1.1.1. Steel vessels

Directive 2014/29/EU of the European Parliament and of the Council of 26 February 2014 on the harmonisation of the laws of the Member States relating to the making available on the market of simple pressure vessels (recast) Text with EEA relevance · European Union

Non-alloy quality steels shall meet the following requirements: they shall be non-effervescent and supplied after normalisation treatment, or in an equivalent state; the content per product of carbon shall be less than 0,25 % and that of sulphur and phosphorus shall each be less than 0,05 %; they shall have the following mechanical properties per product: the maximum tensile strength _(Rm,max) shall be less than 580 N/mm^(2); the elongation after fracture shall be: if test pieces are taken parallel to the direction of rolling: thickness ≥ 3 mm: A ≥ 22 %, thickness < 3 mm: A_(80 mm) ≥ 17 %, if test pieces are taken perpendicular to the direction of rolling: thickness ≥ 3 mm: A ≥ 20 %, thickness < 3 mm: A_(80 mm) ≥ 15 %, the average bending rupture energy KCV for three longitudinal test pieces at minimum working temperature shall not be less than 35 J/cm^(2). Not more than one of the three figures may be less than 35 J/cm^(2), with a minimum of 25 J/cm^(2). In the case of steels intended to be used in the manufacture of vessels the minimum working temperature of which is lower than – 10 °C and the wall thickness of which exceeds 5 mm, this property shall be checked.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-03 · Text as adopted (Official Journal); later amendments are not incorporated in this text.