When it comes to components requiring high strength, durability, and spring-like properties, few materials perform as reliably as hardened and tempered steel strips. From saw blades to shutter springs, this specialized steel undergoes a rigorous heat treatment process to achieve the perfect balance between hardness and toughness—a balance critical to performance in demanding environments.
In this article, we break down what hardened and tempered steel strips are, how they’re made, and where they’re used—offering practical insight for engineers, buyers, and manufacturers across industries.
? What is Hardened and Tempered Steel Strip?
Hardened and tempered steel strip refers to steel that has undergone a two-stage heat treatment process:
- Hardening – Steel is heated above its critical temperature and then rapidly cooled (quenched), transforming its internal structure to become very hard but also brittle.
- Tempering – The hardened steel is reheated to a lower temperature and held for a controlled time. This reduces brittleness while retaining high hardness, improving toughness and elasticity.
The result? A steel strip that resists wear, holds shape under stress, and delivers long-term reliability in mechanical or spring-loaded applications.
? How It’s Made: JiaxiaoMTC’s Precision Process
At Jiaxiao Material Technology Co., Ltd., hardened and tempered strips are produced using a vertically integrated process with strict control over:
- Raw material: High-quality hot rolled coils from ISO-certified mills
- Cold rolling: To achieve tight thickness and width tolerances
- Heat treatment: Precision quenching and tempering in inert atmosphere
- Edge finishing: Slit, square, or round edges for safety and function
- Surface finish: Natural, blue, yellow, white, or polished, per application
Size Range:
- Thickness: 0.10 mm to 5.00 mm
- Width: 2 mm to 500 mm
- Hardness: 30–55 HRC
This meticulous process ensures the strip steel is not only dimensionally accurate but also mechanically consistent—an essential factor for critical components.
? Applications of Hardened & Tempered Steel Strip
These steel strips are widely used across industries where load-bearing, spring-back, or cutting properties are required:
- Rolling shutter springs
- Band saw blades and knives
- Putty knives, trowels, scrapers
- Shoe insoles and toe caps
- Flat springs and clips
Especially in shutter springs, JiaxiaoMTC’s C67S, C75S, and C80 spring steel strips are praised for their resilience and flexibility—critical qualities that ensure the spring bends without breaking under repeated stress.
? Why Choose Hardened Steel Over Annealed?
| Property | Hardened & Tempered Strip | Cold Rolled Annealed Strip |
|---|---|---|
| Hardness | High (30–55 HRC) | Low (max 180 HV) |
| Flexibility (Springback) | Excellent | Limited |
| Wear Resistance | Superior | Moderate |
| Formability | Moderate | Excellent |
| Use After Shaping | Yes | Needs post-forming treatment |
If your product needs high surface durability, resistance to deformation, or precise mechanical performance, hardened and tempered steel is the ideal solution.
✅ Why JiaxiaoMTC?
With over 20 years of industry experience, 25,000㎡ production facilities, and an annual capacity of 15,000 tons, JiaxiaoMTC is a trusted name in precision steel strip supply. From sourcing to delivery, every coil undergoes strict quality inspection to ensure you get consistent, reliable performance.
? Final Words
Choosing the right steel strip isn’t just about dimensions—it’s about performance, reliability, and lifecycle cost. Hardened and tempered steel strips from JiaxiaoMTC are engineered to meet the needs of modern manufacturing, whether you’re making tools, springs, or industrial parts.
Interested in sourcing high-performance hardened steel strip?
? Visit gdcgoodsteels.com or contact us to discuss your application.
