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308 stainless steel plate is not a commonly standardized base stainless steel grade like 304 또는 316. In most industrial usage, “308 stainless steel” refers to a chromium-nickel austenitic alloy primarily used as a welding filler metal (308 / ER308 / 308엘) 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.
화학 성분 308 스테인레스 강판
The composition is designed to provide strong weldability and corrosion resistance similar to 304 스테인레스 스틸, but with optimized welding performance.
| 요소 | 콘텐츠 (%) |
|---|---|
| 크롬 (Cr) | 18.0-20.0 |
| 니켈 (~ 안에) | 9.0-11.0 |
| 탄소 (기음) | ≤ 0.08 (or ≤ 0.03 for 308L) |
| 망간 (망) | ≤ 2.00 |
| 규소 (그리고) | ≤ 1.00 |
| 인 (피) | ≤ 0.045 |
| 황 (에스) | ≤ 0.03 |
| 철 (철) | 균형 |
기계적 성질
308 stainless steel exhibits typical austenitic stainless steel performance with good strength and excellent ductility.
| 재산 | 일반적인 값 |
|---|---|
| 인장 강도 | 520-750MPa |
| 항복 강도 | ≥ 205 MPa |
| 연장 | ≥ 40% |
| 경도 | ≤ 200 HB |
| 밀도 | 7.9 g/cm3 |
주요 성능 특징
1. 우수한 용접성
308 stainless steel is widely recognized for its excellent welding compatibility, especially for joining:
- 304 스테인레스 스틸
- Similar austenitic stainless steels
It is commonly used as a matching or over-alloyed filler material to improve weld strength and corrosion resistance.
2. 좋은 내식성
It provides corrosion resistance similar to 304 스테인레스 스틸, 적합하다:
- 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, 헌금:
- Non-magnetic behavior (annealed condition)
- Good toughness at low temperature
- Stable mechanical properties after welding
4. 좋은 성형성
The material has excellent processing performance:
- 벤딩
- 스탬핑
- 구르는
- 딥 드로잉
- Fabrication of welded assemblies
일반적인 응용 분야 308 스테인레스 강판
308 stainless steel plate is mainly used in welding-related fabrication and general industrial structures.
일반적인 응용 분야는 다음과 같습니다.:
- Welding fabrication structures
- Stainless steel pipe welding systems
- Pressure vessel welding components
- 식품 가공 장비
- Chemical equipment linings
- Heat exchanger assemblies
- 산업용 저장 탱크
- Structural welded frames
- Automotive exhaust welding parts
- General stainless steel fabrication projects
308 스테인레스 스틸 대 304 스테인레스 스틸
| 재산 | 308 스테인레스 스틸 | 304 스테인레스 스틸 |
|---|---|---|
| Main Role | 용접 & fabrication support | Base structural material |
| 구성 | Slightly higher Ni balance | 기준 18-8 스테인레스 |
| 용접성 | 훌륭한 | 좋은 |
| 부식 저항 | Similar | 좋은 |
| 일반적인 사용 | Welding filler / welded systems | 일반제작 |
