Cross Section Analysis
EMS has full metallurgical lab capability which allows metal samples to be cross-sectioned, mounted in phenolic molds, polished, and etched for further analysis. After sample preparation, cross-sections area analyzed for grain size, individual clad layer thickness, and clad boundary zone composition.
Layer Thickness Measurement
In addition to optical measurement, EMS uses a Fischerscope measurement device which accurately determines the thickness of the outer clad layers.
Coefficient of Thermal Expansion (CTE)
On site CTE measurement is possible using a theta Dilatronic dilatometer. Both high (+125 C) and low temperature (-55C) ranges can be measured to provide certification of thermostatic bimetals and clads such as Cu/Invar/Cu.
Differential Thermal Analysis:
This thermoanalytic technique provides data on exothermic and endothermic changes that occur in a metal sample compared to a standard. Solidus and liquidus temperatures are important to understand when designing clad metals for applications such as brazing.
Surface Analysis
For applications requiring specific surface roughnesses, EMS uses Mahr surface profilometers both in process and also as part of engineering development. The MarSurf 400 surface texture measuring unit has a range of +/- 250 microns and can report Ra, Rq, Rz and Rmax. The Mahr SD 26 drive unit has a built in datum plane and is suitable for measuring P-profile and for roughness and waviness measurements.
