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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: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 |
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 |