EN 10028:3 P355NH Pressure Vessel Steel Plate

Review

Description

EN 10028:3 P355NH

EN 10028:3 P355NH Pressure Vessel Steel Plate Specifications

The specification EN 10028:3 covers a range of weldable fine grain steels supplied in the normalised condition and intended for pressure purposes. EN 10028:3 P355NH is steel for pressure purposes (P) with minimum yield strength of 355 MPa (355) which has specified elevated temperature properties (NH).

Chemical Requirements

(cast analysis, % by mass, maximum permitted unless indicated otherwise)

C	Si	Mn	P	S	Al TOTAL	N	CR
0.18	0.50	1.10-1.70	0.025	0.015	0.020 min	0.012	0.30
CU	MO	NB	NI	TI	V	NB+TI+V
0.30	0.08	0.05	0.50	0.03	0.10	0.12

Tensile Requirements

PRODUCT THICKNESS	YIELD STRENGTH MPA	TENSILE STRENGTH MPA	ELONGATION A%
up to 16 mm	355 min	490 to 630	22 min
16 to 40 mm	345 min	490 to 630	22 min
over40 to 60 mm	335 min	490 to 630	22 min
over 60 to 100 mm	315 min	470 to 610	21 min
over100 to 150 mm	305 min	460 to 600	21 min
over150 to 250 mm	295 min	450 to 590	21 min

Impact test values, average of three at temperature specified below

	-20°C	0°C	+20°C
Transverse	30 J min	40 J min	50 J min
Longitudinal	45 J min	65 J min	75 J min

ELEVATED TEMPERATURE PROPERTIES

THICKNESS	50°C	100°C	150°C	200°C	250°C	300°C	350°C	400°C
up to 16 mm	343	323	299	275	252	232	214	202
16 to 40 mm	334	314	291	267	245	225	208	196
over 40 to 60 mm	324	305	282	259	238	219	202	190
over 60 to 100 mm	305	287	265	244	224	206	190	179
over 100 to 150 mm	295	277	257	236	216	199	184	173
over 150 to 250 mm	285	268	249	228	209	192	178	167