Нержавеющая сталь, аустенитная
317L Stainless Steel (S31703) Sheet & Plate
Аустенитная нержавеющая сталь с низким содержанием углерода и высоким содержанием молибдена, с более высоким содержанием никелевого сплава, чем у 316L.
Alloy 317L (UNS S31703) is a low carbon corrosion resistant austenitic chromium-nickel-molybdenum stainless steel. The high levels of these elements assure the alloy has superior chloride pitting and general corrosion resistance to the conventional 304/304Л и 316/316L grades. The alloy provides improved resistance relative to 316L in strongly corrosive environments containing sulfurous media, chlorides, and other halides.
It can be used in applications where it is not possible to anneal after welding and where maximum corrosion resistance is required. It provides good oxidation resistance in intermittent service to 1600 ° F and in continuous service to 1700 ° F.
This alloy combines excellent corrosion resistance with good механические свойства, свариваемость, and Формируемость, making it ideal for applications in chemical, petrochemical, and marine industries, as well as food processing and pharmaceutical equipment.
СКАЧАТЬ PDF
317L Stainless Steel Related Specifications
| Система / Стандарт | Страна / регион | Звание / Должность |
| АИСИ | США | 317L |
| ООН | Международный | S31703 |
| RU / EN №. | Европа | 1.4438 |
| RU Имя | Европа | X2CrNiMo18-15-4 |
| АСТМ А240 | США | 317L (plate, sheet, strip) |
| ГОСТ А276 | США | 317L (bars, shapes) |
| АСТМ А213 | США | TP317L (boiler / HX tubes) |
| ASTM A312 | США | TP317L (seamless pipe) |
| Великобритания | Китай | 022Cr19Ni13Mo3 |
| ДЖИС | Япония | SUS317L |
| БС | Великобритания | 317S12 |
| АФНОР | Франция | Z2CND19-15-04 |
Свойства
Химический состав
S31703 Sheet and Plate
АСТМ А240
| Химический элемент | % Настоящее |
| Углерод (C) | 0.00 - 0.03 |
| Хром (Cr) | 18.00 - 20.00 |
| Никель (Ni) | 11.00 - 15.00 |
| Марганец (Mn) | 0.00 - 2.00 |
| Фосфор (P) | 0.00 - 0.04 |
| Сера (S) | 0.00 - 0.03 |
| Кремний (Si) | 0.00 - 0.75 |
| Молибден (Mo) | 3.00 - 4.00 |
| Азот (N) | 0.00 - 0.10 |
| Железо (Fe) | Баланс |
Механические свойства
Лист и плита
АСТМ А240
| Механические свойства | Значение |
| Предел текучести | 205 Мн МПа |
| Предел прочности | 515 МПа |
| Удлинение A50 мм | 40 минут % |
Applications of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel с превосходная коррозионная стойкость, particularly in aggressive chemical and chloride-containing environments. Its combination of durability, weldability, and resistance to chemical attack makes it suitable for a wide range of applications.
1. Химическая и нефтехимическая промышленность
Reactors, tanks, and vessels for corrosive chemicals
Heat exchangers and condensers
Piping systems handling acids and chlorides
Valves, fittings, and pumps in chemical processes
2. Marine and Seawater Applications
Components exposed to seawater or brackish water
Marine piping and structural equipment
Desalination plant components
3. Food and Pharmaceutical Industry
Processing equipment requiring corrosion resistance and hygiene
Storage tanks and piping for acidic or aggressive media
Heat exchangers, evaporators, and agitators
4. Industrial and Mechanical Applications
Fasteners, bolts, and screws in corrosive environments
Structural components in aggressive atmospheres
Components exposed to high humidity or saline conditions
Резюме
317L stainless steel is widely used in chemical, marine, pharmaceutical, and industrial applications where superior corrosion resistance, especially to chlorides and oxidizing acids, is essential. Its low-carbon content обеспечивает превосходное свариваемость, making it ideal for fabricated components and complex assemblies.
Characteristics of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel предназначенный для superior corrosion resistance and excellent performance in aggressive environments. It is widely used in industries requiring durability, chemical resistance, and good mechanical properties.
1. Superior Corrosion Resistance
Высоко molybdenum content enhances resistance to pitting, crevice corrosion, and chemical attack, particularly in chloride or acidic environments.
Performs better than 316L in oxidizing and aggressive chemical media.
2. Austenitic Structure
Provides excellent ductility, toughness, and formability.
Maintains good mechanical properties at both high and low temperatures.
3. Low Carbon Content
Minimizes the risk of сенсибилизация во время сварки.
Ensures resistance to межкристаллитная коррозия even after heat exposure.
4. Weldability and Fabrication
Отлично свариваемость using standard methods such as TIG, MIG, and SMAW.
Can be easily formed into sheets, pipes, or complex components.
5. Mechanical Properties
Good tensile strength, yield strength, and elongation.
Поддерживает structural integrity under both static and dynamic loads.
Резюме
317L stainless steel is characterized by high corrosion resistance, excellent weldability, good formability, and reliable mechanical properties. Его low carbon and high molybdenum content make it ideal for chemical, marine, pharmaceutical, and industrial applications, especially where resistance to chlorides and acids is critical.
Дополнительная информация
Изготовление
Fabrication of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel with excellent corrosion resistance and good mechanical properties. It can be fabricated using standard industrial techniques including forming, welding, and machining.
Формирование
Холодная обработка:
317L exhibits good ductility, making it suitable for bending, deep drawing, rolling, and stamping.
Work hardening occurs, so intermediate отжиг may be required for extensive forming.
Горячая обработка:
Performed at elevated temperatures to reduce work hardening and improve ductility.
Typical hot working range: 1150–900°C (2100–1650°F).
2. Сварка
Excellent weldability using ТИГ, МИГ, РДЗ, и ПЭГ методы.
Низкое содержание углерода минимизирует сенсибилизация and reduces risk of межкристаллитная коррозия.
Filler metals such as ER317L или ER316L are commonly used to ensure corrosion resistance in welded joints.
3. Механическая обработка
Moderate machinability due to the austenitic structure.
Work hardens easily; sharp tools and rigid setups are recommended.
Carbide tools and proper cutting fluids improve tool life and surface finish.
4. Послемонтажная обработка
Отжиг Restores ductility and relieves stresses after heavy cold working.
Pickling and Passivation: Recommended to remove scale and restore optimal corrosion resistance after welding or hot forming.
5. Приложения, связанные с производством
Оборудование для химической и нефтехимической промышленности
Marine components and seawater piping
Food and pharmaceutical processing machinery
Heat exchangers, tanks, and vessels
Резюме
317L stainless steel is легко изготавливаемый, supporting cold and hot forming, welding, and machining. Its низкое содержание углерода ensures excellent weldability and corrosion resistance, making it ideal for chemical, marine, pharmaceutical, and industrial applications.
Свариваемость
Weldability of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel с отличная свариваемость, making it suitable for fabricating corrosion-resistant components in aggressive environments.
1. Общая свариваемость
Can be welded using all standard fusion welding techniques:
ТИГ (ГТД)
МИГ (GMAW)
РДЗ (ручная дуговая сварка)
СВАО (Сварка самозащитной порошковой проволокой)
Welds maintain good toughness, corrosion resistance, and mechanical strength.
2. Low Carbon Advantage
The low carbon content minimizes сенсибилизация, preventing межкристаллитная коррозия in welded zones.
Unlike higher carbon stainless steels, 317L does not require special post-weld heat treatment for corrosion resistance in most applications.
3. Filler Metal Recommendations
Suitable filler metals include:
ER317L (matching high-molybdenum, low-carbon composition)
ER316L (for less aggressive environments)
Filler selection ensures consistent коррозионная стойкость и механические свойства in the weld.
4. Heat Input and Preparation
Moderate heat input is recommended to avoid excessive grain growth.
Clean joint surfaces free of oil, grease, or oxide scale ensure better weld quality.
Preheating is typically не требуется.
5. Post-Weld Considerations
Post-weld annealing is generally unnecessary unless the component is heavily stressed or exposed to very aggressive environments.
Травление или пассивация is recommended to restore the chromium oxide layer after welding.
6. Applications Related to Weldability
Chemical and petrochemical equipment
Marine piping and structural components
Food and pharmaceutical processing machinery
Heat exchangers, tanks, and vessels
Резюме
317L stainless steel exhibits отличная свариваемость due to its low carbon content and austenitic structure. Proper filler selection and controlled welding techniques produce strong, corrosion-resistant joints, making 317L ideal for chemical, marine, pharmaceutical, and industrial applications.
Обрабатываемость
Machinability of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel. It offers умеренная обрабатываемость, similar to other austenitic stainless steels, but certain characteristics require careful attention during machining.
1. Наклеп
317L has a high tendency to work harden, especially during light cuts or repeated passes.
To reduce work hardening:
Использовать sharp, rigid tooling
Avoid shallow or interrupted cuts
Нанять adequate lubrication and coolant
2. Рекомендации по инструментарию
Твердосплавные инструменты are preferred for efficient cutting and long tool life.
High-speed steel (HSS) tools can be used for lower-speed operations.
Rigid fixturing minimizes vibration and improves surface finish.
3. Режимы резания
Использовать moderate to low cutting speeds to avoid heat buildup.
Maintain adequate feed and depth of cut to reduce tool rubbing.
Continuous coolant flow improves tool life and chip evacuation.
4. Формирование стружки
Производит длинная, пластичная стружка благодаря своей аустенитной структуре.
Use chip breakers or controlled cutting techniques to manage chips effectively.
5. Surface Finish
Achievable with proper tooling and lubrication.
Avoid overheating, which can degrade the surface layer and reduce corrosion resistance.
6. Applications Related to Machining
Прецизионные компоненты в chemical and petrochemical equipment
Fittings, valves, and fasteners in aggressive environments
Piping, tanks, and industrial machinery requiring corrosion-resistant parts
Резюме
317L stainless steel exhibits умеренная обрабатываемость with a high work-hardening tendency. Proper tooling, cutting speeds, and coolant use are essential for effective machining. Its machinability combined with превосходная коррозионная стойкость делает его подходящим для chemical, marine, pharmaceutical, and industrial applications.
Устойчивость к коррозии
Corrosion Resistance of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel that provides превосходная коррозионная стойкость in aggressive environments, particularly where chlorides or oxidizing acids are present. Its corrosion resistance is superior to that of 316L due to the higher molybdenum content.
1. Общая коррозионная стойкость
Сопротивляется oxidation и general atmospheric corrosion.
Хорошо работает в moderate chemical environments, including mild acids and alkaline solutions.
Suitable for outdoor applications and industrial environments.
2. Pitting and Crevice Corrosion
High molybdenum content improves resistance to pitting and crevice corrosion.
Particularly effective in хлоридсодержащие среды, such as seawater or brine solutions.
Outperforms 316L in marine and chemical processing applications.
3. Intergranular Corrosion Resistance
Низкое содержание углерода минимизирует сенсибилизация во время сварки.
Maintains resistance to intergranular corrosion (IGC) в сварных соединениях.
4. Resistance to Chemical Attack
Хорошо работает в oxidizing acids such as nitric acid.
Provides moderate resistance to reducing acids (e.g., hydrochloric acid) under controlled conditions.
Excellent choice for chemical reactors, tanks, and piping handling aggressive fluids.
5. Ограничения
Like other austenitic stainless steels, 317L can be susceptible to:
Stress corrosion cracking (SCC) in hot chloride solutions
Localized attack in highly acidic or strongly reducing environments
6. Applications Related to Corrosion Resistance
Chemical and petrochemical equipment
Marine and seawater-exposed components
Food and pharmaceutical processing machinery
Heat exchangers, piping, and storage tanks
Резюме
317L stainless steel provides excellent overall corrosion resistance, with superior performance in chloride-rich and oxidizing environments due to its high molybdenum content and low carbon. Its combination of corrosion resistance, weldability, and formability делает его идеальным для chemical, marine, pharmaceutical, and industrial applications.
Холодная обработка
Cold Working of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel который демонстрирует good ductility and formability, making it suitable for a variety of cold working operations. Cold working increases strength through наклеп while retaining corrosion resistance.
1. Распространенные рабочие процессы при простуде
Гибка и формовка Can be shaped into complex geometries for tanks, piping, and structural components.
Катание: Suitable for sheets, strips, and coils.
Deep Drawing: Can produce containers, trays, and intricate components.
Stamping and Punching: Used in chemical, marine, and industrial applications.
2. Наклеп
317L Труд закаляет быстро, увеличивая предел прочности и предел текучести во время деформации.
Excessive cold working can reduce ductility.
Промежуточный отжиг is recommended for extensive forming to restore ductility and relieve internal stresses.
3. Соображения по изготовлению
Использовать постепенная деформация чтобы избежать трещин или чрезмерного напряжения материала.
Proper tooling, lubrication, and support are essential for maintaining surface finish and dimensional accuracy.
Детали, подвергнутые холодной обработке, могут требовать снятие стресса for critical applications.
4. Приложения, связанные с холодной обработкой
Оборудование для химической и нефтехимической промышленности
Marine components exposed to seawater
Food and pharmaceutical processing machinery
Tanks, piping, and structural parts requiring corrosion resistance
Резюме
317L stainless steel exhibits excellent cold working characteristics, allowing bending, rolling, deep drawing, and stamping. Cold working enhances strength while maintaining коррозионная стойкость, making 317L ideal for chemical, marine, pharmaceutical, and industrial applications.
Термообработка
Heat Treatment of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel. Its strength is primarily derived from its austenitic structure and work hardening, so it is not hardenable by conventional heat treatment methods. Heat treatment is mainly used for annealing, stress relief, and restoring ductility after cold working or welding.
Отжиг
Purpose: Restore ductility, relieve stresses, and improve corrosion resistance after cold working or welding.
Typical temperature: 1040–1120°C (1900–2050°F).
Cooling method: Rapid cooling, typically in air or water, to maintain corrosion resistance.
2. Снятие стресса
Applied to reduce internal stresses from forming, welding, or machining.
Диапазон температур: 450–650°C (840–1200°F).
Ensures dimensional stability and reduces risk of distortion or cracking.
3. Влияние термической обработки
Restores ductility and toughness in heavily cold-worked areas.
Eliminates residual stresses from welding or fabrication.
Делает не значительно увеличить силу, as 317L is not precipitation-hardenable.
4. Post-Treatment Surface Finishing
Pickling or passivation may be applied after heat treatment to remove oxides and restore the protective chromium oxide layer for optimal corrosion resistance.
5. Применение, связанное с термообработкой
Welded piping, tanks, and vessels in chemical processing
Heat exchangers and reactors requiring dimensional stability
Marine and pharmaceutical equipment exposed to high temperatures
Резюме
Heat treatment of 317L stainless steel is used primarily for annealing and stress relief, поддерживая ductility, corrosion resistance, and dimensional stability. It ensures reliable performance in chemical, marine, pharmaceutical, and industrial applications, especially after fabrication or welding.
Теплостойкость
Heat Resistance of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel with good resistance to oxidation and scaling at elevated temperatures. Its chemical composition allows it to maintain corrosion resistance and mechanical integrity in moderately high-temperature applications.
1. Температура непрерывной эксплуатации
Подходит для continuous service up to approximately 870°C (1600°F) in oxidizing atmospheres.
Maintains mechanical strength and corrosion resistance under sustained heat exposure.
2. Прерывистое воздействие
выдерживать short-term or intermittent exposures up to 925°C (1700°F) without significant scaling or oxidation.
Подходит для компонентов, подверженных термическое циклирование или колеблющиеся высокие температуры.
3. Технологичность при окислении
Образует стабильное оксидная пленка хрома that protects against scaling and oxidation.
High molybdenum content enhances resistance to localized attack during high-temperature exposure.
4. Ограничения
Not suitable for prolonged service at extremely high temperatures (>925°C / 1700°F).
May be susceptible to crevice or stress corrosion cracking in hot chloride-containing environments.
5. Применение, связанное с жаростойкостью
Heat exchangers, boilers, and furnace components in chemical and petrochemical industries
Трубопроводы и резервуары для высоких температур
Marine equipment exposed to elevated temperatures
Industrial equipment requiring moderate heat resistance combined with corrosion resistance
Резюме
317L stainless steel provides good heat resistance for continuous service up to 870°C и периодическое воздействие до 925°C, while maintaining corrosion resistance and mechanical integrity. Its combination of heat resistance, corrosion resistance, and weldability делает его подходящим для chemical, marine, pharmaceutical, and industrial applications.
Горячая обработка
Hot Working of 317L Stainless Steel
317L stainless steel это low-carbon, high-molybdenum austenitic stainless steel with good hot workability. Hot working allows shaping and forming at elevated temperatures while minimizing work hardening and maintaining mechanical integrity.
1. Hot Working Temperature
Recommended hot working range: 1150–900°C (2100–1650°F).
Надлежащий контроль температуры предотвращает рост зерна and preserves corrosion resistance and strength.
2. Горячая обработка
Горячая прокатка: Производит листы, плиты и полосы с равномерной толщиной.
Ковка Suitable for structural components and high-temperature parts.
Экструзия Enables production of rods, tubes, and profiles.
Hot Pressing and Forming: Useful for shaping complex geometries with minimal risk of cracking.
3. Преимущества горячей обработки
Уменьшает наклеп по сравнению с холодной обработкой.
Улучшает пластичность и вязкость in the finished component.
Facilitates the production of large, thick, or complex parts.
4. Обработка после горячей деформации
Отжиг may be applied to restore uniform mechanical properties and relieve residual stresses.
Травление или пассивация улучшает стойкость поверхности к коррозии после горячей обработки.
5. Приложения, связанные с горячей обработкой
Heat exchangers, furnace components, and high-temperature piping
Structural components for petrochemical and power generation equipment
Industrial parts requiring high-temperature performance and corrosion resistance
Резюме
317L stainless steel exhibits отличные характеристики при горячей обработке, allowing rolling, forging, extrusion, and complex forming at 1150–900°C. Hot working reduces work hardening, enhances ductility, and enables the production of parts for chemical, marine, pharmaceutical, and industrial high-temperature applications.
