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In order to facilitate everyday archaeometallographic research into archaeological and/or historical objects, a method employing results of metallographic examination and hardness measurements to estimate phosphorus content in iron artifacts is introduced in the paper. Furthermore, phosphorus contents encountered in phosphoric iron that was used deliberately as a special material (for pattern-welding etc.) are discussed here. Despite certain limitations, the proposed method can be used for the estimation of the phosphorus content of archaeological iron examined either currently or in the past.

Estimation of Phosphorus Content in Archaeological Iron Objects by Means of Optical Metallography and Hardness Measurements