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POSITIVE MATERIAL INVESTIGATION

PMI OES

This method is the analysis of a metallic alloy to establish composition by reading the quantities by percentage of its constituent elements. OES instruments are larger in size than XRF equipment, however it is portable so we are able to use OES both on site and at our premises. Preperation of the test area is crucial in obtaining accurate readings. The test area must be ground flat and to a specific finish which is done by our operators prior to testing. The reason for the flat area is to eliminate oxygen contamination as the equipment uses an argon shield to improve accuracy. All our operators have completed a training course covering the required modules. One of the key reasons OES technology is chosen over the XRF method is because of the superiority of measuring non metallic and light alloy element such as carbon and aluminium, which commonly needs to be measured in the identification of carbon critical stainless steels and aluminium based alloys. The OES equipment is capable of measuring and displaying as a percentage the following 21 metallic elements.

 

C, Si, Mn, P, S, Cr, Mo, Ni, Al, Co, Cu, Nb, Ti, V, W, Pb, Sn, Mg, As, Zr, Bi, Ca, Ce, B, Zn, La, Fe.

 

USES

  • Measuring Bridges

  • Steel Structures

  • Moving parts

PMI XRF

 

Positive Material Identification (PMI) is the analysis of a metallic alloy to establish composition by reading the quantities, by percentage, of its constituent elements. The more common method for PMI is X-ray fluorescence (XRF). XRF is a commonly used, accurate, fast, non-destructive technique for testing all metal components with appropriate alloy composition such as pipe fittings, bolting, valves and also welds. The equipment is easily portable and is ideal for use both on site and at your premises with all our technicians having completed a training course covering routine use for grade identification and element analysis, daily precision checks, safety precautions, routine care and maintenance. The XRF equipment is capable of measuring and displaying as a percentage the following 21 metallic elements.

 

Ti, V, Cr, Mn, Fe, Co, Ni, Cu, Nb, Mo, W, Zn, Se, Zr, Ag, Sn, Hf, Ta, Au, Pb, and Bi.

 

USES

  • Measuring Bridges

  • Steel Structures

  • Moving parts

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