1. Увод у 1.4835 Аустенитни од нехрђајућег челика
Нехрђајући челик is an alloy known for its excellent corrosion resistance, which makes it indispensable in various industries.
Among the different grades of stainless steel, austenitic types are particularly valued due to their strength, жилавост, и формалност.
One such grade is 1.4835 (X9CrNiSiNCe21-11-2), a specialized austenitic stainless steel that stands out for its superior heat resistance.
The importance 1.4835 lies in its ability to withstand extreme temperatures while maintaining high levels of mechanical properties and corrosion resistance.
This material is specified for applications where traditional stainless steel might not perform adequately under harsh conditions.
The European standard EN 10088 classifies 1.4835 as a chromium-nickel-silicon nitrogen-strengthened austenitic stainless steel,
often compared with AISI type 309 или 310 but offering distinct advantages in certain environments.
Material Specifications for 1.4835
- EN Material Number: 1.4835
The European standard (У) designation for this high-temperature resistant steel. - EN Short Name: X9CrNiSiNCe21-11-2
This is the short name under EN standards, which gives a quick reference to the material’s composition and properties. - EN Standard: У 10095
This standard specifies the material properties and testing methods for heat-resistant steels, укључујући 1.4835. - Microstructural Category: Heat-resistant steel
1.4835 is classified as heat-resistant steel, meaning it is designed for use in environments with elevated temperatures and oxidative conditions.
Comparable Standards and Designations
| Стандардни | Означавање | Country |
|---|---|---|
| Аиси | 253MA | САД |
| Нас | S30815 | САД |
| Сае | 253MA | САД |
| СС | 2368 | Sweden |
| RVS | 253MA | Немачка |
2. Хемијски састав 1.4835
Understanding the chemical composition of 1.4835 helps explain its exceptional properties.
The material contains several key elements that enhance its heat resistance, отпорност на оксидацију, and overall mechanical strength.
Chemical Breakdown:
| Елемент | Content (%) |
|---|---|
| Никл (У) | 20.00 - 22.00 |
| Хром (ЦР) | 21.00 - 23.00 |
| Силицијум (И) | 1.50 - 2.00 |
| Манган (Мн) | 1.00 - 1.50 |
| Церијум (Це) | 0.03 - 0.05 |
| Гвожђе (Фе) | Равнотежа |
- Никл (У) contributes significantly to corrosion resistance, particularly at high temperatures, and helps stabilize the austenitic structure.
- Хром (ЦР) improves the steel’s ability to resist oxidation and enhances strength at elevated temperatures.
- Силицијум (И) adds resistance to oxidation and strengthens the material under high-temperature conditions.
- Церијум (Це), a rare earth element, further increases high-temperature stability and oxidation resistance.
3. Кључна својства 1.4835 Нехрђајући челик
Физичка својства
- Густина: Приближно 7.9 Г / цм³, which is typical for stainless steels.
- Тачка топљења: Around 1400°C (2552° Ф), indicating its suitability for high-temperature operations.
- Топлотна проводљивост: Lower than carbon steels but higher than other austenitic grades, aiding in heat dissipation.
- Електрична отпорност: Higher electrical resistivity compared to carbon steels, making it less conductive and more resistant to electrical currents.
Механичка својства
- Затезна чврстоћа: High tensile strength ensures that the material can withstand significant stress without breaking.
- Снага приноса: Offers excellent yield strength, which is crucial for maintaining shape under load.
- Издужење: Good elongation means it can be stretched or deformed significantly before failure, contributing to its toughness.
- Тврдоћа: The hardness of 1.4835 is moderate, providing a balance between wear resistance and machinability.
Завабилност
- Welding Characteristics: 1.4835 can be readily welded using most conventional techniques, укључујући ТИГ (Волфрам инертни гас) заваривање, Ја (Метални инертни гас) заваривање, and stick welding.
Међутим, due to its high alloy content, preheating and post-weld heat treatment may be necessary to avoid cracking and ensure optimal mechanical properties in the weld zone.
Отпорност на топлоту
- High-Temperature Strength: One of the standout features of 1.4835 is its ability to maintain high tensile and yield strengths at elevated temperatures.
It can operate continuously up to around 1150°C (2100° Ф) with minimal degradation of its mechanical properties. - Отпорност на оксидацију: Excellent resistance to oxidation, scaling, and embrittlement even at very high temperatures,
which extends the service life of components exposed to such conditions.
Отпорност на корозију
- Општа отпорност на корозију: Superior resistance to various corrosive media, including sulfuric acid, азотне киселине, and chloride-containing environments.
This property makes it suitable for use in chemical processing plants and marine environments. - Отпорност на корозију са корозијом и пукотина: Enhanced by its chromium, силицијум, and nitrogen content, which helps prevent localized corrosion forms like pitting and crevice corrosion.
Heat Treatment and Hot Forming
- Враголовање: Can be annealed at temperatures between 1010°C and 1120°C (1850°F to 2048°F) followed by rapid cooling to restore full ductility and minimize residual stresses.
- Врући рад: Suitable for hot working within a temperature range of 1000°C to 1200°C (1832°F to 2192°F).
Hot forming can be used to produce complex shapes while maintaining the material’s mechanical properties.
4. Предности коришћења 1.4835 Нехрђајући челик
- Висока издржљивост: 1.4835 exhibits excellent performance even in extreme heat, which means longer service life in industrial settings.
- Ниско одржавање: Its resistance to high temperatures and oxidation reduces the need for frequent maintenance, translating into lower operational costs.
- Термално ширење: The material’s ability to withstand thermal expansion makes it ideal for use in environments subject to thermal cycling.
- Свестраност у изради: It can be processed using common fabrication methods, including welding and machining, making it versatile in various applications.
5. Апликације 1.4835 Аустенитни од нехрђајућег челика
- Ваздухопловство: Components like turbine blades and exhaust systems that need to withstand extreme temperatures.
- Аутомотиве: Used in exhaust systems, catalytic converters, and turbochargers.
- Хемијска обрада: Equipment exposed to high heat, such as reactors and heat exchangers.
- Генерација електричне енергије: Турбине, boilers, и измењивачи топлоте.
- Петрохемијски: Components in refineries and heat treatment systems.
Specific Components
- Измењивачи топлоте for cooling and heat transfer in industrial settings.
- Turbine parts that require thermal resistance.
- Furnace components such as burner tips, kiln linings, and thermal insulation parts.
6. Comparing 1.4835 with Other Stainless Steel Grades
1.4835 вс. 304 Нехрђајући челик
| Имовина | 1.4835 | 304 |
|---|---|---|
| Отпорност на топлоту | Up to 1100°C | Up to 870°C |
| Отпорност на корозију | Умерен (not ideal for water) | Одличан (better for wet environments) |
| Апликације | High-temp environments | General-purpose applications |
1.4835 вс. 316 Нехрђајући челик
| Имовина | 1.4835 | 316 |
|---|---|---|
| Отпорност на топлоту | Up to 1100°C | Up to 870°C |
| Отпорност на корозију | Добри (except with water) | Одличан (especially against chlorides) |
| Апликације | High-temperature applications | Marine and chemical processing |
7. Challenges of Working with 1.4835
- Трошак: The alloying elements, including rare earth materials like cerium, make 1.4835 more expensive than other stainless steels.
- Потешкоће са заваривањем: While it can be welded, achieving the desired mechanical properties in welded joints can be difficult, especially at high temperatures.
- Sourcing: Availability may vary by region, as 1.4835 is not as widely produced as more common grades like 304 или 316.
8. Закључак
Закључак, 1.4835 Нехрђајући челик is an ideal choice for industries requiring superior heat resistance и отпорност на корозију in high-temperature environments.
Whether in the ваздухопловство, аутомотиве, хемијска обрада, или генерација електричне енергије индустрија, this material ensures reliable performance in the toughest conditions.
Its combination of high strength, Одлична заваривост, and heat tolerance makes it a go-to option for critical components in high-temperature and corrosive environments.
As industries continue to evolve, 1.4835 will undoubtedly remain a key material in the development of more advanced, high-performance systems.
9. FAQs about 1.4835 (X9CrNiSiNCe21-11-2)
К: Моћи 1.4835 be used in marine applications?
- Не, 1.4835 is not recommended for marine applications due to its limited corrosion resistance, посебно у окружењима богатим хлоридом.
К: How does 1.4835 compare to AISI 253MA?
- 1.4835 is essentially equivalent to AISI 253MA in terms of composition and performance, particularly in high-temperature environments.
10. How DEZE Can Support Your Needs for 1.4835 Нехрђајући челик
У Ово, we provide високог квалитета 1.4835 нехрђајући челик components with tailored machining, сечење, and finishing services.
Our team ensures that every part meets your exact specifications, providing reliable and cost-effective solutions for your industrial needs.
Whether you need custom parts, Брзо прототипирање, или large-scale production, Ово is your trusted partner for 1.4835 нехрђајући челик solutions.
