymers.

32 different properties are available, including:

  • Mechanical: elastic, bulk and shear moduli, tensile and yield strengths, elongation, Poisson's ratio and true stress-strain curves
  • Thermal: thermal conductivity, specific heat, thermal expansion, thermal diffusivity, emissivity
  • Physical: density, viscosity, vapor pressure
  • Electrical: electrical conductivity, electrical resistivity
  • Creep: creep strength, stress-rupture
  • Fatigue: S-N and e-N fatigue curves
  • Magnetic: B-H curves, permeability.

Comparing strength and stiffness at elevated temperature using CES Selector.

Comparing strength and stiffness at elevated temperature using CES Selector.

Using the JAHM Curve Data with Granta software

GRANTA MI enables companies to create a single, easily-accessible ‘gold source’ for all corporate materials data—both proprietary IP and data from trusted reference sources. Now the JAHM Curve Data is integrated into this system, making it instantly accessible and searchable for analysts and engineers via the GRANTA MI:Materials Gateway app within their routine workflow.

CES Selector is an easy-to-use PC tool to plot, compare, and select using materials data. Its powerful charting tools and systematic selection features filter material options based on their properties and help users to assess trade-offs. The JAHM Curve Data provides improved coverage of high-temperature properties and enables engineers to identify material grades for which good simulation input data exists.