В сталелитейной промышленности, отожженная стальная полоса и quenched & закаленный (вопрос&Т) стальная полоса are two of the most essential material grades. Although they are produced from similar high-carbon or alloy steels, the manufacturing process, mechanical properties, and application fields are completely different. Understanding these differences helps manufacturers, sourcing managers, and end users select the right material for their tools, источники, лезвия, and industrial components.
В этой статье, we compare annealed steel strip and quenched & tempered steel strip from process, твердость, сила, и Приложения, helping you make the correct decision for your production needs.
1. What Is Annealed Steel Strip?
Отожженная стальная полоса is steel that has undergone a softening heat treatment—known as отжиг—to improve its ductility, workability, and uniformity. During annealing, the steel is heated to a controlled temperature and then slowly cooled, restructuring the metal’s internal grain for improved plasticity.
Key Features of Annealed Steel Strip
- Soft hardness (typically 150–220 HV depending on grade)
- Excellent formability for stamping, punching, изгиб, and deep drawing
- Good surface quality and uniform mechanical properties
- Easy to do secondary heat treatment (such as quenching and tempering later)
Common Applications
Annealed steel strip is widely used in industries requiring intensive shaping before hardening:
- Пружины (after secondary heat treatment)
- Hardware parts
- Shoe materials
- Automotive components
- Saw blade bodies
- Knife blanks
- Electronic components
For manufacturers who need to резать, form, or machine the steel strip first, annealed steel is the most practical option.
2. What Is Quenched & Полоса из закаленной стали?
Закаленный & tempered steel strip is steel that has undergone two essential heat treatments:
- закалка – heating to high temperature and rapidly cooling to achieve high hardness
- Закалка – reheating at a lower temperature to adjust toughness and reduce brittleness
This results in a material that is very hard, сильный, and wear-resistant, perfect for cutting tools, автомобильные детали, лезвия пилы, and high-performance springs.
Key Features of Q&T Steel Strip
- Высокая твердость (often 40–52 HRC depending on steel grade)
- Высокая прочность на растяжение and excellent fatigue resistance
- Superior wear resistance for demanding environments
- Ready-for-use: no need for secondary heat treatment
Common Applications
Закаленный & tempered strip is ideal for final-performance components:
- Ленточные пилы
- Hacksaw and reciprocating saw blades
- Промышленные ножи
- Scraper blades
- Springs with high performance requirements
- Automotive clutch plates and shims
- Режущие инструменты
Manufacturers choose Q&T steel when they need finished, hardened material ready to be processed into tools or components.
3. Key Differences at a Glance
| Категория | Отожженная стальная полоса | Закаленный & Полоса из закаленной стали |
|---|---|---|
| Твердость | Low (Мягкий) | Высокий (Жесткий) |
| Предел прочности | Medium | Very High |
| Workability | Excellent (easy to bend/form) | Poor (brittle before machining) |
| Can I shape or punch it? | Да | Very difficult |
| Термическая обработка | Fully annealed | Закаленный + закаленный |
| Best For | Manufacturing processes before hardening | Finished tools and high-strength parts |
If you need to shape first, harden later, choose отожженный.
If you need performance and strength immediately, choose вопрос&Т.
4. Which One Should You Choose?
Your selection depends on your production workflow:
✔ Choose Отожженная стальная полоса if:
- You need soft steel for bending, punching, сварка, stamping
- Your final product requires heat treatment after forming
- You produce springs, hardware parts, or stamped components
✔ Choose Закаленный & Полоса из закаленной стали if:
- You need high hardness and strength directly from the supplier
- You manufacture blades, saws, or cutting tools
- You want consistent performance and do not plan additional heat treatment
5. Jiaxiao MTC – Your Reliable Supplier for Both Annealed and Q&T Steel Strip
В Цзясяо МТС (Cgoodsteel), we supply a full range of high-carbon steel, легированная сталь, and stainless steel strips in both отожженный и quenched & закаленный условия.
Our materials serve:
- Пружины
- Ленточные пилы
- Knives and cutting tools
- Automotive precision parts
- Woodworking and construction tools
If you need professional advice on selecting the correct steel strip type, our technical team will assist you based on hardness, предел прочности, and application requirements.
