Archives

Selection of Compression Mounting Compounds

Selection of the correct compression mounting compounds can make all the difference in achieving high quality preparation. Edge retention compounds such as EpoMet have excellent hardness and shrinkage properties, and are best for hard materials where edge inspection is required as well as for resistance to strong chemical etches. Phenocure is the lowest cost option, […]

Hardness Conversions

Need to produce Brinell hardness values with your Rockwell tester? Hardness conversions make it possible. Depending on application and availability, different hardness test equipment is used, each presenting their results in a different hardness-scale (e.g., Vickers, Rockwell or Brinell). Too often there is a need to present the hardness results in a different scale than […]

Rockwell Hardness Test Indent Spacing

Do you ever wonder how far to space indents when performing Rockwell hardness tests? Indent spacing is a common concern during specimen testing or coupon block verification. Your results can be adversely influenced by spacing indents too close to one another or to the edge of the material. The accepted criteria are that the distance […]

Buehler Focuses on Education Around the Globe

Buehler education is sponsoring a free webinar on the “Right” and “Wrong” Ways of Material Preparation. This webinar is aimed at Metallographers, Material testers, Material engineers and others who carry out sample preparation for different industries. The seminar will address common preparation problems. It will also highlight various key parameters to consider in sectioning, mounting […]

Testing the Hardness of a Welded Joint

Testing the hardness of a welded joint is well documented in standards like the ISO 9015 and the ISO 15614. These standards describe test loads, number of indents for parent material, heat effected zone (HAZ) and weld as well as the distances between each indent and the depth below the surface of the welded joint. […]