Aluzinc Sandwich Panel

Aluzinc sandwich panels use aluminum-zinc alloy coated steel (AZ150) as the facing material instead of standard galvanized steel. The AZ150 coating consists of 55% aluminum, 43.4% zinc, and 1.6% silicon, hot-dipped onto cold-rolled steel substrate. This composition provides significantly better corrosion resistance than pure zinc galvanizing — typically 2-3 times longer service life in outdoor environments.

The aluminum component forms a dense oxide barrier that blocks moisture and oxygen, while the zinc component provides galvanic protection at cut edges and scratches. AZ150 coated steel can be used unpainted in C3 corrosivity environments (urban and light industrial). For more aggressive environments, PVDF or polyester coatings are applied on top of the AZ150 base.

These panels are available with PIR, EPS, or rockwool cores depending on the insulation and fire performance required. Standard thicknesses range from 50mm to 200mm with effective widths of 950mm, 1000mm, and 1150mm. Facing thickness spans 0.4mm to 0.8mm.

AZ150 Panel Production and Material Options

We stock AZ150 Galvalume steel coils from certified mills and process them on our roll-forming lines in Hebei. The coil coating weight is verified at 150 g/m² total (both sides) per delivery batch, which is the industry standard for exterior building panels requiring 20+ year service life.

For projects in coastal or high-humidity regions, we recommend AZ150 substrate with PVDF topcoat. Inland industrial applications can use polyester-coated AZ150 or bare AZ150 for cost efficiency. Core options include PIR foam for cold storage, rockwool for fire-rated envelopes, and EPS for budget industrial roofing.

We can match panel profiles to existing building designs:

Corrugated roof and wall profiles
Trapezoidal and standing seam systems
Flat wall panels with concealed fixings

Send us your project requirements for a material specification sheet.

Parameter	Specification
Core Material	PIR / EPS / Rockwool (specify per project)
Core Density	Varies by core type (PIR: 40 kg/m³, Rockwool: 100-140 kg/m³)
Panel Thickness	50, 75, 100, 150, 200 mm
Standard Width	950, 1000, 1150 mm
Panel Length	Up to 12,000 mm (customizable)
Facing Material	Aluzinc Coated Steel Sheet (AZ150)
Coating Composition	55% Al / 43.4% Zn / 1.6% Si
Coating Weight (AZ150)	150 g/m² (total both sides)
Corrosion Resistance	C3 unpainted; C4-C5 with PVDF coating
Steel Thickness	0.4 – 0.8 mm
Thermal Conductivity	Varies by core type
Fire Resistance Classification	Varies by core type
Acoustic Insulation	Varies by core type and thickness
Areal Weight	Varies by core type, thickness, and facing gauge
Application	External Walls, Internal Partitions, Roofing Systems
Installation	Vertical or Horizontal on Single/Multi-Span Structures
Moisture Resistance	Non-absorbent, resistant to humidity

Related Products

Aluzinc Sandwich Panel

Compact Laminate HPL Panel

Corrugated Insulated Panel

EPS Sandwich Panel

Exterior Wall Cladding Panel

Hollow Plastic Formwork

PPGI Sandwich Panel

PIR Sandwich Panel

Plywood Foam Core Panel

Rockwool Sandwich Panel

Snap N Lock Insulated Panel

Z Lock Insulated Panel

AZ150 Aluzinc Panel Material Guide

💡 Pro Tip: AZ150 vs Galvanized Steel for Your Environment
AZ150 (Galvalume) provides 2-3x better corrosion resistance than standard Z275 galvanized steel in outdoor environments. For inland projects, Z275 galvanized is usually sufficient. For coastal or industrial zones with salt spray or sulfur dioxide, specify AZ150 with PVDF coating for 25+ year service life.

1. What makes AZ150 different from regular galvanized steel?

The AZ150 coating contains 55% aluminum and 43.4% zinc. The aluminum forms an oxide barrier that resists atmospheric corrosion, while the zinc provides sacrificial protection at cut edges. Standard galvanized steel (Z275) uses only zinc, which is consumed faster in outdoor exposure. In accelerated weathering tests, AZ150 shows roughly 2-3 times lower corrosion rate than Z275 in the same environment.

2. Which facing material should you choose?

Facing Material	Corrosion Resistance	Best Environment
PPGI (Z275 galvanized)	Standard	Inland, low pollution
AZ150 (Aluzinc/Galvalume)	2-3x better than Z275	Coastal, industrial, humid
Stainless Steel 304	Highest	Food processing, chemical plants
Aluminum	Excellent (no red rust)	Marine, lightweight structures

3. When should you specify PVDF coating over AZ150?

Bare AZ150 is suitable for C3 environments (urban, light industrial). For coastal areas with salt spray (C4-C5), or buildings requiring long-term color retention, specify PVDF coating on top of AZ150. PVDF contains at least 70% fluorocarbon resin and maintains color for 15-20 years under UV exposure. Polyester (PE) coating is a lower-cost option for interior walls or short-term exterior applications.

4. What core options are available with AZ150 facings?

Core Options:

PIR foam: Best thermal insulation, for cold storage and temperature-controlled buildings.
Rockwool: A1 non-combustible, for fire-rated building envelopes and acoustic applications.
EPS: Budget option for cost-sensitive industrial roofing and wall cladding.

5. Where are AZ150 panels commonly used?

Coastal and Industrial Buildings

Warehouse roofing and wall cladding in salt spray or polluted environments where standard galvanized steel would corrode prematurely.

Agricultural and Livestock Facilities

Poultry houses, barns, and storage buildings where ammonia and humidity accelerate corrosion of standard steel.

6. How to handle cut edges and fastener points during installation

AZ150 steel self-heals at cut edges through galvanic action of the zinc component, but in C4-C5 environments, exposed edges should be sealed with zinc-rich paint or butyl tape. Use stainless steel or carbon-steel fasteners with EPDM washers. Avoid copper-based fasteners, which cause galvanic corrosion in contact with the aluminum-zinc coating.

Frequently Asked Questions (FAQS)

1. Can you supply AZ150 panels with different core materials?

Yes. We manufacture AZ150-faced panels with PIR foam, rockwool, or EPS cores. Specify your insulation, fire rating, and budget requirements and we will recommend the appropriate core type.

2. What is the service life of AZ150 panels in coastal environments?

In C4-C5 corrosivity environments (coastal, industrial), AZ150 with PVDF coating typically provides 20-25 year service life before significant coating degradation. This is roughly double the life of standard Z275 galvanized steel in the same environment.

3. Do you provide coating certificates and material test reports?

Yes. We supply mill test certificates for AZ150 coils including coating weight (AZ150 = 150 g/m2 total both sides), coating composition, and mechanical properties. PVDF coating warranty certificates are available on request.

4. What is the minimum order quantity and lead time?

MOQ is 500 sqm for AZ150 panels. Standard specifications typically ship in 15 days. Custom colors, special profiles, or mixed core types require 20-25 days.

5. Are AZ150 panels more expensive than standard galvanized panels?

AZ150 coil costs approximately 15-25% more than standard Z275 PPGI. However, the longer service life and lower maintenance cost in corrosive environments typically offset the initial premium within 5-8 years.

6. Can AZ150 panels be recycled at end of life?

Yes. The steel substrate is 100% recyclable. The aluminum-zinc coating does not interfere with steel recycling processes. Foam cores require separation, while rockwool cores are themselves recyclable.