As the flagship grade in RINA's certification system, F620 redefines marine steel capabilities with 620MPa yield strength, achieved through advanced metallurgical engineering and precision thermo-mechanical processing for ultra-demanding maritime applications.
RINA F620 extra high Strength Chemical Composition in Tempering and Quenching
|
Element |
RINA F620 Max % |
Element |
RINA F620 Max % |
|
C |
0.18 |
Ni |
0.80 |
|
Mn |
1.60 |
Mo |
0.08 |
|
Si |
0.10-0.55 |
Al |
0.020 min |
|
S |
0.025 |
Nb |
0.20-0.05 |
|
P |
0.025 |
V |
0.05-0.10 |
|
Cu |
0.35 |
Ti |
0.0007-0.05 |
|
Cr |
0.20 |
N |
0.009 |
Crack Sensitivity: Pcm = (C+Si/30+Mn/20+Cu/20+Ni/60+Cr/20+Mo/15+V/10+5B)%
Carbon Equivalent: Ceq = 【C+Mn/6+(Cr+Mo+V)/5+(Ni+Cu)/15】%
RINA F620 extra high strength property in Tempering and Quenching
|
Grade |
Thickness |
Yield Strength |
Tensile Strength |
Elongation |
Impact Energy |
|
(mm) |
MPa (min) |
MPa |
% (min) |
(KV J) (min) |
|
|
|
|
|
|
-60 degree |
|
|
RINA F620 |
8-260 |
620 |
720-890 |
15 |
41J |
Application
RINA Grade F620 Shipbuilding steel plate is mainly used to Shipbuilding Project and Ocean Offshore Structural Project.
RINA Grade F620 Shipbuilding Steel Plate Other Name
RINA Grade F620 Shipbuilding steel plate,RINA Grade F620 Ship Steel plate ,RINA Grade F620 Marine Steel plate , RINA Grade F620 Steel Plate .
Additional Condition
UT(Ultrasonic examination), AR(As Hot Rolled only), TMCP(Thermal Mechanical Control Processing), N(Normalized), Q+T(Quenched and Tempered),Z Direction Test(Z15,Z25,Z35), Charpy V-Notch Impact Test, The Third Party Test (such as SGS Test), Coated or Shot Blasting and Painting.
