- Descripción
308 stainless steel plate is not a commonly standardized base stainless steel grade like 304 o 316. In most industrial usage, “308 stainless steel” refers to a chromium-nickel austenitic alloy primarily used as a welding filler metal (308 / ER308 / 308l) that is closely related to 304 stainless steel chemistry.
In plate form, it is generally understood as a 304-compatible austenitic stainless steel with stabilized welding and corrosion performance, widely used in welded fabrication systems.
Composición química de 308 Placa de acero inoxidable
The composition is designed to provide strong weldability and corrosion resistance similar to 304 acero inoxidable, but with optimized welding performance.
| Elemento | Contenido (%) |
|---|---|
| Cromo (cr) | 18.0–20,0 |
| Níquel (En) | 9.0–11.0 |
| Carbón (do) | ≤ 0.08 (or ≤ 0.03 for 308L) |
| Manganeso (Minnesota) | ≤ 2.00 |
| Silicio (Y) | ≤ 1.00 |
| Fósforo (PAG) | ≤ 0.045 |
| Azufre (S) | ≤ 0.03 |
| Hierro (fe) | Balance |
Propiedades mecánicas
308 stainless steel exhibits typical austenitic stainless steel performance with good strength and excellent ductility.
| Propiedad | Valor típico |
|---|---|
| Resistencia a la tracción | 520–750MPa |
| Fuerza de producción | ≥ 205 MPa |
| Alargamiento | ≥ 40% |
| Dureza | ≤ 200 media pensión |
| Densidad | 7.9 gramos/cm³ |
Principales características de rendimiento
1. Excellent Weldability
308 stainless steel is widely recognized for its excellent welding compatibility, especially for joining:
- 304 acero inoxidable
- Similar austenitic stainless steels
It is commonly used as a matching or over-alloyed filler material to improve weld strength and corrosion resistance.
2. Buena resistencia a la corrosión
It provides corrosion resistance similar to 304 acero inoxidable, suitable for:
- Ambientes atmosféricos
- Mild chemical exposure
- Food-grade processing environments
- Water systems
It performs well in general industrial conditions but is not intended for highly chloride-rich environments.
3. Stable Austenitic Structure
308 stainless steel maintains a fully austenitic structure, ofrenda:
- Non-magnetic behavior (condición recocida)
- Good toughness at low temperature
- Stable mechanical properties after welding
4. Buena formabilidad
The material has excellent processing performance:
- Doblar
- Estampado
- Rolling
- Deep drawing
- Fabrication of welded assemblies
Aplicaciones comunes de 308 Placa de acero inoxidable
308 stainless steel plate is mainly used in welding-related fabrication and general industrial structures.
Las aplicaciones típicas incluyen:
- Welding fabrication structures
- Stainless steel pipe welding systems
- Pressure vessel welding components
- Equipos de procesamiento de alimentos
- Chemical equipment linings
- Heat exchanger assemblies
- Industrial storage tanks
- Structural welded frames
- Automotive exhaust welding parts
- General stainless steel fabrication projects
308 Acero inoxidable vs. 304 Acero inoxidable
| Propiedad | 308 Acero inoxidable | 304 Acero inoxidable |
|---|---|---|
| Main Role | Soldadura & soporte de fabricación | Base structural material |
| Composición | Slightly higher Ni balance | Estándar 18-8 inoxidable |
| Soldabilidad | Excelente | Bien |
| Resistencia a la corrosión | Similar | Bien |
| Uso típico | Welding filler / welded systems | fabricación general |
