Understanding Sheet Metal Mild Steel: Types, Parameters, Applications, and Finishing
For successful carbon steel fabrication – choosing the right grade and technique is essential.
This guide will help you select the appropriate carbon steel types and recommend effective fabrication methods. At the end, you’ll discover valuable resources as well.
Let’s dive in:
Carbon steel sheet metal
Carbon steel sheet metal is a widely used material in sheet metal fabrication, known for its strength, durability, and cost-effectiveness. Its versatility makes it ideal for various industries, from automotive to construction. However, choosing the right type of carbon steel for your project is crucial, as different grades offer distinct characteristics based on their carbon content, mechanical properties, and finish options.

Key Parameters for Carbon Steel Sheet Metal Selection
- Carbon Content: Higher carbon content increases strength and hardness but reduces ductility.
- Tensile Strength: Varies between 400 to 900+ MPa, depending on carbon content and alloying elements.
- Machinability: Low carbon steel is easier to machine, while high-carbon and ultra-high-carbon steels may require specialized tooling.
- Weldability: Low carbon steels offer excellent weldability, while higher carbon grades can become brittle and crack under certain conditions.
Types of Carbon Steel Sheet Metal
Carbon steel comes in multiple grades, each offering distinct characteristics. The tensile and yield strengths of carbon steel can vary significantly between these grades.
Low Carbon Steel (Mild Steel):
- Carbon Content: 0.05% – 0.25%
- Tensile Strength: 400-550 MPa
- Ductility: High
Applications: Ideal for forming and welding applications like automotive panels, structural components, and pipes due to its malleability and weldability.
Medium Carbon Steel:
- Carbon Content: 0.25% – 0.60%
- Tensile Strength: 500-600 MPa
- Ductility: Moderate
Applications: Used in applications requiring greater strength than mild steel, such as gears, axles, and railways. It offers a good balance of toughness and strength.
High Carbon Steel:
- Carbon Content: 0.60% – 1.25%
- Tensile Strength: 600-900 MPa
- Ductility: Low
Applications: Ideal for applications requiring hardness and wear resistance, such as cutting tools, springs, and wires. However, it can be more brittle than lower-carbon steels.
Ultra High Carbon Steel:
- Carbon Content: > 1.25%
- Tensile Strength: > 900 MPa
- Ductility: Very low
Applications: Typically used in specialized applications like knives, punches, and springs. Due to its hardness, this steel is challenging to work with and requires specific machining processes.
Limitations of Carbon Steel Sheet Metal
Despite its many advantages, carbon steel has some limitations:
- Corrosion: Without proper surface treatment, carbon steel is prone to rust, particularly in humid or corrosive environments.
- Brittleness: Higher carbon grades can become brittle, making them unsuitable for applications requiring flexibility or impact resistance.
- Weldability: High-carbon steels require more advanced welding techniques to avoid cracking or other issues.
Conclusion
If you’re looking for high-quality carbon steel for your project, our team is here to help. We specialize in fabricating parts from a variety of carbon steel grades, tailored to your specific needs.
We make it easy to move from design to production. Simply send us your drawings, and within 1 hour, we’ll provide a comprehensive quote tailored to your
Send us your drawings today for a customized quote, and let us guide you through the material selection, surface finishing, and fabrication process.