Q550D STEEL PLATE

Low temperature -20 Centigrade impact test steel materials Q550D steel plate,Q550D steel sheet,Q550D metal plate stock available in China.CEV or CEQ of Q550D steel plate and Q550D steel sheet shall be not above 0.65% for plate thickness equal and belows 50mm.CEV=Ceq=C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15.

Technical Requirements & Additional Services for Q550D steel plate:
♦ Quenching and tempering heat treatment
♦ Low temperature impacting test at -20 ℃
♦ Cutting and welding as per end user’s demands
♦ More striction on some chemical elements contains
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Ultrasonic test under GB/T2970,JB4730,EN 10160,ASTM A435,A577,A578 

►Mechnical property for GB/T 16270 Q550D steel plate:

Thickness(mm)	Yield strength (≥Mpa)	Tensile strength (Mpa)	Elongation in ≥, A %
T≤50	550	640-820	16
50<T≤100	530	640-820
100<T	490	590-770

►Chemical composition for GB/T 16270 Q550D steel plate (Heat Analysis Max%)

 

Main chemical elements composition of GB/T 16270 Q550D steel plate
C	Si	Mn	P	S	Cu	Cr
0.20	0.80	1.70	0.025	0.015	0.50	1.50
Ni	Mo	B	V	Nb	Ti	-
2.00	0.70	0.005	0.12	0.06	0.05	-