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Durable Cast-Aluminum Outdoor Garden Bench combines functional design with industrial-grade durability to enhance outdoor living spaces, parks, commercial landscapes, campus grounds, and resort facilities. Unlike wooden or wrought-iron alternatives, these benches resist rotting, rusting, and warping, maintaining their structural integrity and aesthetic appeal through extreme weather conditions—from sub-zero winters with heavy snow to scorching summers with UV exposure. Our cast-aluminum benches are engineered for public and private use, supporting weights up to 300 kg per seat with a service life exceeding 20 years—making them a cost-effective investment that reduces long-term replacement costs by 60% compared to wooden benches .
The benches are crafted from A356 aluminum alloy, a premium casting material known for its exceptional strength-to-weight ratio, corrosion resistance, and castability. This alloy contains 7-8% silicon and 0.3-0.45% magnesium, forming a eutectic structure that minimizes shrinkage during solidification (less than 1% volumetric shrinkage) and ensures uniform density across complex shapes. After casting, all components undergo T6 heat treatment, which involves solution annealing at 540°C followed by artificial aging at 120°C, resulting in a tensile strength of 290 MPa and Brinell hardness of 85 HB—providing the rigidity to support heavy loads without deformation . The material is fully recyclable, with our production process using 30% recycled aluminum content, aligning with eco-friendly landscaping initiatives and LEED certification requirements.
A multi-layer surface protection system ensures longevity in harsh environments. The process includes:
• Zinc phosphate pretreatment to create a porous base for coating adhesion, enhancing coating durability by 40%
• Nylon-modified polyester powder coating (60-80μm thickness) that resists UV degradation (passing 2,000-hour QUV testing with ΔE <3 color change) and color fading
• 1000-hour salt spray test certification per ASTM B117, preventing rust and corrosion in coastal or high-humidity areas, where traditional iron benches typically fail within 5 years
The bench frame features reinforced ribbing at stress points (leg joints, seat supports) with a minimum wall thickness of 3mm, preventing flexing under load even after 100,000+ usage cycles. Drainage channels in seat panels (10mm width, 5mm depth) eliminate water pooling, while non-slip textured surfaces (Ra 6.3μm roughness) reduce accidents in wet conditions. Legs are designed with 45° angled braces for lateral stability, withstanding wind loads up to 80 km/h without tipping .
Cast-aluminum construction allows for intricate designs—from classic scrollwork (with 0.5mm detail resolution) to modern minimalist lines—without compromising strength. The powder coating process offers 12 standard RAL colors (including RAL 9016 Traffic White and RAL 8017 Brown) with custom color matching available (minimum 50 units) using Pantone or RGB specifications, ensuring compatibility with existing landscape designs and brand guidelines .
Our customization options transform standard benches into tailored outdoor solutions:
• Dimension flexibility: Seat lengths from 120cm to 240cm, with single or double backrest configurations (backrest height 80-100cm)
• Design personalization: Laser-cut logos (minimum 50mm size), custom patterns, or decorative elements (e.g., floral motifs) integrated into castings during the mold design phase
• Accessory integration: Built-in planter boxes (10L capacity), cup holders (70mm diameter), or armrests (wooden oak or aluminum) with ergonomic 25mm radius edges
• Production timeline: Prototypes in 3 weeks (using 3D sand casting), bulk orders (50+ units) delivered within 6-8 weeks with optional white-glove delivery
• Warranty: 10-year structural warranty (covering frame breakage) and 5-year finish warranty (against peeling or significant fading) with dedicated claims processing within 48 hours
Durable Cast-Aluminum Outdoor Garden Bench combines functional design with industrial-grade durability to enhance outdoor living spaces, parks, commercial landscapes, campus grounds, and resort facilities. Unlike wooden or wrought-iron alternatives, these benches resist rotting, rusting, and warping, maintaining their structural integrity and aesthetic appeal through extreme weather conditions—from sub-zero winters with heavy snow to scorching summers with UV exposure. Our cast-aluminum benches are engineered for public and private use, supporting weights up to 300 kg per seat with a service life exceeding 20 years—making them a cost-effective investment that reduces long-term replacement costs by 60% compared to wooden benches .
The benches are crafted from A356 aluminum alloy, a premium casting material known for its exceptional strength-to-weight ratio, corrosion resistance, and castability. This alloy contains 7-8% silicon and 0.3-0.45% magnesium, forming a eutectic structure that minimizes shrinkage during solidification (less than 1% volumetric shrinkage) and ensures uniform density across complex shapes. After casting, all components undergo T6 heat treatment, which involves solution annealing at 540°C followed by artificial aging at 120°C, resulting in a tensile strength of 290 MPa and Brinell hardness of 85 HB—providing the rigidity to support heavy loads without deformation . The material is fully recyclable, with our production process using 30% recycled aluminum content, aligning with eco-friendly landscaping initiatives and LEED certification requirements.
A multi-layer surface protection system ensures longevity in harsh environments. The process includes:
• Zinc phosphate pretreatment to create a porous base for coating adhesion, enhancing coating durability by 40%
• Nylon-modified polyester powder coating (60-80μm thickness) that resists UV degradation (passing 2,000-hour QUV testing with ΔE <3 color change) and color fading
• 1000-hour salt spray test certification per ASTM B117, preventing rust and corrosion in coastal or high-humidity areas, where traditional iron benches typically fail within 5 years
The bench frame features reinforced ribbing at stress points (leg joints, seat supports) with a minimum wall thickness of 3mm, preventing flexing under load even after 100,000+ usage cycles. Drainage channels in seat panels (10mm width, 5mm depth) eliminate water pooling, while non-slip textured surfaces (Ra 6.3μm roughness) reduce accidents in wet conditions. Legs are designed with 45° angled braces for lateral stability, withstanding wind loads up to 80 km/h without tipping .
Cast-aluminum construction allows for intricate designs—from classic scrollwork (with 0.5mm detail resolution) to modern minimalist lines—without compromising strength. The powder coating process offers 12 standard RAL colors (including RAL 9016 Traffic White and RAL 8017 Brown) with custom color matching available (minimum 50 units) using Pantone or RGB specifications, ensuring compatibility with existing landscape designs and brand guidelines .
Our customization options transform standard benches into tailored outdoor solutions:
• Dimension flexibility: Seat lengths from 120cm to 240cm, with single or double backrest configurations (backrest height 80-100cm)
• Design personalization: Laser-cut logos (minimum 50mm size), custom patterns, or decorative elements (e.g., floral motifs) integrated into castings during the mold design phase
• Accessory integration: Built-in planter boxes (10L capacity), cup holders (70mm diameter), or armrests (wooden oak or aluminum) with ergonomic 25mm radius edges
• Production timeline: Prototypes in 3 weeks (using 3D sand casting), bulk orders (50+ units) delivered within 6-8 weeks with optional white-glove delivery
• Warranty: 10-year structural warranty (covering frame breakage) and 5-year finish warranty (against peeling or significant fading) with dedicated claims processing within 48 hours
