Z100 Galvanized Steel Roll Forming Material Guide: Coating Thickness, Coil Sizes & Uses

Z100 Galvanized Steel Roll Forming Material

1. Overview of Z100 Galvanized Steel in Roll Forming

Z100 galvanized steel is a zinc-coated steel with a coating weight of 100 g/m² (total both sides). It is considered a light coating level and is typically used in indoor or low-corrosion environments where basic protection is sufficient.

In roll forming, Z100 galvanized steel is used for applications that require corrosion resistance but do not face harsh weather or outdoor exposure. It offers a cost-effective alternative to heavier coatings such as Z275 or Z450.

Z100 is commonly produced using the hot dip galvanizing process and is based on a cold rolled steel substrate. It is suitable for light structural components, interior systems, and applications where cost control is important.

2. Material Composition & Structure

Z100 galvanized steel consists of:

Steel base (usually cold rolled steel)
Zinc coating (100 g/m² total both sides)

Layer Structure:

Steel core
Zinc coating (approx. 7–8 microns total)

Surface Types:

Regular spangle
Minimized spangle
Zero spangle

3. Available Coil Specifications

Thickness Range

0.3mm – 3.0mm

Coil Width

600mm – 1500mm

Coil Weight

3 tons – 12 tons

Coil ID / OD

ID: 508mm / 610mm
OD: up to 1500mm

Tolerance

Thickness tolerance: ±0.02–0.04mm
Good flatness for roll forming

4. Mechanical Properties

Typical values:

Yield Strength: 250 – 550 MPa
Tensile Strength: 350 – 700 MPa
Elongation: 15% – 30%
Hardness: 120 – 200 HB

Grades:

DX51D (forming grade)
S320GD / S350GD (structural grades)

5. Coating Types

Zinc Coating (Z100)

100 g/m² total (both sides)

Coating Thickness

Approx. 7–8 microns

Lifespan

Indoor: 10–20+ years
Outdoor: limited (not recommended for exposed environments)

Cost Level

Low (cheaper than Z275 and higher coatings)

6. Surface Finishes

Regular spangle
Minimized spangle
Zero spangle
Smooth finish for further processing

7. Common Roll Forming Applications

Z100 galvanized steel is used in:

Indoor steel framing systems
Ceiling systems and tracks
Cable trays
Electrical enclosures
Light structural components
HVAC systems (indoor ducting)
Storage systems and shelving

8. Advantages of Z100 Galvanized Steel

Lower cost compared to higher coatings
Lightweight zinc layer
Good formability
Suitable for indoor use
Reduced material cost for large projects

9. Disadvantages / Limitations

Limited corrosion resistance
Not suitable for outdoor exposure
Shorter lifespan compared to Z275/Z450
Edge protection is minimal
Can rust in humid environments

10. Roll Forming Machine Considerations

Roll Tooling

Chrome plated rollers recommended
Smooth rollers to protect coating

Speed

20–60 m/min

Lubrication

Typically not required

Cutting

Hydraulic or flying shear
Clean cuts with minimal burr

Common Issues

Coating wear during forming
Scratches from poor tooling
Zinc cracking in tight bends

11. Common Problems in Production

White rust if stored improperly
Surface scratches affecting finish
Coating damage during handling
Uneven forming due to coil quality
Limited protection at cut edges

12. Pricing Guide

Typical global pricing:

Low: $650–$850 per ton
Medium: $850–$1000 per ton
High: $1000–$1200+ per ton

Factors affecting price:

Thickness
Steel grade
Coil size
Supplier and origin

13. Comparison with Other Materials

Z100 vs Z275

Z100 = cheaper, lower protection
Z275 = standard, better durability

Z100 vs Z450

Z100 = light coating
Z450 = heavy-duty corrosion resistance

Z100 vs Electro Galvanized

Z100 = thicker coating, better protection
Electro = smoother finish, thinner coating

14. Best Industries Using Z100 Galvanized Steel

Indoor construction systems
Electrical and HVAC industries
Storage and logistics
Office and commercial fit-outs
Light industrial applications

15. How to Choose Z100 Galvanized Steel

Choose Z100 When:

Indoor use
Cost reduction is important
Light corrosion protection required
High volume production

Avoid When:

Outdoor exposure
Coastal or humid environments
Long lifespan required

16. FAQ Section

What does Z100 mean?

It refers to 100 g/m² zinc coating weight.

Is Z100 suitable for outdoor use?

No, it is mainly for indoor applications.

What thickness is common?

0.3mm to 2.0mm for most applications.

Is it cheaper than Z275?

Yes, significantly cheaper.

Can it be painted?

Yes, it can be used as a base for painting.

17. Machine Matcher Section

We supply roll forming machines for all material types including Z100 galvanized 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
0.3–3.0mm

Yield Strength
250–550 MPa

Coil Width
600–1500mm

Coil ID
508 / 610mm