- Descripción
Duplex stainless steel sheet is a type of stainless steel that combines austenitic and ferritic microstructures, typically in a 50/50 ratio. This dual-phase structure provides alta resistencia, excelente resistencia a la corrosión, and good weldability, making duplex stainless steels widely used in marina, químico, and oil & gas industries.
Compared with conventional stainless steels like 304 o 316, duplex grades offer higher strength and better resistance to stress corrosion cracking.
Main Types of Duplex Stainless Steel Grades
Duplex stainless steels are generally classified into three main categories:
1. Standard Duplex Stainless Steel
These are the most commonly used duplex grades with balanced performance.
Grados típicos
- 2205 (UNS S32205 / S31803)
- 2304 (UNS S32304)
Características
- Good balance of strength and corrosion resistance
- Widely used in general industrial applications
- Cost-effective compared to super duplex
2. Super Duplex Stainless Steel
Super duplex grades contain higher levels of chromium, molibdeno, y nitrógeno, offering superior performance.
Grados típicos
- 2507 (EE. UU. S32750)
- EE.UU. S32760 (Zeron 100 type)
Características
- Excellent resistance to pitting and crevice corrosion
- High strength in harsh environments
- Suitable for offshore and marine conditions
3. Lean Duplex Stainless Steel
Lean duplex grades have lower alloy content, providing a more economical option.
Grados típicos
- 2101 (UNS S32101)
- LDX 2404 (UNS S82441)
Características
- Lower nickel content reduces cost
- Resistencia moderada a la corrosión
- Suitable for structural and less aggressive environments
Duplex Stainless Steel Grades Overview Table
| Categoría | Calificación | Número UNS | Características clave | Aplicaciones típicas |
|---|---|---|---|---|
| Lean Duplex | 2101 | S32101 | Rentable, moderate strength | Estructural, construcción |
| Lean Duplex | 2304 | S32304 | Buena resistencia a la corrosión | Tanques de almacenamiento, uso general |
| Standard Duplex | 2205 | S32205 / S31803 | Rendimiento equilibrado | Químico, marina |
| Súper Dúplex | 2507 | S32750 | Alta resistencia a la corrosión | Costa afuera, sistemas de agua de mar |
| Súper Dúplex | S32760 | S32760 | Extreme durability | Aceite & gas, desalination |
Key Characteristics of Duplex Stainless Steel
- Alta resistencia (about twice that of austenitic stainless steel)
- Excellent resistance to stress corrosion cracking
- Good pitting and crevice corrosion resistance
- Mejor conductividad térmica que los grados austeníticos
- Good weldability with proper control
Aplicaciones comunes
Duplex stainless steel sheets are widely used in:
Oil and Gas Industry
- Pipelines and pressure vessels
- Plataformas marinas
Ingeniería Marina
- Componentes del barco
- Seawater handling systems
Chemical Processing
- Tanques de almacenamiento
- Intercambiadores de calor
Construction and Infrastructure
- Bridges and structural components
- Water treatment facilities
Teda Ganghua – Capacidad de suministro
Teda Ganghua supplies a wide range of duplex stainless steel sheets:
- Full grade coverage (lean, estándar, súper dúplex)
- Various thickness and size options
- Servicios de corte y fabricación personalizados.
- Strict quality inspection and export standards
Con fuerte capacidad de inventario y procesamiento., Teda Ganghua proporciona reliable duplex stainless steel solutions for demanding industrial applications.
