1. Обзор
50КрВ4, known internationally as AISI 6150 or SUP10, это chromium-vanadium alloy spring steel that combines high strength, elasticity, and toughness.
It is particularly suitable for automotive suspension springs, clutches, and high-stress mechanical components where resistance to fatigue and shock loading is critical.
Jiaxiao MTC produces 50CrV4 alloy steel strips в закаленный и закаленный или холоднокатаный отожженный условия, ensuring precise control of hardness, обработка поверхности, and dimensional tolerances.
2. Химический состав и эквивалентные марки
| Стандартный | Эквивалентные оценки | С (%) | Мин. (%) | И (%) | Кр (%) | В (%) | Р макс. | S макс. |
|---|---|---|---|---|---|---|---|---|
| ОТ | 50КрВ4 | 0.47–0.55 | 0.70–1,10 | 0.15–0.40 | 0.90–1.20 | 0.10–0.25 | ≤0,035 | ≤0,035 |
| АИСИ | 6150 | — | — | — | — | — | — | — |
| ОН | СУП10 | — | — | — | — | — | — | — |
Chromium improves hardenability and wear resistance, while vanadium refines the grain structure, improving strength and fatigue performance.
3. Production and Heat Treatment Process
50CrV4 strips are produced through a multi-stage precision rolling and thermal treatment process:
- Hot Rolled Coils — sourced from ISO-certified steel mills.
- Кислотное травление — removal of oxidation and surface impurities.
- Холодная прокатка — reduces thickness and enhances dimensional accuracy.
- Отжиг (optional) — improves ductility for cold forming.
- Закалка и отпуск — precise heat treatment in controlled atmosphere furnaces.
- Закалка: Heated above the austenitizing temperature (приблизительно. 850°C–880°C) and quenched.
- Закалка: Reheated to 400–600°C to achieve desired balance between hardness and toughness.
This sequence provides a fine-grained structure with uniform hardness and improved resilience under repeated stress.
4. Механические свойства
| Состояние | Твердость | Предел прочности | Elastic Limit | Чистота поверхности | Edge Options |
|---|---|---|---|---|---|
| Отожженный | ≤200 ВН | 600–800 Н/мм² | Medium | Яркий / Полированный | Мельница / щель |
| Закаленный & Закаленный | 40–52 HRС | 1400–1800 Н/мм² | Высокий | Синий / Желтый / Полированный | Квадрат / Закругленный |
Диапазон толщины: 0.1–5,0 мм
Диапазон ширины: 10–500 мм
Edge Finish: щель, квадрат, or rounded according to customer requirements.
5. Key Features of 50CrV4 Alloy Steel Strip
- Excellent strength-to-weight ratio и высокая усталостная устойчивость
- Stable spring properties under cyclic stress
- Superior износостойкость и shock absorption
- Consistent heat treatment response and machinability
- Uniform flatness achieved through precision levelling and tension control
6. Приложения
50CrV4 alloy steel strips are widely used in industries requiring durability under dynamic loads и controlled elasticity:
- Автомобильные компоненты
- Leaf springs, диски сцепления, клапанные пружины, and safety parts
- Промышленное оборудование
- Пружины, discs, and precision washers
- Construction Tools
- Trowels, скребки, and blades with high flexibility requirements
- Power Transmission
- Flexible couplings and dampening elements
Its combination of strength and toughness also makes it suitable for cold-forming operations prior to hardening and tempering.
7. Tolerances and Quality Control
Jiaxiao MTC follows strict tolerance classes according to DIN/EN standards:
- Допуск по толщине: ±0,015–0,070 мм
- Допуск по ширине: ±0,20–0,80 мм
- Straightness deviation: within R1–R4 class
- Flatness tolerance: ≤0.1–0.3% of strip width
All coils are tested for:
- Chemical composition (spectrometer analysis)
- Hardness and tensile strength (Викерс, Роквелл, and Brinell)
- Surface quality and microstructure
8. Упаковка и доставка
Each 50CrV4 coil is lightly oiled и wrapped in anti-rust paper and plastic film, then placed on wooden pallets or into 20ft sea-worthy containers.
Customized packing and labeling available upon request.
9. О Цзясяо МТС
Guangzhou Jiaxiao Material Technology Co., ООО.
is a trusted manufacturer and exporter of Высокий углерод, сплав, и полоски из нержавеющей стали в обоих отожженный и закаленный & закаленный формы.
С более чем 20 years of experience and advanced facilities for холодная прокатка, отжиг, закалка, and tempering, Jiaxiao MTC provides tailored steel solutions for автомобильный, весна, tool, and hardware industries.
