Feuille S32750
UNS S32750 sheet is a super duplex stainless steel material with outstanding strength and excellent corrosion resistance. Its high chromium, molybdène, and nitrogen content make it highly resistant to chloride and seawater corrosion.
Because of its superior mechanical and corrosion-resistant properties, UNS S32750 is widely used in oil and gas, génie maritime, traitement chimique, and high-performance industrial systems where standard stainless steels are not sufficient.
- Description
UNS S32750 sheet is a super duplex stainless steel material with very high strength and excellent corrosion resistance. It is commonly known as 2507 super duplex stainless steel and is widely used in harsh industrial environments where ordinary stainless steels cannot provide sufficient performance.
The microstructure of UNS S32750 combines:
- Austenitic stainless steel characteristics
- Ferritic stainless steel characteristics
This dual-phase structure gives the material both high mechanical strength and strong corrosion resistance.
Chemical Composition of UNS S32750
UNS S32750 contains high levels of chromium, molybdène, et azote, which significantly improve corrosion resistance.
| Élément | Contenu (%) | Fonction |
|---|---|---|
| Chrome (Cr) | 24.0 – 26.0 | Améliore la résistance à la corrosion |
| Nickel (Dans) | 6.0 – 8.0 | Enhances toughness and stability |
| Molybdène (Mo) | 3.0 – 5.0 | Improves pitting resistance |
| Azote (N) | 0.24 – 0.32 | Increases strength and corrosion resistance |
| Carbone (C) | ≤ 0.03 | Improves weldability |
| Fer (Fe) | Équilibre | Base metal |
Mechanical Properties of UNS S32750 Sheet
UNS S32750 has much higher strength than standard stainless steel grades such as 304 ou 316.
| Propriété | Performance |
|---|---|
| Résistance à la traction | Très élevé |
| Limite d'élasticité | Approximately twice that of 316 acier inoxydable |
| Dureté | Haut |
| Impact toughness | Bien |
| Fatigue resistance | Excellent |
The material is especially suitable for high-pressure and heavy-load environments.
Corrosion Resistance Performance
One of the main advantages of UNS S32750 is its outstanding corrosion resistance.
Excellent Resistance To:
- Chloride corrosion
- Pitting corrosion
- Crevice corrosion
- Stress corrosion cracking
- Seawater corrosion
This makes it suitable for marine and chemical industries.
Key Features of UNS S32750 Sheet
1. Haute résistance
Super duplex structure provides:
- High load-bearing capability
- Reduced material thickness possibility
- Better structural efficiency
2. Excellente résistance à la corrosion
The high chromium and molybdenum content significantly improves corrosion resistance in aggressive environments.
3. Good Weldability
Although it is a high-alloy material, UNS S32750 can still be welded using appropriate procedures.
4. Long Service Life
The material performs well in:
- Humid environments
- Chemical exposure
- Marine conditions
- High-pressure systems
Common Applications of UNS S32750 Sheet
UNS S32750 sheets are widely used in industries requiring high strength and corrosion resistance.
Oil and Gas Industry
- Plateformes offshore
- Subsea equipment
- Échangeurs de chaleur
- Appareils à pression
- Pipeline systems
Industrie de transformation chimique
- Réservoirs de stockage de produits chimiques
- Équipement de traitement
- Corrosion-resistant reactors
- Systèmes de tuyauterie industrielle
Génie maritime
- Seawater desalination equipment
- Shipbuilding components
- Marine structural systems
- Saltwater handling equipment
Energy Industry
- Power plant systems
- Flue gas desulfurization equipment
- High-pressure industrial systems
Structural and Industrial Applications
- Heavy-duty structural panels
- High-strength industrial components
- Aggressive environment fabrication systems
Comparison With 316 Acier inoxydable
| Article | États-Unis S32750 | 316 Acier inoxydable |
|---|---|---|
| Force | Très élevé | Moyen |
| Résistance à la corrosion | Excellent | Bien |
| Résistance aux chlorures | Excellent | Modéré |
| Coût | Plus haut | Inférieur |
| Marine performance | Supérieur | Standard |
UNS S32750 is generally selected for more demanding environments than 316 acier inoxydable.
Common Sheet Specifications
| Plage d'épaisseur | Applications courantes |
|---|---|
| 0.5 – 3 mm | Precision and chemical equipment |
| 3 – 10 mm | Structural and industrial systems |
| 10 mm+ | Heavy-duty pressure applications |
Custom sizes and processing are commonly available.
