- 説明
SS316 plate price per kg is generally higher than 304 stainless steel plate because 316 contains additional alloying elements that significantly improve corrosion resistance, 特に海洋では, 化学薬品, and chloride-rich environments. Although both are austenitic stainless steels, the raw material cost, 処理要件, and end-use performance of 316 make it a premium grade in many industrial sectors.
What Is SS316 Plate?
SS316 plate is an austenitic stainless steel plate containing chromium, ニッケル, とモリブデン. The addition of molybdenum is the key reason why 316 stainless steel performs better than 304 in harsh environments. It offers excellent resistance to pitting corrosion, 隙間腐食, そして化学攻撃.
316 stainless steel plate is commonly used in marine equipment, 化学処理, pharmaceutical tanks, and food-grade industrial applications where corrosion resistance is critical.
の化学組成 316 ステンレス鋼板
The alloy composition directly affects the price difference between 316 そして 304.
| 要素 | 316 ステンレス鋼 (%) | 304 ステンレス鋼 (%) |
|---|---|---|
| クロム (Cr) | 16.0 – 18.0 | 18.0 – 20.0 |
| ニッケル (で) | 10.0 – 14.0 | 8.0 – 10.5 |
| モリブデン (モー) | 2.0 – 3.0 | — |
| 炭素 (C) | ≤ 0.08 | ≤ 0.08 |
| マンガン (ん) | ≤ 2.0 | ≤ 2.0 |
| 鉄 (鉄) | バランス | バランス |
The presence of 2–3% molybdenum makes 316 significantly more expensive because molybdenum is a costly alloying metal.
Why SS316 Plate Price Per Kg Is Higher
1. Molybdenum Increases Raw Material Cost
The most important reason 316 stainless steel costs more is the addition of molybdenum. This element improves corrosion resistance in saltwater and acidic conditions but adds substantial alloy cost.
2. Higher Nickel Content
316 stainless steel usually contains more nickel than 304. Nickel is one of the major cost drivers in stainless steel production, and fluctuations in nickel prices directly affect 316 plate price per kg.
3. 優れた耐食性
316 provides superior resistance to:
- 塩化物腐食
- 孔食
- Chemical processing environments
- Marine atmosphere
- Coastal structures
This enhanced performance makes 316 suitable for demanding industries where material failure is costly.
4. More Specialized Applications
なぜなら 316 is used in high-end industrial sectors such as pharmaceuticals, 海洋工学, and petrochemicals, it is often produced to stricter specifications and surface quality standards, increasing production costs.
Mechanical Properties Comparison
| 財産 | 316 皿 | 304 皿 |
|---|---|---|
| 抗張力 | ≥ 515 MPa | ≥ 515 MPa |
| 降伏強さ | ≥ 205 MPa | ≥ 205 MPa |
| 伸長 | ≥ 40% | ≥ 40% |
| 密度 | 7.98 g/cm3 | 7.93 g/cm3 |
| 耐食性 | 素晴らしい | 良い |
Although the mechanical strength is similar, the corrosion resistance of 316 is much better in aggressive environments.
一般的な用途 316 ステンレス鋼板
Due to its premium alloy composition, 316 plate is widely used in:
- Marine engineering equipment
- 化学薬品貯蔵タンク
- 熱交換器
- Pharmaceutical machinery
- 食品加工装置
- 圧力容器
- オフショアプラットフォーム
- Medical devices
- Coastal building structures
- Desalination plants
These applications require materials that can resist corrosion over long service periods.
316 対 304 ステンレス鋼板
| 特徴 | 316 ステンレス鋼板 | 304 ステンレス鋼板 |
|---|---|---|
| モリブデン | はい | いいえ |
| ニッケル含有量 | より高い | 標準 |
| 耐食性 | 優れた | 標準 |
| Marine Use | 素晴らしい | 限定 |
| Price Per Kg | より高い | より低い |
| 一般的な使用方法 | 化学薬品 / 海洋 | 一般産業用 |
代表的なプレート仕様
Common sizes for 316 ステンレス鋼板が含まれています:
| 厚さ | 幅 | 長さ |
|---|---|---|
| 3 mm – 100 mm | 1000 mm – 2000 mm | 2000 mm – 6000 mm |
Standard finishes include 2B, No.1, BA, and polished surfaces for industrial and decorative applications.
