

308 Tấm thép không gỉ
308 stainless steel plate is a chromium-nickel austenitic stainless material closely related to 304 stainless steel and widely associated with welding applications. It provides excellent weldability, stable corrosion resistance, and strong mechanical performance. It is mainly used in welded stainless steel structures, industrial fabrication systems, and equipment where reliable joint performance is critical.
Yêu cầu nhanh
- Sự miêu tả
308 stainless steel plate is not a commonly standardized base stainless steel grade like 304 hoặc 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.
Thành phần hóa học của 308 Tấm thép không gỉ
The composition is designed to provide strong weldability and corrosion resistance similar to 304 thép không gỉ, but with optimized welding performance.
| Yếu tố | Nội dung (%) |
|---|---|
| crom (Cr) | 18.0–20.0 |
| Niken (TRONG) | 9.0–11.0 |
| Cacbon (C) | ≤ 0.08 (or ≤ 0.03 for 308L) |
| Mangan (Mn) | ≤ 2.00 |
| Silicon (Và) | ≤ 1.00 |
| Phốt pho (P) | ≤ 0.045 |
| lưu huỳnh (S) | ≤ 0.03 |
| Sắt (Fe) | Sự cân bằng |
Tính chất cơ học
308 stainless steel exhibits typical austenitic stainless steel performance with good strength and excellent ductility.
| Tài sản | Giá trị điển hình |
|---|---|
| Độ bền kéo | 520–750 MPa |
| Sức mạnh năng suất | ≥ 205 MPa |
| Độ giãn dài | ≥ 40% |
| độ cứng | ≤ 200 HB |
| Tỉ trọng | 7.9 g/cm³ |
Tính năng hiệu suất chính
1. Khả năng hàn tuyệt vời
308 stainless steel is widely recognized for its excellent welding compatibility, especially for joining:
- 304 thép không gỉ
- Similar austenitic stainless steels
It is commonly used as a matching or over-alloyed filler material to improve weld strength and corrosion resistance.
2. Chống ăn mòn tốt
It provides corrosion resistance similar to 304 thép không gỉ, suitable for:
- Môi trường khí quyển
- 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, cúng dường:
- Non-magnetic behavior (annealed condition)
- Good toughness at low temperature
- Stable mechanical properties after welding
4. Khả năng định dạng tốt
The material has excellent processing performance:
- uốn
- Dập
- Lăn
- Deep drawing
- Fabrication of welded assemblies
Ứng dụng phổ biến của 308 Tấm thép không gỉ
308 stainless steel plate is mainly used in welding-related fabrication and general industrial structures.
Các ứng dụng điển hình bao gồm:
- Welding fabrication structures
- Stainless steel pipe welding systems
- Pressure vessel welding components
- Thiết bị chế biến thực phẩm
- Chemical equipment linings
- Heat exchanger assemblies
- Industrial storage tanks
- Structural welded frames
- Automotive exhaust welding parts
- General stainless steel fabrication projects
308 Thép không gỉ so với 304 thép không gỉ
| Tài sản | 308 thép không gỉ | 304 thép không gỉ |
|---|---|---|
| Main Role | hàn & fabrication support | Base structural material |
| Thành phần | Slightly higher Ni balance | Tiêu chuẩn 18-8 không gỉ |
| Tính hàn | Xuất sắc | Tốt |
| Chống ăn mòn | Similar | Tốt |
| Sử dụng điển hình | Welding filler / welded systems | Chế tạo chung |












