1.Q345R (R-HIC) steel plate Chemical Composition:
C <= 0.20
Si: 0.20-0.55
Si: 0.20-0.60
Mn: 1.20-1.36
Al >= 0.020
Ca: 0.0015-0.0030
O <= 0.004
CE <= 0.45
P <= 0.015
S <= 0.003
2.Q345R (R-HIC) steel plate process flow
(1) Raw materials (scrap steel, pig iron and molten iron)
(2) Electric furnace (100-ton electric arc furnace forging), converter
(3) LF furnace molten steel refining treatment
(4) VD or VOD furnace molten steel vacuum treatment
(5) Die casting (various bonded die casting lines) or continuous casting (large slab continuous casting machine); (one ingot remelting treatment 50-ton slab type electric slag furnace)
(6) Heating (continuous furnace and soaking furnace)
(7) Steel plate rolling (4100 and 4200mm rolling mill)
(8) Steel plate heat treatment (normalizing and tempering)
(9) Q345R (R-HIC) steel plate cutting inspection
(10) Q345R (R-HIC) storage
3.Q345R (R-HIC) mechanical properties are as follows:
Tensile strength: 490-610 MPa
Yield strength: 320 MPa
Impact temperature: -30℃
Elongation: 20%
Thickness properties: 35%
Q345R (R-HIC) stock sizes and cut-to-order, rolled, and deep processing services.
