Finding data

Data sources available via the evitherm data scheme
Data Source	Materials	Access	Notes
evitherm	Engineering materials	free	At the heart of evitherm is the famous THERSYST database, now online for the first time. The link to the database is available from "User area" after login. 1,000 materials 10,000 data curves Further info
Nelfood	Foods	pay	Physical properties of foods database with bibliographic references and experimental data over a wide range of conditions and processes. A third of NELFOOD data is on the thermal properties of foods 1500 materials 1600 data sets Further info

1. evitherm thermophysical properties database

Link to evitherm thermophysical properties database is accessible after you login to evitherm. After logging in, click on the User area link in the left menu and click on Finding data page.

2. Nelfood database

Go to "My profile" on your User page and click on "Property data". From there you will be led through the process of buying access at a specially discounted annual rate. Following the purchase you will be able to access data subsequently by clicking on "Property data" in the left-hand menu of your User page.

3. Databases outside the evitherm data scheme

If you know the material and thermal property(s) you require and you want to search databases straight away then click on the required hot-linked data source in the table below.

If the data sources below are indicated under the Access heading as "pay" that means when you click on them you will be taken to the data source website and have to pay for access to the data in the normal way for that data supplier. You will NOT need to pay evitherm anything for access to these data.

Data sources NOT available via the evitherm data scheme
Data source	Materials	Access	Notes
ATHAS	Polymers	free	Polymers database
AIST	Ceramics, ceramic thin films	free	Provides optical properties (e.g. transmittance, reflectance, emissivity) of ceramics and ceramics thin films database from the National Institute of Advanced Industrial Science and Technology, Japan
ARTI	Refrigerants	free	The Air Conditioning & Refrigeration Technology Institute's Refrigerant Database is an information system on alternative refrigerants, associated lubricants, and their use in air conditioning and refrigeration. Has over 500 refrigerants (including blends)
CAMPUS		free	Claims to be the leading material info system for the plastics industry; 300,000 copies distributed. Data is from the materials suppliers. Seven languages covered.
	Solids, fluids	pay	Full access to the Thermophysical Properties of Matter Database (TPMD) and the Microelectronics Packaging Materials Database (MPMD). Key thermophysical properties covered In TPMD: 5,000 materials 50,000 data curves In MPMD: 750 material 15,000 data curves Further info
DETHERM	Chemical pure substances and mixtures	pay	Thermophysical property data for design and optimisation of chemical plant. From DECHEMA (non-profit making Society for Chemical Engineering and Biotechnology) in Frankfurt, Germany
ILI Metals & Materials Infobase	Metals, standards	pay	Has 70,000 metal classifications, standards, manufacturers, etc.
INSC	Nuclear material properties database	free	Thermodynamic, transport (thermal conductivity, diffusivity, emissivity) and mechanical properties materials for nuclear applications, e.g. for analysts using computer code and doing experiments for safety evaluation of commercial nuclear reactors
JAHM	Elements, Carbon, Metallic alloys, Steels, Oxides, Ceramics, Glasses Composites, Minerals, rocks, Insulation materials, Liquid Fuels	pay	2,200 materials and 16,000 sets of temperature dependent data. Useful for finite element analysis and computational fluid dynamics. Has a demo version
Key to Steel	Steel	pay	Claims to be the world's most comprehensive steel properties database
MatData	Elements, metals, steels, alloys, materials information	free	MatData.Net is a materials search engine that directs you to find materials information in its member databases
MatWeb	Pure Metals, Alloys, Oxides, Non-Oxides, Composites, Glasses, Minerals/Rocks	free	39,000 metals, plastics, ceramics, and composites. Material descriptions are given. Data obtained from manufacturers or references (e.g. books) usually given. Data can be sparse, e.g. just one number for a thermal property, and no uncertainties are given
NIST fluid	Thermophysical properties of gases used in the semiconductor industry	free	NIST database on the thermophysical properties of gases used in the semiconductor industry. Provides heat capacity, thermal conductivity, viscosity, and virial coefficients
NIST HTP	Insulating and building materials, e.g. concrete, fibreboard, plastics, thermal insulation and rubber	free	The NIST Database on Heat Conductivity of Building Materials has data on 2000 measurements. Provides heat transmission properties such as thermal conductivity, resistivity, conductance and resistance, for building materials and thermal insulation. Useful for thermal design of building components and equipment
NIST REFPROP	Refrigerants	pay	NIST reference fluid thermodynamic & transport properties (REFPROP) has thermal properties: thermal conductivity, viscosity, thermal diffusivity, Cp etc.
NIST TRC	Organic solids, organic fluids, chemicals, pharmaceuticals	pay	The Thermodynamics Research Center (TRC) at NIST has data on thermodynamic, thermochemical and transport properties for pure compounds and mixtures of well-defined composition. Specifies uncertainties for practically all the numerical data
NIST WebHTS	High Temperature Superconducting Materials Database	free	The NIST High Temperature Superconducting Materials database (WebHTS) provides evaluated thermal, mechanical, and superconducting property data for oxides and other superconductors
NIST SCD	Structural ceramics	free	The NIST Structural Ceramics Database (SCD) has 30,000 numeric values, covers the physical, mechanical, and thermal properties of oxide, boride, carbide, nitride and oxynitride ceramic materials. In addition to numeric data, the SCD gives full bibliographic references to the sources of the data, along with descriptions of the materials and the measurement methods
PGM Database	Platinum group metals (Pt, Pd, Rh, Ir, Os, Ru) and their alloys, phase diagrams	free	The PGM Database is a collection of published data and internal Johnson Matthey data on the physical properties and characteristics of platinum group metals and their alloys
Polymat	All types of polymers	pay	18,000 trade products of 200 manufacturers are available (in German)
SCIGLASS	Glass	pay	SciGlass is a glass property information system. Has glass property data and estimation procedures for over 120 properties. The glass database includes over 1,000,000 experimental values for 105,000 glasses - over 60% of the world's published glass data
TAPP	Pure chemical compounds	pay	Thermochemical and physical properties of pure chemical compounds. TAPP contains properties for over 11,000 solid compounds and over 6,000 fluids and includes data for both organic and inorganic compounds

Are the data relevant to the application?

You may find values for the thermal conductivity of alumina or the emissivity of steel but there's a wide spread. Why? See evitherm advice on choosing data.

Cannot find the data you need?

Your choices are as follows:

Old and battered but these volumes of the famous TPRC data books are a key reference for thermophysical properties data. Now these data and more are available online from CINDAS via the evitherm data scheme.

Provide your own data!

You have made thermophysical property measurements in your own laboratory or taken data from the literature that are not available in a database.

Data mask for entry of thermal property data into the evitherm database.

In either case you can send these data directly to evitherm. The data will be reviewed and, if accepted, published in the evitherm database. This is the quickest way to make data available to the public in advance, in parallel, or instead of publishing in a scientific or other journal. To enter your data please download the evitherm data mask (MS Excel spreadsheet, 200 KB).