Table of content
Introduction
If you are new to the construction industry, you may often hear the names red iron and cold-formed steel. They are mostly used in building shops, factories, barns, etc. So what do these two mean? What is the difference? Which one is stronger? Which one is more affordable? So let’s read the following content with these questions and find the answers.
What is the Difference Between Red Iron and Cold-Formed Steel?
Red Iron Steel is a heavy I-beam steel coated with red oxide to prevent rust. It is a kind of structural steel. Cold-formed steel is made of thin steel sheets through machine pressing and is mostly used to build some lighter frame structures.
Red Iron Steel: Strong and Rigid
Red Iron Steel is also often called “rigid frame steel” because of the red oxide anti-rust paint on the surface. This steel is produced by hot rolling and can be used in some large load-bearing structures.
Key Features:
- Thicker and heavier
- Flexible connection methods, can be welded or bolted
- Mostly used in industrial industries with large load-bearing capacity
Advantages:
- Good strength and stability
- Suitable for wide and large spans
- Long service life
- Can withstand harsh environments
Cold-Formed Steel: Lightweight and Fast
Cold-Formed Steel is a steel plate that is pressed into a C-shaped or Z-shaped channel by a machine. This production process is completed at room temperature. Therefore, the load-bearing capacity is relatively weak, and it is mostly used in some small buildings and places that require rapid construction.
Key Features:
- Lightweight steel structure
- The connection method is mostly bolted
- Can be used for some small buildings such as residences, shops and garages
- Can also be DIY or build temporary houses
Advantages:
- Short construction period
- Low cost
- Easy to install and transport
- Better DIY performance
Is Red Iron Stronger Than Cold-Formed Steel?
Yes, red iron is stronger
Because red iron steel uses solid I-beams, cold-formed steel uses steel plates bent. In some large-span projects (over 40-60 feet or projects that need to withstand heavy snow and wind loads), red iron steel can be preferred.
| Feature | Red Iron Steel | Cold-Formed Steel |
|---|---|---|
| Material Thickness | Thick I-beams | Thin steel sheets |
| Load Capacity | Very high | Moderate |
| Span Width | 60+ ft possible | Best under 40 ft |
| Ideal Use | Factories, warehouses | Garages, shops, homes |
Which Is Cheaper: Cold-Formed or Red Iron?
Cold-formed steel is cheaper. If you need to build some heavy-duty and long-term projects. The overall cost of red iron steel is lower.
Cost Factors:
Cold-formed steel is lighter, which means: lower transportation costs.
Cold-formed steel connections do not require welding, which means: lower labor costs.
Red iron steel installation requires heavy installation equipment, which means higher installation costs.
In terms of long-term investment utilization, red iron steel is better in large buildings.
When Should You Use Red Iron Steel?
Red Iron Steel can be used in the following projects:
- Large open-structure buildings
- High-load bearing buildings
- High wind or snow loads
- Long-term durability
Perfect for:
- Commercial buildings
- Agricultural and industrial warehouses
- Factories
When Should You Use Cold-Formed Steel?
Use cold-formed steel in the following projects:
- Projects that need to be erected quickly
- Fast span factories (less than 60 feet)
- Building small warehouses
- Projects that require DIY
Perfect for:
- Garages
- Temporary homes
- Small factories and warehouses
Cold-Formed Steel vs Red Iron for Barndominiums
Barndominiums are characterized by metal frames and open interior spaces. Both red iron and cold-formed steel can be used.
Here are the characteristics of the two types of steel:
Cold-Formed Barndominium:
- Lower cost
- Quicker to erect
- Easier to use
- Suitable for homes less than 2,500 square feet.
Red iron barn-style house:
- Higher strength
- Suitable for long-term use
- More suitable for large-sized or two-story houses
Choose the appropriate steel section according to specific needs.
Summary
After reading the above, I believe you have a better understanding of red iron steel and cold-formed steel. The two mainly focus on the following points in project selection:
Red iron steel: high strength, strong durability, large project scale, and strong load-bearing projects.
Cold-formed steel: small projects that can be built quickly, with limited budgets, and for temporary use.
Which steel section to choose depends on your own project and budget.
