AZ50 Aluzinc Steel Roll Forming Material Guide: Light Coating, Coil Sizes & Uses

AZ50 Aluzinc Steel Roll Forming Material

1. Overview of AZ50 Aluzinc Steel in Roll Forming

AZ50 Aluzinc steel is a light aluminum-zinc coated steel with a coating weight of 50 g/m² (total both sides). It is designed for applications where basic corrosion resistance is required but cost control is a priority.

The coating composition is typically 55% aluminum, 43.4% zinc, and 1.6% silicon, providing a balance of corrosion protection and heat resistance. Compared to AZ150, AZ50 offers lower durability but is significantly more cost-effective.

In roll forming, AZ50 is commonly used for indoor applications, light-duty roofing, and non-critical structural components where exposure to harsh environments is limited.

2. Material Composition & Structure

AZ50 Aluzinc steel consists of:

Steel base (cold rolled steel)
Aluminum-zinc alloy coating

Coating Composition:

55% Aluminum
43.4% Zinc
1.6% Silicon

Layer Structure:

Steel core
Aluminum-zinc coating (light layer)
Protective oxide layer

3. Available Coil Specifications

Thickness Range

0.3mm – 2.5mm

Coil Width

600mm – 1250mm

Coil Weight

3 tons – 10 tons

Coil ID / OD

ID: 508mm / 610mm
OD: up to 1400mm

Tolerance

Tight thickness tolerance
Good flatness for roll forming

4. Mechanical Properties

Typical values:

Yield Strength: 230 – 550 MPa
Tensile Strength: 300 – 700 MPa
Elongation: 15% – 30%
Hardness: 120 – 200 HB

Grades:

AZ50 coating grade
DX51D / S320GD

5. Coating Types

Aluzinc Coating (AZ50)

50 g/m² total

Coating Thickness

Approx. 7–10 microns

Lifespan

Indoor: 10–20 years
Outdoor: limited (not recommended for long-term exposure)

Cost Level

6. Surface Finishes

Smooth metallic finish
Fine spangle pattern
Reflective surface
Suitable for further coating

7. Common Roll Forming Applications

AZ50 Aluzinc steel is used in:

Indoor roofing systems
Wall panels (interior use)
Ceiling systems
HVAC ducting
Light industrial components
Temporary structures

8. Advantages of AZ50 Aluzinc Steel

Low cost
Lightweight coating
Good formability
Smooth surface finish
Suitable for indoor applications

9. Disadvantages / Limitations

Limited corrosion resistance
Not suitable for outdoor exposure
Shorter lifespan compared to AZ100/AZ150
Edge protection limited

10. Roll Forming Machine Considerations

Roll Tooling

Standard chrome plated rollers
Smooth surfaces recommended

Speed

20–60 m/min

Lubrication

Not typically required

Cutting

Hydraulic or flying shear
Standard blade setup

Common Issues

Edge corrosion
Surface scratches
Limited durability in forming

11. Common Problems in Production

Edge corrosion in exposed areas
Surface scratching
Oil canning in thin material
Coil camber affecting tracking
Handling damage

12. Pricing Guide

Typical global pricing:

Low: $800–$1000 per ton
Medium: $1000–$1200 per ton
High: $1200–$1400+ per ton

Factors affecting price:

Coating level
Thickness
Steel grade
Supplier

13. Comparison with Other Materials

AZ50 vs AZ150

AZ50 = lower cost
AZ150 = higher corrosion resistance

AZ50 vs Galvanized Steel (Z275)

AZ50 = better heat reflectivity
Z275 = better edge protection

AZ50 vs Aluminum

AZ50 = stronger
Aluminum = better corrosion resistance

14. Best Industries Using AZ50 Aluzinc Steel

Indoor construction
HVAC systems
Industrial interiors
Storage systems
Temporary structures

15. How to Choose AZ50 Aluzinc Steel

Choose AZ50 When:

Indoor use
Cost-sensitive projects
Light-duty applications
Minimal exposure to moisture

Avoid When:

Outdoor or coastal environments
Long lifespan required
Structural heavy-duty applications

16. FAQ Section

What is AZ50 Aluzinc steel?

It is Aluzinc steel with a 50 g/m² coating.

Is AZ50 suitable for roofing?

Only for indoor or temporary roofing.

Is AZ50 cheaper than AZ150?

Yes, significantly cheaper.

Can AZ50 be used outdoors?

Not recommended for long-term use.

What is the lifespan of AZ50?

10–20 years indoors.

17. Machine Matcher Section

We supply roll forming machines for all material types including AZ50 Aluzinc steel.

Custom-built machines to your profile
New machines built to specification
Global delivery available
UK and USA technical support

Contact:
Machine Matcher
Sales & Technical Team

Quick Specs

Thickness
0.3–2.5mm

Yield Strength
230–550 MPa

Coil Width
600–1250mm

Coil ID
508 / 610mm