These steels feature guaranteed fi ne-grain structure and low carbon equivalent. Mechanical properties of these plates are guaranteed at
high temperatures (up to 400 °C) – yield strength Rp0,2 as well as at low temperatures (down to -50 °C) – impact energy KV; therefore,
they can be used for constructions of more demanding pressure vessels working under high as well as low temperatures.

Designation	Min. Yield Strength ReH 1) [MPa]	Min. Yield Strength RpO,2 2) [MPa]	Tensile Strength Rm [MPa]	Min. Elongation [%]	Min. Impact Energy KV [°C/J] – transverse	CEV max. 4)	Max. Thickness [mm]	Dimension Table No.
P275NH	275	179	390-510	24	-20/30	0,40	805)	table 1
P275NL1	275	179	390-510	24	-40/27	0,40	805)	table 1
P275NL2	275	179	390-510	24	-50/27	0,40	805)	table 1
P355N	355	-	490-630	22	-20/30	0,43	805)	table 1
P355NH	355	232	490-630	22	-20/30	0,43	805)	table 1
P355NL1	355	232	490-630	22	-40/27	0,43	805)	table 1
P355NL2	355	232	490-630	22	-50/27	0,43	805)	table 1
P460NH	460	300	570-720	17	-20/30	0,53	80	table 2
P460NL1	460	300	570-720	17	-40/27	0,53	80	table 2
P460NL2	460	300	570-720	17	-50/27	0,53	80	table 2

1) Valid for thickness up to 16 mm, for higher thickness refer to the standard
2) Testing on agreement; valid for temperature 300 °C and thickness up to 16 mm, for other temperatures under standard or higher thickness refer
to the standard
3) For other temperatures under standard refer to the standard
4) On agreement; CEV =   ; valid for thickness up to 60 mm, for higher thickness refer to the standard
5) Higher thickness up to 100 mm on agreement

EQUIVALENT DESIGNATION