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S355G7+N Ship Steel Plate

Steel Standard:EN 10225

Rolling Type:Oil and offshore platform steel plate

Thickness:6mm-300mm

Width:1500mm-4200mm

Length:3000mm-18000mm

Heat Treatment:Normalized

What is S355G7+N Ship Steel Plate?

S355G7+N ship steel plate is a high-strength, low-alloy steel plate designed specifically for use in the construction of ships and offshore structures. It offers excellent weldability and is known for its exceptional durability and resistance to corrosion. This steel plate is often used in the construction of oil rigs, offshore platforms, and various types of marine vessels. Its high tensile strength and toughness make it an ideal choice for applications where reliability and safety are paramount. With its superior properties, S355G7+N ship steel plate is a trusted and reliable option for marine engineering projects.

 

Advantages of S355G7+N Ship Steel Plate

The S355G7+N ship steel plate offers a myriad of advantages that make it a preferred choice for shipbuilding projects:

  • High Strength: The S355G7+N steel plate is known for its high tensile strength, making it ideal for withstanding the harsh conditions at sea.
  • Corrosion Resistance: This steel plate is designed to resist corrosion, ensuring the longevity of the vessel even in saltwater environments.
  • Weldability: The S355G7+N steel plate is easily weldable, allowing for efficient construction and repair work on ships.
  • Toughness: With excellent toughness properties, this steel plate can withstand impact and heavy loads, enhancing the safety of the vessel.

Characteristics of S355G7+N Ship Steel Plate

Understanding the key characteristics of the S355G7+N ship steel plate is essential for making informed decisions in shipbuilding projects:

  • Chemical Composition: The S355G7+N steel plate is primarily composed of carbon, manganese, silicon, and other alloying elements to enhance its mechanical properties.
  • Mechanical Properties: This steel plate exhibits high tensile strength, yield strength, and impact resistance, making it suitable for offshore applications.
  • Heat Treatment: The S355G7+N steel plate undergoes controlled heat treatment processes to achieve the desired mechanical properties and microstructure.
Specification Parameters
Basic Information

S355G7+N Steel plate Chemical Composition

S355G7+N Chemical Composition

Grade

The Element Max (%)

C

Si

Mn

P

S

Al

N

S355G7+N

0.14

0.15-0.55

1.0-0.01

0.02

0.01

0.0055

0.01

Nb

V

Ti

Cu

Cr

Ni

Mo

0.04

0.06

0.025

0.3

0.25

0.5

0.08

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】%

 

S355G7+N Steel plate strength property

S355G7+N high strength property

Grade

Mechanical Property

Charpy V Impact Test

Thickness

Yield

Tensile

Elongation

Degree

Energy 1

Energy 2

S355G7+N

mm

Min Mpa

Mpa

Min  %

-40

J

J

t≤50

355

470-630

22%

50

50

50<t≤63

355

470-630

22%

50

50

63<t≤100

325

490-630

22%

50

50

Note: Energy 1 is transverse impact test, Energy 2 is longitudinal

Service Support
S355G7+N Ship Steel Plate

Technical Requirements & Additional Services for S355G7+N steel plate:

♦ Z TEST (Z15,Z25,Z35)
♦ Low temperature impacting test
♦ Ultrasonic test under EN 10160,ASTM A435,A577,A578
♦ Issued Orginal Mill test certificate under EN 10204 FORMAT 3.1/3.2
♦ Shot blasting and Painting,Cutting and welding as per end user’s demands