S700 high yield structural steel plate for offshore and marine industry

Product Details:
Place of Origin: China
Brand Name: VANFORGE
Certification: ISO9001:2015, ABS, BV, CCS, DNV GL, NKK
Payment & Shipping Terms:
Minimum Order Quantity: 5 metric tons
Price: Negotiable
Packaging Details: Standard seaworthy packing for export
Delivery Time: 15 days
Payment Terms: L/C, T/T
Supply Ability: 3000 metric tons per month

Detail Information

Material: Low Alloy Steel Process: Hot Rolled
Shape: Flat Plate Surface Treatment: Plain And Smooth
Length: Up To 12000mm
High Light:

hr steel plate


hardened steel plate

Product Description


A structural steel developed for use in demanding load-bearing structures within the Offshore and Marine Industry.

S700 steel exceeds the requirements of S690QL steel, EN 10025-6. S700 steel can be ordered with dual steel grades certificate, where the additional steel grade is defined and approved by one of the Classification Societies listed below.

The dual certification offers You the benefits of excellent mechanical properties, extra tight tolerances, formability and consistency of VANFORGE


Classification society

- American Bureau of Shipping AB EQ70, 4.8 to 130 mm thickness.

- DNV - GL NV E690, VL E690, 6 to 80 mm thickness.

- Lloyds Register LR EH 69, 8 to 80 mm thickness.


Dimension Range

S700 steel is available in plate thicknesses of 4 – 130 mm and available in widths up to 3350 mm and lengths up to 14630 mm depending on thickness.


Mechanical Properties



Yield strength1) Rp0.2

(min MPa)

Tensile strength (1) Rm


Elongation A5

(min %)

4.0 - 130.0 700 780 - 930 14

(1) For transverse test pieces according to EN 10 025.


Impact Properties


Min transverse test, impact energy,

Charpy V 10x10 mm tests specimens (1)

S700 steel 69 J/-40 °C

(1) Unless otherwise agreed, only transverse impact testing.


Additional Options for Mechanical properties:

Option 1 - Min guaranteed impact energy (J) for transverse testing Charpy V 10x10 mm tests specimens 50 J/ -60 °C.

Option 2 - Improved deformation properties perpendicular to the surface. Through- thickness tensile testing according to EN 10 164, Class Z35, Z25 and Z15.


Chemical Composition (ladle analysis), %, max

C Si Mn P S Cr Cu Ni Mo B
0.20 0.10-0.55 1.60 0.015 0.003 0.80 0.30 2.0 0.70 0.005

The steel is grain refined.


Tolerances meet the requirements of EN 10029 Class A, but offers narrower tolerances.


Length and Width

Tolerances conform with EN 10029.



Tolerances according to EN 10 029.



Tolerances according to EN 10029 Class N.


Surface Properties

According to EN 10 163-2 Class A, Subclass 3.


Delivery Conditions

The delivery condition is Q+T (Quenched and Tempered). The plates are delivered with sheared or thermally cut edges.

Untrimmed edges after agreement.


Fabrication and Other Recommendations

Welding, bending and machining.

S700 steel has obtained its mechanical properties by quenching and subsequent tempering. The properties of the delivery condition cannot be retained after exposure to temperatures in excess of 580 °C.

Appropriate health and safety precautions must be taken when welding, cutting, grinding or otherwise working on this product. Grinding, especially of primer coated plates, may produce dust with a high particle concentration.



Plate thickness: 4-100mm

Width: 500mm – 4700mm

Length: On request


Production process

S700 high yield structural steel plate for offshore and marine industry 0


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