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CROSS Safety Report

Steel fabricators substituting S275/S355 steel for S235 steel

Report ID: 758 Published: 1 January 2019 Region: CROSS-UK

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Overview

A reporter has been asked many times by fabricators if they can use grade S235 steel in lieu of S275 or S355.

Key Learning Outcomes

For construction professionals and steel fabricators:

  • Substitution of construction elements for a lower grade material, should not be made without approval from the design engineer

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CROSS report 634 and report 740 refer to the use of grade S235 steel in lieu of S275 or S355. A reporter has been asked many times by fabricators if they can make this substitution, usually on cost grounds as there is a significant saving in using S235. Most do not appreciate the distinction, and this applies to some manufacturers too.

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