European standard P355Q vessel plate

1. Introduction of European standard P355Q vessel plate:
P355Q European standard vessel plate is a weldable fine grain quenched and tempered steel for pressure equipment. P355Q steel has excellent plasticity, durability, cold bending performance and welding performance.

2. P355Q vessel plate heat treatment delivery status: quenching + tempering.

3. Chemical composition of P355Q steel plate:

≤0.16

≤0.4

≤1.5

≤0.025

≤0.01

≤0.015

≤0.005

≤0.3

≤0.25

≤0.05

≤0.5

≤0.03

≤0.06

Remarks: Nb+Ti+V≤0.05; Cr+Cu+Mo≤0.5

4. Mechanical properties of P355Q steel plate:

Grade	Thickness (mm)	Yield Strength (MPa)	Tensile Strength (MPa)	Elongation A(％)
P355Q	≤50	≥355	490-630	≥22
	50-100	≥335	450-590
	100-150	≥315	450-590

5. Impact properties of P355Q vessel plate:

Grade	Thickness (mm)	Impact energy KV/J
		Test temperature (℃)
		-60	-40	-20	0	20
P355Q	≤150	-	-	27	40	60

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