308 Пластина из нержавеющей стали
- Описание
308 stainless steel plate is not a commonly standardized base stainless steel grade like 304 или 316. In most industrial usage, “308 stainless steel” refers to a chromium-nickel austenitic alloy primarily used as a welding filler metal (308 / ER308 / 308л) 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.
Химический состав 308 Пластина из нержавеющей стали
The composition is designed to provide strong weldability and corrosion resistance similar to 304 нержавеющая сталь, but with optimized welding performance.
| Элемент | Содержание (%) |
|---|---|
| Хром (Кр) | 18.0–20,0 |
| Никель (В) | 9.0–11.0 |
| Углерод (С) | ≤ 0.08 (or ≤ 0.03 for 308L) |
| Марганец (Мин.) | ≤ 2.00 |
| Кремний (И) | ≤ 1.00 |
| Фосфор (П) | ≤ 0.045 |
| сера (С) | ≤ 0.03 |
| Железо (Фе) | Баланс |
Механические свойства
308 stainless steel exhibits typical austenitic stainless steel performance with good strength and excellent ductility.
| Свойство | Типичное значение |
|---|---|
| Предел прочности | 520–750 МПа |
| Предел текучести | ≥ 205 МПа |
| Удлинение | ≥ 40% |
| Твердость | ≤ 200 полупансион |
| Плотность | 7.9 г/см³ |
Основные характеристики производительности
1. Отличная свариваемость
308 stainless steel is widely recognized for its excellent welding compatibility, especially for joining:
- 304 нержавеющая сталь
- Similar austenitic stainless steels
It is commonly used as a matching or over-alloyed filler material to improve weld strength and corrosion resistance.
2. Хорошая коррозионная стойкость
It provides corrosion resistance similar to 304 нержавеющая сталь, подходит для:
- Atmospheric environments
- 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, предложение:
- Non-magnetic behavior (annealed condition)
- Good toughness at low temperature
- Stable mechanical properties after welding
4. Хорошая формуемость
The material has excellent processing performance:
- Гибка
- Штамповка
- Роллинг
- Deep drawing
- Fabrication of welded assemblies
Общие применения 308 Пластина из нержавеющей стали
308 stainless steel plate is mainly used in welding-related fabrication and general industrial structures.
Типичные приложения включают:
- Welding fabrication structures
- Stainless steel pipe welding systems
- Pressure vessel welding components
- Пищевое оборудование
- Chemical equipment linings
- Heat exchanger assemblies
- Industrial storage tanks
- Structural welded frames
- Automotive exhaust welding parts
- General stainless steel fabrication projects
308 Нержавеющая сталь против 304 Нержавеющая сталь
| Свойство | 308 Нержавеющая сталь | 304 Нержавеющая сталь |
|---|---|---|
| Main Role | Сварка & fabrication support | Base structural material |
| Состав | Slightly higher Ni balance | Стандартный 18-8 нержавеющая ставка |
| Свариваемость | Отличный | Хороший |
| Коррозионная стойкость | Similar | Хороший |
| Типичное использование | Welding filler / welded systems | Общее изготовление |
