![]() ![]() Instead the Wallace Collection relied on the experts at NPL to come up with another way of assessing the samples.NPL used a highly calibrated Scanning Electron Microscope to determine the carbon contents of the steel samples provided. To achieve this, they needed to analyse examples of ancient weapons to determine their carbon contents - those with very high carbon were likely made with crucible steel, which was only available in India and Central Asia.Standard metallographic techniques that compare samples with published atlases of alloy microstructures were unable to determine the carbon contents of Viking-age swords. Curators at the collection were researching the steel structure of ancient swords to find out more about where they had come from. ![]()
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