Chemical composition and mechanical properties of NVE690 marine high-strength sheet

Introduction of NVE690 steel:
Steels such as NVE690 are enhanced by adding an appropriate amount of alloying elements such as Ni Cr Mo to ensure that the steel plate has good hardenability. Offshore engineering steel can be widely used in the manufacture of main hulls, drilling floors, spud boots, cantilever rails, pile legs, racks and semicircular plates of offshore engineering ships, offshore drilling platforms and oil production platforms.

Delivery status of NVE690: NVE690 grade is generally delivered in a quenched and tempered state.
PS: If the customer has other performance requirements for delivery status, it should be indicated in the contract.

Chemical composition of NVE690 marine high-strength sheet (element composition: wt%):
Carbon C: 0.42 to 0.50, Silicon Si: 0.17 to 0.37, Manganese Mn: 0.70-1.00, Sulfur S: ≤0.035, Phosphorus P: ≤0.035, Chromium Cr: ≤0.25, Nickel Ni: ≤0.25, Copper Cu: ≤0.25
PS: The specific chemical composition should be indicated in the MTC.

Mechanical properties of NVE690 steel sheet:
Tensile strength σb (MPa): ≥620(63)
Yield strength σs (MPa): ≥375(38)
Elongation δ5 (%): ≥15
Area shrinkage ψ (%): ≥40
Impact energy Akv (J): ≥39
Impact toughness value αkv (J/cm2): ≥49(5)
Hardness: unheated ≤241HB annealed steel ≤217HB
PS: The specific mechanical properties should be indicated in the MTC.

NVE690 marine high-strength sheet application and use:
NVE690 steel plate is widely used in the manufacture of the main hull, drilling floor, pile shoe, cantilever track, pile leg, rack and semicircle plate of offshore engineering ships, offshore drilling platforms and oil production platforms.