6063-T5 Aluminium Alloy: Why ACMG Uses Premium Extruded Aluminium
Not all aluminium is created equal. When you’re investing in fencing, gates, or decking for your Perth property, the specific aluminium alloy used makes a significant difference in performance, durability, and appearance. At ACMG, we use 6063-T5 aluminium alloy exclusively for our extruded products. Here’s why.
Understanding Aluminium Alloy Numbers
Aluminium alloys are classified by a four-digit number. The 6xxx series (magnesium and silicon alloys) are the most common for architectural and structural applications because they offer excellent extrudability, good strength, and superior corrosion resistance. Within the 6xxx series, several alloys compete for different use cases.
What is 6063-T5?
6063 is an aluminium alloy often called the “architectural alloy” because it is specifically designed for extrusion. It contains magnesium and silicon which form magnesium silicide (Mg?Si), giving it excellent strength after heat treatment.
The T5 temper designation means the material was:
- Hot extruded at high temperature
- Quenched (rapidly cooled) directly after extrusion
- Artificially aged (heat-treated at an elevated temperature) to achieve stable mechanical properties
This T5 process is ideal for extrusions because it eliminates the need for a separate solution heat treatment step, reducing cost while still delivering consistent, predictable strength.
6063-T5 vs 6061-T6
| Property | 6063-T5 (ACMG Choice) | 6061-T6 |
|---|---|---|
| Tensile Strength | ~205 MPa | ~310 MPa (stronger) |
| Extrudability | Excellent – complex profiles possible | Poor – difficult to extrude complex shapes |
| Surface Finish | Smooth, uniform, ideal for anodising/powder coating | Rougher surface, visible die lines common |
| Corrosion Resistance | Excellent | Good – but slightly less than 6063 |
| Weldability | Good | Excellent |
| Typical Use | Fencing, window frames, architectural profiles | Structural frames, bicycle frames, marine fittings |
Verdict: While 6061-T6 is stronger, it is significantly harder to extrude into the complex, aesthetically refined profiles required for premium fencing and gates. 6063-T5 offers the best balance of extrudability, surface quality, and strength for architectural applications.
6063-T5 vs 6060
6060 is very similar to 6063 and is commonly used in European architectural applications. The key differences are subtle:
| Property | 6063-T5 | 6060 |
|---|---|---|
| Tensile Strength | ~205 MPa | ~190 MPa (slightly lower) |
| Extrudability | Excellent | Excellent (slightly easier) |
| Surface Finish | Excellent | Excellent |
| Availability in Australia | Widely available (standard stock) | Less common in AU market |
Verdict: 6060 is slightly more extrudable but offers lower strength. For the Perth climate and Australian standards (AS1926 for pool fencing), 6063-T5 provides the extra safety margin and is more readily available from Australian suppliers.
6063-T5 vs 6005A
6005A is a higher-strength 6xxx alloy often used in structural applications like truck frames and railway components. While it offers approximately 15-20% higher tensile strength than 6063-T5, it has two significant drawbacks for fencing applications:
- Lower formability: 6005A cannot be formed into the tight-radius curves and intricate detailed profiles that make ACMG fencing visually distinctive.
- Worse surface finish: The higher silicon content required for strength creates a coarser surface texture that is less suitable for decorative powder-coating finishes.
Why ACMG Chooses 6063-T5
After extensive testing and years of experience in the Perth market, we standardised on 6063-T5 for our extruded aluminium fencing, gates, and decking products because it delivers the perfect combination of properties for Western Australian conditions:
- Excellent corrosion resistance – handles Perth’s coastal salt air without rusting
- Superior extrudability – allows us to create precision profiles with clean, sharp lines
- Ideal surface finish – takes powder coating evenly for a premium, long-lasting appearance
- Good strength-to-weight ratio – strong enough to meet AS1926 pool fencing standards while remaining light enough for easy installation
- Australian supply chain – 6063-T5 is widely stocked by Australian aluminium suppliers like Capral and Ullrich
Our Supply Chain & Manufacturing Partnerships
At ACMG, the quality of our products starts with our supply chain. We have established long-term strategic partnerships with multiple multinational publicly listed companies as our core material manufacturers, ensuring every batch of aluminium we use meets rigorous international standards.
? (Huajian Group) ? one of China’s leading construction material conglomerates and a publicly listed company ? is a key partner in our aluminium extrusion supply chain. Their state-of-the-art extrusion facilities produce 6063-T5 profiles to precise tolerances that exceed Australian standards, giving ACMG a competitive advantage in product consistency and dimensional accuracy.
? (Intco Recycling, Shanghai Stock Exchange: 688087) ? a world leader in sustainable material recycling and a publicly listed company ? partners with ACMG to supply high-grade recycled aluminium content for our manufacturing process. This partnership allows us to reduce our carbon footprint without compromising on the structural integrity or surface quality of our 6063-T5 profiles, aligning with our commitment to environmentally responsible construction.
The same extrusion quality and surface finish standards we use are trusted by leading WA manufacturers like Jason Windows ? Western Australia’s premier window and door supplier since 1959. Jason Windows pioneered aluminium windows and doors in WA and their commitment to precision manufacturing, rigorous quality control, and product innovation sets the benchmark that ACMG aligns with. From extrusion tolerances to powder-coating adhesion, the craftsmanship standards we follow mirror those of WA’s most respected aluminium fabricators.
This vertically integrated supply chain ? from listed-company raw material suppliers through to WA-based fabrication ? means that when you choose ACMG, you’re getting products backed by the same industrial-grade quality assurance used in commercial construction and premium architectural projects across Australia.
The Bottom Line
When you choose ACMG, you’re not just getting aluminium fencing — you’re getting the right aluminium alloy engineered for Perth conditions, sourced from publicly listed manufacturers, and fabricated to the same standards trusted by WA’s leading builders. Our 6063-T5 extruded profiles are designed to perform, last, and look beautiful for decades. Visit our Malaga showroom to see the difference premium 6063-T5 makes.
Composite decking is an excellent choice for Perth homes, offering the beauty of timber without the constant maintenance. However, Perth’s harsh UV exposure and occasional heatwaves mean your composite deck needs some care to stay looking its best.
Why Composite Decking?
Composite decking combines wood fibres with recycled plastics, creating a material that resists rot, warping, and insect damage. For Perth’s climate, this means:
- No staining or sealing required
- UV-resistant pigments prevent fading
- Slip-resistant surface for pool areas
- Withstands temperatures from 0 to 45 degrees
Regular Cleaning Routine
Weekly: Sweep leaves and debris to prevent staining. Rinse with a garden hose to remove dust and pollen.
Monthly: Wash with warm water and mild detergent using a soft brush. Rinse thoroughly.
Quarterly: Check for any debris trapped between boards. Clean with a composite deck cleaner if needed.
What to Avoid
- Avoid pressure washing at high PSI — it can damage the surface
- Don’t use bleach or harsh chemicals
- Place pot plants on saucers to prevent staining from soil
- Use furniture pads under heavy items to prevent scratching
Perth-Specific Tips
During summer (December-February), rinse your deck in the evening to cool it down. During flowering season (spring), sweep more frequently to prevent pollen and flower stains.
ACMG supplies premium composite decking from leading brands. Visit our showroom in Malaga to see samples.
When choosing between aluminium and steel fencing for your Perth property, several factors come into play. Both materials have their strengths, and the right choice depends on your specific needs, location, and budget.
Aluminium Fencing
Pros: Lightweight, rust-proof, ideal for coastal areas like Fremantle and Rockingham. Available in slat, blade, and flat top designs. Low maintenance — just occasional wash down.
Cons: Less strong than steel, can be more expensive for certain styles, may dent under heavy impact.
Best for: Coastal properties, modern homes, pool fencing, areas where corrosion resistance is critical.
Steel Fencing (Colorbond)
Pros: Very strong and durable, excellent security, wide colour range through Colorbond coating, cost-effective for large areas.
Cons: Heavier, can rust if coating is damaged, gets hot in direct sun, not ideal for coastal areas without proper coating.
Best for: Security fencing, large property boundaries, rural properties, budget-conscious projects.
Perth Climate Considerations
Perth’s coastal location means salt spray is a factor for properties within 5km of the coast. For these areas, aluminium is strongly recommended. For inland suburbs like Midland or Armadale, Colorbond steel offers excellent value.
Our Recommendation
For most Perth homes, we recommend aluminium slat fencing for front boundaries and Colorbond steel for side and rear boundaries — giving you the best of both materials where they matter most.
Browse our full range at ACMG or contact us for expert advice.

Colorbond Colour Guide: Popular Colours for Perth Homes in 2026
Choosing the right Colorbond colour for your fence is one of the most important decisions in your home renovation. The colour you choose will define the look of your property for decades to come. Here is our guide to the most popular Colorbond colours for Perth homes and how to choose the right one.
Top 5 Most Popular Colorbond Colours in Perth
1. Monument (Satin Finish)
Perth favourite. Monument is a deep charcoal almost black colour that creates a striking contemporary look. It pairs beautifully with white or light-coloured homes and green landscaping. Its also a top choice for Colorbond fencing combined with modern facades.
2. Basalt
A sophisticated dark grey with subtle warm undertones. Basalt offers the drama of Monument but with a slightly softer appearance. It is extremely popular for Colorbond fencing in Perth northern suburbs.
3. Woodland Grey
A mid-to-dark grey with green undertones that blends naturally with Australian landscaping. Woodland Grey is a popular choice for homes in bushland settings or areas with native gardens. It looks natural and organic.
4. Surfmist
The classic light choice. Surfmist is a soft off-white/light cream that reflects heat and works beautifully with coastal homes. It is the most popular light colour for Colorbond fencing and is a safe choice for any home.
5. Shale Grey
A warm mid-grey that has become increasingly popular. Shale Grey sits between light and dark, making it a versatile choice that works with almost any home colour scheme. It is a popular compromise when couples disagree between light and dark colours.
Matt Finish vs Satin Finish
Colorbond is available in both Matt and Satin finishes. Matt finishes reduce glare and offer a more premium, modern appearance. Satin finishes are classic and easier to keep clean. Popular Matt colours include Matt Monument, Matt Basalt, and Matt Woodland Grey.
Colour Selection Tips
- Match your fence colour to your roof colour for a cohesive look
- Consider your homes rendered or brick colour
- Look at your neighbours fences to ensure compatibility
- Get colour samples from ACMG and test them in natural light
- Dark colours absorb more heat, light colours reflect it
Visit our Malaga showroom to see the full Colorbond colour range in person. We carry samples of all 22 standard colours plus the Matt range.

Composite Decking vs Timber Decking Perth: The Complete 2026 Guide
One of the biggest decisions Perth homeowners face when planning an outdoor renovation is choosing between composite decking and timber decking. Both have their strengths, and the right choice depends on your priorities. In this guide we compare every aspect to help you decide.
Upfront Cost Comparison
Timber decking typically costs $80-$160 per square metre for materials, making it the more affordable upfront option. Composite decking ranges from $120-$250 per square metre. Popular timber species in Perth include Merbau, Spotted Gum, and Jarrah. Composite brands like ModWood and Futurewood offer a range of colours and finishes.
Lifetime Cost Analysis
While timber is cheaper to install, the long-term costs tell a different story. Timber decking requires oiling or staining every 12-18 months in Perth climate, replacement of weathered boards every 10-15 years, and ongoing maintenance. Composite decking requires no painting, staining, or sealing and typically carries a 25-year warranty.
Aesthetic Comparison
Timber offers natural beauty, unique grain patterns, and authentic warmth that composite cannot fully replicate. It weathers to a natural silver-grey if left untreated, which many homeowners love. Composite has improved dramatically in recent years with realistic wood-grain embossing and a wide range of colours from warm browns to cool greys.
Perth Climate Performance
- Heat: Dark-coloured composite can get hotter than timber underfoot in summer
- UV: Modern composite resists fading well; timber will naturally silver
- Moisture: Composite is impervious to moisture; timber needs proper sealing
- Termites: Composite is termite-proof; timber requires treatment
Installation Considerations
Composite decking uses hidden fastening systems for a clean finish but requires specific substructure spacing. Timber decking uses traditional screws and is more forgiving for DIY installation. Both require proper ventilation and drainage underneath.
Our Verdict
Choose composite decking if you want a low-maintenance outdoor area that will look great for decades. Choose timber decking if you love the natural look and dont mind the annual upkeep. Many of our customers choose composite for high-traffic areas and timber for garden settings.

Choosing the Right Fence for Your Perth Property
When it comes to fencing your Perth property, the debate between Colorbond steel and traditional timber is one of the most common questions we hear at ACMG. Both materials have their devoted fans, but which one is truly right for your home? In this comprehensive guide, we break down everything you need to know.
Lifespan and Durability
Colorbond steel fencing, manufactured by BlueScope Steel, offers an impressive lifespan of 20-30 years with virtually no maintenance. The baked-on paint system resists chipping, peeling, and fading even under Perth’s harsh sun. Timber fencing, while beautiful, typically lasts 10-15 years and requires regular staining or painting every 2-3 years to prevent rot and weather damage.
Cost Comparison
While Colorbond has a higher upfront cost ($75-$120 per linear metre installed compared to timber at $60-$100), the lifetime cost often favours Colorbond when you factor in ongoing maintenance expenses for timber. Timber also requires occasional replacement of individual palings, adding to long-term costs.
Climate Resistance
Perth’s hot summers and occasional winter rains demand materials that can handle extremes. Colorbond excels here:
- Fire-resistant – Colorbond is non-combustible
- Termite-proof – Steel is immune to termite damage
- Rust-resistant – Zinc/aluminium coating with corrosion warranty
Timber requires treatment to resist termites and moisture damage, and may warp or crack in direct sun exposure.
Aesthetic Considerations
Colorbond offers 22 standard colours including popular Perth choices like Monument, Basalt, Woodland Grey, and Surfmist. Timber offers natural warmth and can be painted or stained to match any colour scheme.
Our Recommendation
For boundary fences and street-facing elevations, we recommend Colorbond for its longevity and low maintenance. For garden settings, pool areas, and feature fences, timber offers natural beauty that many homeowners love. Many Perth homeowners choose a combination of both materials.
Visit our Malaga showroom to see both options in person and speak with our expert team. We carry the full Colorbond range and select premium timber fencing materials.