MP35N alloy solves the problems commonly encountered with ordinary трубы из нержавеющей стали а также фитинги из нержавеющей стали in critical high-pressure environments.
What is MP35N alloy? A High Performance Superalloy
MP35N alloy is a specialised cobalt-based alloy belonging to the multi-phase alloy family. The ‘MP’ stands for multi-phase, and it is renowned for its exceptional strength and excellent corrosion resistance. This alloy combines unique performance characteristics, making it an ideal choice for high-end applications.
Key Advantages of MP35N Alloy
MP35N alloy boasts remarkable strength, attributed to work hardening and age treatment. It resists plastic deformation, making it an excellent choice for fasteners and pressure vessels.
It withstands various corrosive media, including hydrogen sulphide and chlorides. It performs exceptionally well in both oxidising and reducing media, making it vital for demanding chemical processes.
The alloy exhibits exceptional resistance to коррозионное растрескивание под напряжением, preventing brittle fracture. This is particularly important in chloride and sulphur-containing gas environments.
The alloy maintains its performance under cyclic loads, resisting crack initiation and propagation, making it the material of choice for dynamic applications.
Химический состав
| Элемент | Ni | Co | Cr | Пн | Fe | Ti |
|---|---|---|---|---|---|---|
| Weight (%) | 33.0 – 37.0 | Остаток средств | 19.0 – 21.0 | 9.0 – 10.5 | ≤1.0 | ≤1.0 |
Механические свойства
| Имущество | Предел прочности | Твердость | Operating Temp | Устойчивость к коррозии | Stress Corrosion Resistance |
|---|---|---|---|---|---|
| Value (Typical) | Up to 1860 MPa | HRC 45 – 55 | Up to 370 she’shi’du | Превосходно | Превосходно |
MP35N Alloy VS 316L Stainless Steel
| Характеристика | MP35N Alloy | Нержавеющая сталь 316L |
|---|---|---|
| Сила | Very High | Good |
| Коррозия | Превосходно | Good |
| Stress Corrosion | Превосходно | Poor to Fair |
| Стоимость | Very High | Low to Medium |
| Fabrication | Difficult | Easy |
Applications of MP35N Alloy in Pipelines and Related Systems
- Клапаны: For valves handling high pressure, MP35N alloy has anti-galling properties. It is used for valve stems and valve internals, providing long-term sealing.
- Fasteners: Bolts and nuts connect critical pressure vessels, and high strength is essential in this application.
- Pipe systems: It can be used for critical stainless steel pipe fittings that require extremely high strength and corrosion resistance, such as in deep-sea applications.
- High-pressure environments: Used in oil and gas production. It can withstand sulphur-containing gas environments.
Sourcing and Processing of MP35N Alloy
A complete Отчет об испытаниях материала (MTR) is required. It verifies the precise composition of the alloy and ensures its performance.
Работа с specialized suppliers of stainless steel pipe and fittings. They understand these alloy steels and can ensure proper fabrication and quality control,and are ISO 9001 и CE-PED certified.
This alloy is difficult to machine and requires special tools. Specific welding techniques are essential to ensure the integrity of the weld.
This alloy is expensive, so it is important to assess whether the product has a longer service life. This can justify its higher initial cost.
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