- Описание
SS316 plate price per kg is generally higher than 304 stainless steel plate because 316 contains additional alloying elements that significantly improve corrosion resistance, Особенно в морской пехотине, химический, и среда, богатая хлоридами. Although both are austenitic stainless steels, the raw material cost, требования к обработке, 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, никель, и молибден. 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, щелевая коррозия, и химическая атака.
316 stainless steel plate is commonly used in marine equipment, химическая обработка, pharmaceutical tanks, and food-grade industrial applications where corrosion resistance is critical.
Химический состав 316 Пластина из нержавеющей стали
The alloy composition directly affects the price difference between 316 и 304.
| Элемент | 316 Нержавеющая сталь (%) | 304 Нержавеющая сталь (%) |
|---|---|---|
| Хром (Кр) | 16.0 – 18.0 | 18.0 – 20.0 |
| Никель (В) | 10.0 – 14.0 | 8.0 – 10.5 |
| Молибден (Мо) | 2.0 – 3.0 | — |
| Углерод (С) | ≤ 0.08 | ≤ 0.08 |
| Марганец (Мин.) | ≤ 2.0 | ≤ 2.0 |
| Железо (Фе) | Баланс | Баланс |
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. Лучшая коррозионная стойкость
316 provides superior resistance to:
- Chloride corrosion
- Pitting corrosion
- 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
Потому что 316 is used in high-end industrial sectors such as pharmaceuticals, marine engineering, and petrochemicals, it is often produced to stricter specifications and surface quality standards, increasing production costs.
Mechanical Properties Comparison
| Свойство | 316 Тарелка | 304 Тарелка |
|---|---|---|
| Предел прочности | ≥ 515 МПа | ≥ 515 МПа |
| Предел текучести | ≥ 205 МПа | ≥ 205 МПа |
| Удлинение | ≥ 40% | ≥ 40% |
| Плотность | 7.98 г/см³ | 7.93 г/см³ |
| Коррозионная стойкость | Отличный | Хороший |
Although the mechanical strength is similar, the corrosion resistance of 316 is much better in aggressive environments.
Общие применения 316 Пластина из нержавеющей стали
Due to its premium alloy composition, 316 plate is widely used in:
- Marine engineering equipment
- Резервуары для хранения химикатов
- Теплообменники
- Фармацевтическое оборудование
- Пищевое оборудование
- Сосуды под давлением
- Морские платформы
- Medical devices
- Coastal building structures
- Опреснительные установки
These applications require materials that can resist corrosion over long service periods.
316 против 304 Пластина из нержавеющей стали
| Особенность | 316 Пластина из нержавеющей стали | 304 Пластина из нержавеющей стали |
|---|---|---|
| Молибден | Да | Нет |
| Содержание никеля | Выше | Стандартный |
| Коррозионная стойкость | Начальство | Стандартный |
| Marine Use | Отличный | Ограниченный |
| Price Per Kg | Выше | Ниже |
| Типичное использование | Химическая / Морской | Общепромышленный |
Typical Plate Specifications
Common sizes for 316 stainless steel plate include:
| Толщина | Ширина | Длина |
|---|---|---|
| 3 мм – 100 мм | 1000 мм – 2000 мм | 2000 мм – 6000 мм |
Standard finishes include 2B, №1, бакалавр, and polished surfaces for industrial and decorative applications.
