Material analysis / chemical composition

Occasions in which a material analysis is performed are, for example, during delivery inspections, prior to the manufacture of products, prior to welding of materials, for analysis of materials in older structures and in connection with breakdown and damage examinations.

We have the opportunity to analyze the chemical composition of all types of steel, such as low-alloy and stainless steels, nickel, copper and aluminum alloys. 

The OES is used for:

• Checking the quality of the material
• Meets the chemical composition requirements according to standard/certificate
• Examine unknown materials
• Examine weldability
• Examine corrosion resistance
• Curing ability

Verification of standard/certificate
We have a large number of known certified reference materials (CRM) that verify the obtained analysis results. The result is compared against a standard or a certificate to see if the material meets special requirements. The result can also be used as a basis for making an assessment of weldability, or for finding out whether the material is appropriate.

The OES analyzes a wide range of elements and covers a large concentration range with very high accuracy and precision as well as low detection limits – what the OES can determine depends on the material being tested. The OES produces the levels of the constituent elements, such as carbon, silicon, chromium and nickel.

After preparation, the sample is subjected to a spark discharge where the heat causes the metal to evaporate. The electrons in the atoms are excited and emit light in different wavelengths. Then the contents of the various elements can be determined.

The type of samples that can be tested with OES include samples from the melt in primary and secondary metal production and in pipes, bolts, rods, sheet metal, the metal working industry, and more.