- 説明
Thick stainless steel sheet refers to medium and heavy gauge stainless steel plates used in structural engineering, 産業機器, 圧力容器, 造船, 機械製造, and heavy fabrication industries. Compared with thin stainless steel sheets, thick plates provide higher strength, better load-bearing capacity, and improved structural stability.
The definition of “thick” stainless steel sheet varies by industry, but materials above approximately 3 mm thickness are generally classified as medium or thick stainless steel plates.
1. Common Thickness Range of Stainless Steel Sheets and Plates
| Category | 厚さの範囲 | Typical Application |
|---|---|---|
| Thin Stainless Steel Sheet | 0.3 mm – 3 mm | 装飾, キッチン用品, 精密加工 |
| Medium Thickness Plate | 3 mm – 20 mm | 構造製作, タンク, 機械 |
| Thick Stainless Steel Plate | 20 mm – 60 mm | Heavy industry, 圧力容器 |
| Extra Thick Stainless Steel Plate | 60 mm以上 | オフショア, 造船, heavy engineering |
2. Common Standard Thickness Specifications
The following thicknesses are commonly available in international stainless steel markets:
Thin to Medium Thickness
- 1 mm
- 1.5 mm
- 2 mm
- 3 mm
- 4 mm
- 5 mm
- 6 mm
Medium to Heavy Thickness
- 8 mm
- 10 mm
- 12 mm
- 14 mm
- 16 mm
- 20 mm
- 25 mm
Heavy Plate Thickness
- 30 mm
- 40 mm
- 50 mm
- 60 mm
- 80 mm
- 100 mm以上
3. 共通の幅と長さの仕様
Thick stainless steel sheets are typically supplied in standard plate dimensions.
| 幅 | 一般的な長さ |
|---|---|
| 1000 mm | 2000 mm |
| 1219 mm | 2438 mm |
| 1500 mm | 3000 mm |
| 1800 mm | 6000 mm |
| 2000 mm | 6000 mm |
Custom cutting and processing sizes are also common in industrial applications.
4. Hot Rolled vs Cold Rolled Thickness Range
Cold Rolled Stainless Steel
- Usually produced from 0.3 mmから 6 mm
- Better surface finish and dimensional accuracy
- Common surface finishes: 2B, BA, 起毛した
熱間圧延ステンレス鋼
- Commonly produced above 3 厚さmm
- Suitable for heavy plates and structural applications
- Typical surface finish: No.1 finish
Thicker stainless steel plates are generally manufactured using hot rolling processes.
5. Common Stainless Steel Grades for Thick Plates
| 学年 | Main Characteristics |
|---|---|
| 304 | 一般耐食性 |
| 304L | Better weldability |
| 316 | Improved chloride resistance |
| 316L | 低炭素, chemical applications |
| 310S | 高温耐性 |
| 2205 デュプレックス | High strength and corrosion resistance |
6. Industrial Applications of Thick Stainless Steel Plates
Thick stainless steel sheets are widely used in:
- 圧力容器
- 化学薬品貯蔵タンク
- Shipbuilding structures
- オフショアプラットフォーム
- Heavy machinery manufacturing
- 熱交換器
- 産業用パイプライン
- Structural engineering systems
7. Processing Characteristics of Thick Stainless Steel
厚みが増すにつれて, processing difficulty also increases.
Common processing methods:
- プラズマ切断
- ウォータージェット切断
- CNC加工
- Heavy plate welding
- Rolling and forming
主な考慮事項:
- Higher welding heat input required
- Stronger forming equipment needed
- Slower machining speed
- Stress control during fabrication
