306 ステンレス鋼板
“306 stainless steel plate” is generally used as a market reference for a higher-grade austenitic stainless steel with improved corrosion resistance compared to 304. It typically features higher nickel content and sometimes molybdenum addition, making it suitable for chemical, 海洋, and high-corrosion industrial environments where standard stainless steels are not sufficient.
- 説明
“306 stainless steel plate” is not a standard widely recognized AISI/ASTM stainless steel grade. In most industrial and international supply chains, this term is often used in error or as a market reference for high-alloy austenitic stainless steels similar to 304/316 families, especially materials with improved corrosion resistance and stability in chloride environments.
In many practical cases, buyers referring to “306 stainless steel” are actually targeting enhanced austenitic stainless steels with higher nickel or molybdenum content than 304.
化学組成 (Typical High-Alloy Austenitic Reference)
以来 306 is not a strict standardized grade, the composition below reflects a common engineering interpretation of upgraded 300-series stainless steel used in industry:
| 要素 | コンテンツ (%) |
|---|---|
| クロム (Cr) | 17.0–19.0 |
| ニッケル (で) | 10.0–14.0 |
| モリブデン (モー) | 2.0-3.0 (optional, depending on variant) |
| 炭素 (C) | ≤ 0.08 |
| マンガン (ん) | ≤ 2.00 |
| シリコン (そして) | ≤ 1.00 |
| リン (P) | ≤ 0.045 |
| 硫黄 (S) | ≤ 0.03 |
| 鉄 (鉄) | バランス |
機械的性質
High-alloy austenitic stainless steels in this category provide balanced strength and excellent toughness.
| 財産 | 代表値 |
|---|---|
| 抗張力 | 520–750MPa |
| 降伏強さ | ≥ 205 MPa |
| 伸長 | ≥ 40% |
| 硬度 | ≤ 200 HB |
| 密度 | 7.9 g/cm3 |
主な性能特徴
1. 優れた耐食性
This material is designed for environments requiring strong resistance to:
- Chloride exposure
- Moist marine atmosphere
- Chemical processing conditions
- Acidic industrial environments
If molybdenum is included, resistance to pitting and crevice corrosion is significantly improved.
2. Good High-Temperature Stability
The alloy maintains stable mechanical performance under moderate elevated temperatures, making it suitable for:
- 熱交換器
- Industrial furnaces (non-extreme zones)
- 熱処理装置
3. Excellent Formability and Weldability
Like other austenitic stainless steels, it provides:
- Easy welding (ティグ, 自分, 等)
- Good deep drawing capability
- Excellent bending performance
- Stable structure without heat treatment hardening
4. Non-Magnetic or Weakly Magnetic
焼きなまし状態, it is generally non-magnetic, which is useful for precision equipment and industrial applications.
Common Applications of “306 Stainless Steel Plate”
Because it is interpreted as a high-performance austenitic stainless steel, it is commonly used in:
- 化学処理装置
- Heat exchanger plates
- Marine engineering components
- Desalination systems
- 食品加工機械
- 製薬機器
- Storage tanks and pressure vessels
- Architectural structures in corrosive environments
- Pump and valve components
- 産業用配管システム
Comparison: 306-Type vs 304 ステンレス鋼
| 財産 | 306-Type Stainless | 304 ステンレス鋼 |
|---|---|---|
| 耐食性 | より高い | 標準 |
| Alloy Content | Higher Ni / possible Mo | より低い |
| 耐塩化物性 | より良い | 適度 |
| コストレベル | より高い | より低い |
| 応用 | Harsh environments | 一般用途 |
