Steel strip is widely used in industries such as automotive, tools, construction, and consumer products. While its mechanical properties—like strength, hardness, and elasticity—are critical, the surface finish also plays an important role. Different surface treatments not only enhance appearance but also improve durability, corrosion resistance, and performance.
So, what are the common surface finishing options for steel strip? Let’s take a closer look.
1. Natural Finish
This is the standard finish after cold rolling or heat treatment. It retains the basic metallic appearance of steel, often with a matte or slightly dark surface.
- Advantages: Cost-effective, functional for general applications.
- Applications: Internal components, construction parts, and non-decorative uses.
2. Bright / Polished Finish
Steel strips can be mechanically polished or bright annealed to achieve a smooth, reflective surface.
- Advantages: Enhanced aesthetic appeal, reduced surface roughness, and improved corrosion resistance.
- Applications: Springs, blades, shoe parts, household appliances, and visible precision parts.
3. Colored Finishes (Blue, Yellow, White)
Through controlled tempering or oxidation processes, steel strips can have protective color finishes.
- Blue Steel Strip: Achieved by tempering in a specific atmosphere, giving a dark-blue oxide layer.
- Yellow / White Finishes: Produced via heat treatment, providing additional identification and corrosion resistance.
- Applications: Saw blades, knives, putty knives, scraper blades, and tools requiring both aesthetics and protection.
4. Oiled Surface
Each coil is lightly coated with oil to protect against rust during storage and transport.
- Advantages: Prevents oxidation and corrosion.
- Applications: Export packaging, long-distance shipments.
5. Edge Finishing Options
Apart from surface treatment, the edges of steel strip can also be finished:
- Slit Edge
- Square Edge
- Round Edge
These treatments improve safety, precision, and functionality in downstream applications.
Conclusion
Surface finishing is more than just appearance—it directly affects the performance, durability, and usability of steel strip. Whether it’s bright polished for blades, colored for tools, or oiled for export protection, choosing the right surface finish ensures the steel strip meets your product’s specific requirements.
At Jiaxiao MTC, we supply steel strips with multiple surface and edge finishing options, ensuring precision, reliability, and international quality standards.
