What are the proof strength requirement of P460NH at elevated temperature?

P460NH under EN10028-3 weldable fine grain steel standard is alloy special steel. It is always delivered in normalized condition.
The proof strength of P460NH steel at elevated temperatures changes according to EN10028-3 standard as follows.

Thickness	Minimum proof strength
t	MPa
-	at a temperature in of
mm	50	100	150	200	250	300	350	400
≤16	445	419	388	356	326	300	278	261
16<t≤40	430	405	375	345	316	290	269	253
40<t≤60	416	391	362	333	305	281	260	244
60<t≤100	387	364	337	310	284	261	242	227
100<t≤250	as agreed	as agreed	as agreed	as agreed	as agreed	as agreed	as agreed	as agreed

The pressure vessel steel grade P460NH owns higher tensile and yield strength. Boiler steel plates P460NH tensile strength is at 570_720 Mpa for thickness belows 60mm,even maximum 730 Mpa is OK for the product thicknesses up to 16 millimeters. For P460NH steel plate price from factory, welcome to contact us.