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Finally, an antique standard of steel semi-finished products!

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Abstract

In ancient metallurgical contexts, steel enjoys a special prestige thanks to his mechanical behaviors: especially its hardness which can be increased by quenching. However, if one relies on discoveries of protohistoric and antique semi-products, steel remains a rare material (Dillmann et al., 2011). Certainly, there are heterogeneous products in which ferritic and steel zones coexist, but the homogeneous masses entirely composed of steel remain relatively exceptional. Yet the study of some antique objects clearly shows that both production and trade of pure steel occur (Berranger et al. 2011, Pagès et al. 2011, Pagès 2014, Berranger et al. 2017, Dillmann et al. 2017). Moreover, ancient authors such as Pliny the Elder distinguish the materials using the terms heterogeneous iron and pure steel. The study of two antique semi -products, with identical morphology and structure, provides new perspectives on this question. Fully steeled to 0.7 / 0.9% carbon, they are bars 15 cm long and 3 x 1.5 cm section. They have been discovered in the Roman military camp Strebersdorf (Burgenland, Autriche, Groh 2009) and in the late-antiquity fortified hilltop city of Roc de Pampelune (Argelliers, Hérault, France, Pagès et al. 2005). More than 5 centuries and 1500 km separate these similar discoveries. How to interpret this? That's the question we want to answer by using the results of metallographic and LA-ICP-MS analyses and confronting them with the facts recounted by the ancient authors as Pliny the Elder.
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Dates and versions

cea-02328190 , version 1 (23-10-2019)

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  • HAL Id : cea-02328190 , version 1

Cite

Gaspard Pagès, Philippe Dillmann, Enrique Vega, Laurent Schneider, Stefan Groh, et al.. Finally, an antique standard of steel semi-finished products!. Archaeometallurgy in Europe 2019, Jun 2019, Miskolc, Hungary. ⟨cea-02328190⟩
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