1. Обзор
60Si2Mn (equivalent to SUP7 in JIS) это silicon-manganese alloy spring steel well known for its высокая прочность, прочность, and superior fatigue resistance.
It is one of the most widely used spring steels for automotive suspension, mechanical springs, and heavy-load applications.
Jiaxiao MTC supplies 60Si2Mn alloy steel strips в обоих холоднокатаный, отожженный и закаленный & закаленный условия, providing customers with stable performance, excellent flatness, and tight dimensional tolerances.
2. Химический состав и эквивалентные марки
| Стандартный | Эквивалентные оценки | С (%) | Мин. (%) | И (%) | Р макс. | S макс. |
|---|---|---|---|---|---|---|
| ОТ | 60Si2Mn | 0.52–0.65 | 0.60–0.90 | 1.50–2.00 | ≤0,035 | ≤0,035 |
| ОН | SUP7 | — | — | — | — | — |
The high silicon content (до 2.00%) provides excellent elasticity and fatigue resistance, while manganese contributes to toughness and hardenability.
3. Production and Heat Treatment
Jiaxiao MTC utilizes a complete in-house production line to ensure quality consistency:
- Выбор сырья:
High-quality hot rolled steel coils from ISO-certified sources. - Кислотное травление:
Removes oxide layers and impurities to ensure a clean surface before rolling. - Холодная прокатка:
Reduces thickness and enhances precision, with tight control over flatness. - Отжиг (for soft condition):
Improves ductility for subsequent forming or stamping processes. - Закалка и отпуск (for finished condition):
- Температура затвердевания: приблизительно. 850–880°C
- Температура отпуска: 400–550°C
This treatment yields an optimal balance of high tensile strength, elasticity, и impact toughness.
- Edge and Surface Finishing:
Options include полированный, яркий, или blue/yellow tempered surfaces, с щель, округлый, или квадрат edges.
4. Механические свойства
| Состояние | Твердость | Предел прочности | Elastic Limit | Чистота поверхности | Тип края |
|---|---|---|---|---|---|
| Отожженный | ≤200 ВН | 600–800 Н/мм² | Medium | Яркий / Полированный | щель / Мельница |
| Закаленный & Закаленный | 45–52 HRС | 1500–1800 Н/мм² | Высокий | Синий / Желтый / Полированный | Закругленный / Квадрат |
Available Dimensions:
- Толщина: 0.10–5.00 mm
- Ширина: до 500 мм
- Hardness Range: 30–55 HRС
5. Material Characteristics
- Высокая прочность:
Achieved through silicon-manganese alloying and precision tempering. - Excellent Fatigue Resistance:
Suitable for components under cyclic and dynamic loads. - Good Ductility and Elasticity:
Allows cold forming prior to final heat treatment. - High Hardenability:
Ensures uniform structure and mechanical performance across thickness. - Consistent Surface Quality:
Controlled rolling and polishing provide smooth, bright finishes with minimal decarburization.
6. Типичные применения
60Si2Mn steel strips are widely used in applications requiring resilient and durable spring materials, включая:
- Автомобильная промышленность:
Leaf springs, suspension components, пружины сцепления, and safety devices. - Mechanical Engineering:
Плоские пружины, pressure washers, and energy-absorbing parts. - Construction Tools:
Лезвия, скребки, and trowels that demand strength and flexibility. - Hardware Manufacturing:
Metal clips, мебельная фурнитура, and industrial connectors.
The material’s balance between предел прочности и elastic recovery makes it a benchmark grade in high-performance spring manufacturing.
7. Tolerances and Quality Control
Jiaxiao MTC ensures precise control of dimensional and mechanical parameters:
- Допуск по толщине: ±0,015–0,070 мм
- Допуск по ширине: ±0,20–0,80 мм
- Отклонение от плоскостности: ≤0,3% ширины
- Straightness deviation: R1–R4 standard
Each production lot is tested for:
- Chemical composition accuracy
- Vickers and Rockwell hardness
- Tensile strength and elongation
- Surface finish and flatness
Quality inspection is conducted with advanced laboratory equipment to meet international standards.
8. Упаковка и доставка
Каждая катушка:
- Слегка смазанный маслом to prevent oxidation,
- Wrapped in anti-rust paper and plastic film,
- Packed in seaworthy wooden pallets or containers,
ensuring safe delivery and corrosion-free transport to customers worldwide.
9. О Цзясяо МТС
Guangzhou Jiaxiao Material Technology Co., ООО.
is a professional supplier of высокая углеродистая сталь, легированная сталь, и полоски из нержавеющей стали в обоих закаленный & закаленный и холоднокатаный, отожженный условия.
With a manufacturing area of 25,000 м² and an annual capacity of 15,000 тонны, Jiaxiao MTC serves the автомобильный, весна, аппаратное обеспечение, and tooling industries with reliable quality and precision products.
