3003 vs 3105 Aluminum Coil: Which Is Better for Roofing and Gutters?

When sourcing color coated aluminum coil for roofing systems, seamless gutters, wall cladding, and architectural projects, two alloys are commonly considered: 3003 aluminum coil and 3105 aluminum coil.

Although both alloys provide excellent corrosion resistance and formability, they differ in strength, rigidity, and long-term performance.

What Is 3003 Aluminum Coil?

3003 aluminum coil is one of the most widely used alloys in the construction industry.

Main Advantages of 3003 Aluminum Coil

• Excellent corrosion resistance

• Easy forming and bending

• Competitive price

• Suitable for ACP panels and roofing

Common Applications

• ACP Panels

• Ceiling Systems

• Interior Decoration

• Roofing Panels

What Is 3105 Aluminum Coil?

3105 aluminum coil contains additional magnesium, which improves strength and rigidity compared to 3003 alloy.

Main Advantages of 3105 Aluminum Coil

• Higher strength

• Better dent resistance

• Excellent outdoor durability

• Ideal for gutter manufacturing

Common Applications

• Rainwater Gutters

• Roofing Systems

• Wall Cladding

• Architectural Panels

3003 vs 3105 Aluminum Coil Comparison

Which Alloy Is Better for Roofing?

Both alloys are suitable for roofing applications. However, the final choice depends on project requirements.

Choose 3003 Aluminum Coil If:

• Your project has a strict budget.

• You require complex forming.

• You need excellent ductility.

Choose 3105 Aluminum Coil If:

• Higher strength is required.

• The roofing system is exposed to harsh weather.

• Long-term durability is important.

Why 3105 Aluminum Coil Is Preferred for Gutters

Most North American seamless gutter manufacturers prefer 3105 aluminum coil because of its higher strength and superior roll-forming performance.

• Better dent resistance

• Improved rigidity

• Longer service life

• Better forming performance

Related Products

• 3003 Color Coated Aluminum Coil

• 3105 Aluminum Gutter Coil

• PVDF Coated Aluminum Coil

• Architectural Aluminum Coil

Frequently Asked Questions

Is 3105 stronger than 3003 aluminum?

Yes. 3105 aluminum coil generally provides higher tensile strength and yield strength.

Which alloy is best for seamless gutters?

3105 H24 aluminum coil is widely used for seamless gutter manufacturing.

Can both alloys be color coated?

Yes. Both alloys can be coated with PE, SMP, HDP, and PVDF coating systems.

Which alloy offers better outdoor performance?

Both perform well outdoors, but 3105 generally provides better long-term durability.

Contact Us

Changzhou Dingang Metal Materials Co., Ltd.

Professional Manufacturer of Color Coated Aluminum Coil

Email: mia@cnchangsong.com

WhatsApp: +86  177 5135 3450

Website: https://www.dingang.com