S550QL STEEL PLATE

Quenched and tempered steel plate S550QL which is in EN 10025-6 technical delivery conditions for flat products of high yield strength structural steels in QT delivery condition.The steel making process of high strength steel plate S550QL shall be in accordance with EN 10025-1.If specified at the time of order the steel making process shall be reported to the purchaser.The low temperature impacting test for high strength S550QL,S550QL steel plate,S550QL steel sheet should be done at minus 40 centigrade.Now Xinsteel can offer the maximum thickness for high tension steel plate S550QL reach to 350mm with good steel property.

Technical Requirements & Additional Services for S550QL steel plate:
♦ Low temperature impacting test
♦ Quenching and Tempering heat treatment
♦ Ultrasonic test under EN 10160,ASTM A435,A577,A578
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands 

►Mechnical property for S550QL steel plate:

Thickness (mm)
S550QL	≥ 3 ≤ 50	> 50 ≤ 100	> 100
Yield strength (≥Mpa)	550	530	490
Tensile strength (Mpa)	640-820	640-820	590-770

►Chemical composition for S550QL steel plate (Heat Analysis Max%)

Main chemical elements composition of S550QL steel plate
C	Si	Mn	P	S	N	B	Cr
0.20	0.80	1.70	0.020	0.010	0.015	0.005	1.50
Cu	Mo	Nb	Ni	Ti	V	Zr
0.50	0.70	0.06	2.0	0.05	0.12	0.15