Q390C

High strength low alloy structural steel plate Q390C owned the minimum yield point above 390 Mpa for the thickness equal or above 16mm,and tensile strength shall be within 490-650 Mpa.Normlised Q390C is mainly for heavy steel plate for improve the steel property when rolling.

Technical Requirements & Additional Services for Q390C steel plate:
♦ Low temperature impacting test
♦ 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 Q390C low alloy structural steel:

Thickness (mm)
Q390C	≤ 16	> 16 ≤ 35	> 35 ≤ 50	>50
Yield strength (≥Mpa)	390	370	350	330
Tensile strength (Mpa)	490-650

►Chemical composition for Q390C low alloy structural steel (Heat Analysis Max%)

Main chemical elements composition of Q390C
C	Si	Mn	P	S	V	Nb	Ti	Al (min.)	Cr	Ni
0.20	0.55	1.00-1.60	0.035	0.035	0.02-0.20	0.015-0.060	0.02-0.20	0.015	0.30	0.70