1. Обзор
60Si2Mn (equivalent to SUP7 in JIS) это silicon-manganese alloy spring steel well known for its высокая прочность, прочность, и превосходная усталостная устойчивость.
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.
