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Chemical Analysis
Rapidly determine chemical compositions
Optical Emission Spectroscopy (OES) is a rapid method for determining the chemical composition of almost any metallic material such as carbon steels, cast irons, stainless steels, duplex and super duplex stainless steels, nickel, titanium and aluminum alloys, copper alloys and many more.
Optical emission spectrometry involves applying electrical energy in the form of spark generated between an electrode and a metal sample, whereby the vaporized atoms are brought to a high energy state within a so-called “discharge plasma”. These excited atoms and ions in the discharge plasma create a unique emission spectrum specific to each element, as shown at right. Thus, a single element generates numerous characteristic emission spectral lines. The results of the analysis are given as a percentage breakdown of the constituent elements.
Testing
Depending on the size of the component this analysis can be non-destructive as it will only leave a small size spark on the surface. If however, the part needs cutting our workshop engineers will machine a reasonable size specimen before testing.
In case a non-destructive technique is required, AMS offers its clients Positive Material Identification (PMI) testing. PMI testing using XRF (X-Ray Fluorescence) is a method that delivers rapid and accurate results for all material identification needs. Materials that can be identified are stainless steels, duplex stainless steels, tungsten and vanadium steels, aluminum, copper and nickel alloys. PMI is an identical technique when material sorting is required.
**please refer to our UKAS schedule for more info about which alloys AMS can analyse under UKAS scope.
