S550QL1 STEEL PLATE

High yield strength steel plate S550QL1 under EN 10025-6 owned the minimum yield strength at 550 Mpa and tensile strength within 640-820 Mpa.The necessary technical requirement when rolling S550QL1,S550QL1 steel plate,S550QL1 steel sheet contains quenching and tempering heat treatment,low temperature impacting test under minus 60 centigrade.The additional technical has Ultrasonic examination.Xinsteel roll structural steel plate S550QL1 completely under steel standard EN 10025-6 and would issue the original mill test certificate under format EN 10204 3.1.

Technical Requirements & Additional Services for S550QL1 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 S550QL1 steel plate:

Thickness (mm)
S550QL1	≥ 3 ≤ 50	> 50 ≤ 100	> 100
Yield strength (≥Mpa)	550	530	490
Tensile strength (Mpa)	640-820	640-820	590-770

►Chemical composition for S550QL1 steel plate (Heat Analysis Max%)

Main chemical elements composition of S550QL1 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