TÔLE D'ACIER MARIN S420G2+QT
S420G2+QT MARINE STEEL SHEET 3

When it comes to marine applications, the choice of material is crucial for ensuring the safety and durability of structures. S420G2+QT marine steel sheet is a high-strength steel that is specifically designed for use in offshore and marine environments.

EN10225 S420G2+QT Steel Chemical Composition   

GradeChemical Composition
S420G2+QTL'élément Max (%)
CSiMnPSNbVTiAlCrNimoisCuN
0.140.15
|
0.55
1.650.0200.0070.0400.0800.0250.015
|
0.055
0.250.700.250.300.010

EN10225 S420G2+ QT Steel Mechanical Property

GradePropriété mécanique
 S420G2+QTLimite d'élasticité
mm
Min(Mpa)
Résistance à la traction
mm
Min(Mpa)
 Élongation
Min,%
 

40

40

100
≤16
16

40

40

63

63

80

80

100
 19
500-660480-640420400390380380

Advantages of S420G2+QT Marine Steel Sheet

S420G2+QT marine steel sheet offers a range of advantages that make it an ideal choice for marine applications. Some of the key advantages include:

  • High Strength: S420G2+QT steel has a minimum yield strength of 420 MPa, making it suitable for use in demanding marine environments.
  • Excellent Weldability: This steel grade can be easily welded using conventional methods, allowing for efficient fabrication and construction.
  • Good Toughness: S420G2+QT steel exhibits good toughness properties, which are essential for withstanding impact and fatigue loads in marine structures.
  • Corrosion Resistance: The steel is designed to resist corrosion in marine environments, ensuring long-term durability and performance.

Characteristics of S420G2+QT Marine Steel Sheet

In addition to its advantages, S420G2+QT marine steel sheet also possesses a range of characteristics that set it apart from other materials. Some of the key characteristics include:

  • High Ductility: S420G2+QT steel offers high ductility, allowing for easy forming and shaping during fabrication processes.
  • Low Carbon Equivalent: The steel has a low carbon equivalent, which helps to reduce the risk of hydrogen-induced cracking during welding.
  • Impact Resistance: S420G2+QT steel is designed to withstand impact loads, making it suitable for use in offshore structures subject to harsh environmental conditions.
  • Good Fatigue Resistance: The steel exhibits good fatigue resistance, ensuring long-term performance in marine applications where cyclic loading is present.

Applications and Uses of S420G2+QT Marine Steel Sheet

S420G2+QT marine steel sheet is commonly used in a variety of marine applications due to its high strength and durability. Some of the key applications and uses include:

  • Offshore Platforms: The steel is often used in the construction of offshore platforms, where it provides structural support and stability in harsh marine environments.
  • Shipbuilding: S420G2+QT steel is used in the construction of ships and marine vessels, where its high strength and corrosion resistance are essential for ensuring safety and longevity.
  • Offshore Wind Farms: The steel is also used in the construction of offshore wind farms, where it provides support for wind turbine structures in challenging marine conditions.
  • Subsea Pipelines: S420G2+QT steel is utilized in the fabrication of subsea pipelines, where its corrosion resistance and high toughness properties are critical for withstanding underwater conditions.

Questions fréquemment posées

1. What is the minimum yield strength of S420G2+QT marine steel sheet?

The minimum yield strength of S420G2+QT steel is 420 MPa, making it suitable for use in demanding marine environments.

2. What are some key advantages of S420G2+QT marine steel sheet?

Some key advantages of S420G2+QT steel include high strength, excellent weldability, good toughness, and corrosion resistance.

3. Where is S420G2+QT marine steel sheet commonly used?

S420G2+QT steel is commonly used in offshore platforms, shipbuilding, offshore wind farms, and subsea pipelines due to its high strength and durability.

4. What are some key characteristics of S420G2+QT marine steel sheet?

Some key characteristics of S420G2+QT steel include high ductility, low carbon equivalent, impact resistance, and good fatigue resistance.

5. How does S420G2+QT steel compare to other materials in marine applications?

S420G2+QT steel offers a unique combination of high strength, toughness, and corrosion resistance, making it a preferred choice for marine structures.

In conclusion, S420G2+QT marine steel sheet is a versatile and reliable material that is well-suited for a wide range of marine applications. Its high strength, excellent weldability, and corrosion resistance make it an ideal choice for offshore platforms, shipbuilding, offshore wind farms, and subsea pipelines. By understanding the advantages, characteristics, applications, and uses of S420G2+QT steel, engineers and designers can make informed decisions when selecting materials for marine projects.

Pourquoi choisir Gnee Steel

Si vous souhaitez trouver un fabricant de produits sidérurgiques fiable, Gnee sera votre meilleur choix. 15 ans d'expérience dans la fabrication de produits en acier, certifiés par la société de classification, CE, ISO et SGS. Et nous garantissons les normes de sécurité et de qualité les plus élevées. Nous remplissons toutes les exigences des sociétés de classification réputées.
certificat

De plus, notre acier a été exporté avec succès vers plus de 60 pays tels que l'Allemagne, la Corée du Sud, les États-Unis, le Mexique et l'Argentine. De nombreux clients réguliers viennent visiter notre entreprise et notre usine et passent plusieurs commandes.

Affichage de l'entreprise partenaire
Quels services Gnee fournit-il ?
Tests de mesure et de qualité3
  • Contrôle dimensionnel: Longueur, largeur, diamètre ; Épaisseur, rectitude ; Planéité, profil ;
  • Inspection des surfaces: Inspection visuelle; Tests de rugosité ; Mesure de l'épaisseur du revêtement ;
  • Tests de composition: Analyse élémentaire interstitielle - C,S,P, Si ; Vérification de la qualité des alliages ; Évaluation de l'inclusion ;
  • Tests mécaniques: Résistance à la traction, limite d'élasticité ; Robustesse, ductilité ; Essais de dureté ;
  • Détection des défauts: Tests ultrasoniques et radiographiques ; Tests de particules magnétiques et de ressuage ;
  • Documentation: Rapports d'inspection; Certificats d'essais ; Traçabilité des matières
Usinage-et-finition1
Usinage-et-finition3
Usinage-et-finition2
  • Usinage CNC - tournage, fraisage, perçage
  • Traitements de surface comme le polissage
  • Traitements thermiques - trempe, recuit
  • Revêtement humide/en poudre
service-de-coupe3
service-de-coupe1
service de coupe2
  • Découpe au jet d'eau
  • Découpe au laser
  • Découpe plasma
  • Cisaillement/poinçonnage
Moulage et fabrication3
Moulage et fabrication1
Moulage et fabrication2
  • Roulant
  • Freinage par presse
  • Cintrage de plaques - concave et convexe
  • Cintrage de profils - fabrication sur mesure selon les dessins
Tests et inspection3
Tests et inspection1
Tests et inspection2
  • Analyse chimique
  • Essais mécaniques
  • Examination non destructive
  • Tests par ultrasons, radiographie

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