Application-ready thermal data for real materials and interfaces
Forsta Varme helps engineering teams measure, interpret, and use thermal property data for materials that do not behave like simple homogeneous solids.
We combine standard thermophysical testing, advanced measurement methods, and physics-based interpretation to help you choose the right data for design, simulation, qualification, and material development.
Questions we help answer
- Which thermal property value should I use in my simulation?
- Why do different test methods give different results?
- How will this material perform under realistic operating conditions?
- Is the bottleneck the material, interface, structure, or test assumption?
WHAT WE HELP YOU DO
Choose the right measurement, understand the result, and use it with confidence.
Choose the right standard
Not every material belongs in the same instrument. We help determine which test method is best for your project from our suite of expert operated measurement instruments.
- Thermal conductivity, diffusivity, and resistance
- Specific heat capacity
- Thermal expansion and degradation
- Electrical conductivity
Resolve conflicting thermal data
When supplier data, internal measurements, and simulation results disagree, we determine whether the issue is method selection, material property, or real application-specific behaviour.
- Understand measurement discrepancies
Build Better Simulation Inputs
Translate thermophysical measurements in simulation ready inputs with experiment-in-the-loop characterization.
- Improve model correlation
- Measure parts in the format they’re produced
- Build model-ready thermal data packages for CAE
Develop better thermal management materials
For R&D teams, we support formulation, filler loading, percolation effects, aging, degradation, cycling, and structure-property relationships.
- Balance thermal and mechanical performance
- Optimize long term performance with accelerated aging methods
Measure application performance
We characterize materials in forms that better represent how they are actually used, including compressed interfaces, layered assemblies, filled polymers, potted structures, assembled cells, and components.
- Separate bulk material behaviour from assembly effects
- Characterize performance under realistic compression, geometry, and temperature conditions
Compare candidate materials
We help teams rank materials using consistent test plans, realistic conditions, and interpretation that explains why materials perform differently.
- Long term quality and comparison projects
- Rank materials using consistent, application-relevant test conditions
Choose the path that matches your project
I need a standard thermal property measurement.
We select and perform the appropriate thermophysical test based on material type, temperature range, geometry, expected conductivity, and intended use. Next step: Get a Testing Quote
I have conflicting thermal data.
We determine whether disagreement is caused by method selection, contact resistance, anisotropy, heterogeneity, or real material behavior. Next step: Discuss Your Data
I need better simulation inputs.
We help move from generic or supplier-provided values to application-relevant thermal inputs. Next step: Improve My Model Inputs
I am developing a thermal management material.
We support formulation, comparison, processing analysis, heterogeneity detection, and performance-driver identification. Next step: Discuss My Material
I need to understand an interface or stack-up.
We separate bulk material resistance from interface losses and identify thermal bottlenecks. Next step: Evaluate an Interface
I need to characterize a complex composite material
We characterize materials where heat does not flow uniformly or equally in all directions. Next step: Analyze Thermal Structure
INDUSTRIES AND APPLICATIONS
Where Our Capabilities Are Used
PRIORITY APPLICATION
Batteries and Mission-Critical Mobile Energy Systems
Forsta Varme combines thermal measurements of intact cells with simulation to determine the internal properties that control the cell and pack temperatures. Our experiment –in-the-loop approach accounts for shell, interface, heat loss, contact resistance, and operating state to produce interpretable thermal data and digital assets for battery design, qualification, BTMS development, and simulation
Why standard battery thermal inputs fall short
Component by component measurement is difficult, slow, and not representative of real cells
Shell, contact resistance, and boundaries distort internal property measurements
Characterize intact cells
Receive usable digital assets, not just a table a of numbers
Unmatched insight
<1% error
in core property characterization
Simulation ready
Receive usable digital assets, not just a table a of numbers
PRIORITY APPLICATION
Polymers, Composites, Gap Fillers, and TIMs
Highly filled polymer systems can violate the assumptions behind standard thermal conductivity measurements. Transient and steady-state methods may legitimately disagree because the material contains structured filler networks, preferred heat paths, and thermal heterogeneity.
Standard methods disagree on the same material
What standard methods miss
- Transient methods assume thermal homogeneity when
- Steady-state methods miss crucial transient performance
- High particle loading creates thermal heterogeneity
3 methods. 3 answers.
DTC turns disagreement into insight
What DTC resolves
- Measures transient, steady-state, and intermediate regimes.
- Quantifies actual performance as heat probes heterogeneous paths.
- Removes ambiguity in material selection, simulation, and formulation.
Other industries where our solutions help
Electronics and compute
Support for TIM selection, encapsulants, PCB and package-level heat-flow uncertainty, contact resistance losses, and reliability-related thermal behavior.
- TIM and gap filler selection
- Package and assembly effects
- Aging and reliability impacts
Thermal interface materials
Characterize bulk and interface behavior in materials designed to move heat across imperfect surfaces and stack-ups.
- Bulk vs. application performance
- Compression-dependent behavior
- Transient vs. steady-state performance
Aerospace materials
Thermal characterization for lightweight, high-performance materials where confidence in thermal behavior and reliability matters.
- High temperature composite characterization
- Thermal expansion and degradation
- Simulation-ready property data
Thermal energy storage and transfer
Characterize temperature-dependent thermal behavior, specific heat, diffusivity, cycling effects, and storage system simulation inputs.
- Temperature-dependent conductivity
- Specific heat capacity
- Cycling and degradation effects
STANDARD TESTING LABORATORY TESTING SERVICES
Standard Methods. Advanced Interpretation.
When standard methods are sufficient, we provide reliable property data. When they are not enough, we combine advanced measurement techniques with physics-based interpretation.
Representative capabilities
Transient Plane source
Thermogravimetric analysis
Electrical conductivity
Transient line source
Dilatometry
Guarded heat flow meter
Differential scanning calorimetry
Laser flash analysis
On site sample prep
Transient hot wire
Heat flow meter
Inert atmosphere boxes
PROBLEMS WE’VE SOLVED
Come to Us When the Thermal Data Does Not Tell the Whole Story
“My supplier gave me a thermal conductivity value, but my model is still wrong.”
We determine whether the issue is method selection, contact resistance, anisotropy, heterogeneity, temperature dependence, or oversimplified material inputs.
“Different thermal property test methods give different answers.”
We compare measurement regimes and determine whether the disagreement is a measurement artifact or a real feature of the material.
“My material is highly filled, but the measured conductivity does not explain performance.”
We evaluate dynamic behavior, preferred pathways, percolation effects, and heterogeneity that a single value may not capture.
“I need data for simulation, not just a report.”
We define the test plan, interpret results, and translate measurements into appropriate thermal model inputs.
“My use case needs thermal property data for fresh and aged materials.”
We prepare test plans with custom aging and degradation measurements, so you know how your system behaves at launch, and in the future.
“I need to qualify or compare materials quickly, on an ongoing basis.”
We perform standardized testing, compare candidate materials, and include expedited timelines and reduced rates for long term quality and comparison projects.
HOW WE WORK
From Material Uncertainty to Actionable Data Driven Insight
Tell us your problem or requirements
Send material type, application, geometry, temperature range, expected property range, and why the data matters.
We recommend a strategy
We determine whether the project needs standard testing, advanced measurement, TCR analysis, custom modeling, or consulting.
We Measure and Interpret
We analyze results with attention to heat-transfer physics, method assumptions, uncertainty, structure, and application relevance.
You get data
You receive data, interpretation, and recommendations for design, simulation, qualification, supplier decisions, or R&D.