1050 Lingkaran Aluminium untuk Peralatan Masak: Comprehensive Technical Specification & Product Manual

1. Executive Product Overview

1.1 Pengantar 1050 Cookware-Specific Aluminum Circles

Itu 1050 Cookware-Specific Aluminum Circle represents the pinnacle of high-purity forged aluminum disc substrates available in the global cookware manufacturing industry.

Engineered for versatility, this product adheres strictly to the American Aluminum Association (A A) standards and China’s national standard GB/T 3190-2020. With a guaranteed minimum aluminum purity of 99.5%, this product sits at the apex of the industrial pure aluminum series.

Unlike generic aluminum discs, this variant is the result of years of metallurgical refinement aimed specifically at solving the unique challenges faced by cookware OEMs and ODMs worldwide.

1.2 Metallurgical Genesis and Process Flow

Our production cycle integrates a closed-loop quality control system spanning from molten metal to finished coil. The process initiates with the smelting of virgin aluminum ingots, followed by homogenization, bergulir panas, bergulir dingin, dan akhirnya, our proprietary Precision Gradient Annealing.

The circles are then blanked, leveled, and inspected. Each stage is monitored via Spectrometer analysis and ultrasonic scanning to ensure zero inclusions or pinholes. This meticulous process ensures the material is not merely a piece of metal, but a high-performance substrate ready for the most demanding forming operations.

1.3 Addressing Industry Pain Points

The primary historical challenge with standard aluminum circles in cookware production has been unpredictable failure during forming.

Issues such as edge cracking during deep drawing, orange peel texture during spinning, and inconsistent wall thickness have plagued manufacturers, leading to high scrap rates. Kita 1050 Cookware-Specific formulation directly targets these issues.

By optimizing the grain structure and eliminating intermetallic compounds through advanced fluxing and degassing techniques, we have developed a material that offers unparalleled plasticity.

This document will focus heavily on how our superior Tingkat Pemanjangan​ translates directly into higher profitability and product quality for your operations.

2. Menyelam Lebih Dalam: Core Alloy & Temper Parameters

2.1 Chemical Composition and Metallurgical Purity

The chemical fingerprint of our 1050 alloy is the bedrock of its performance. We maintain a stringent protocol where total impurities are capped at ≤0.5%.

• Besi (Fe) ≤ 0.40%:​ Controlled to optimize the formation of Al-Fe-Si phases which contribute to strength without sacrificing ductility.
• Silikon (Dan) ≤ 0.25%:​ Kept low to ensure high plasticity and prevent the formation of hard silicon particles that can initiate cracks.
• Tembaga (Cu) ≤ 0.05%:​ Minimized to enhance corrosion resistance, particularly important for cookware exposed to acidic foods.
• Elemen Jejak:​ Lead (hal), Arsenik (Sebagai), and Cadmium (CD) are virtually eliminated to ensure 100% food-grade safety compliance.

Lanskap Kompetitif: 1050 vs. 1060 vs. 1100

To illustrate why 1050 adalah “Tempat yang Manis” for cookware manufacturing, consider the following expanded technical comparison:

2.2 Specialized Temper Designations for Cookware

We do not offer just “bahan”; we offer “process-ready” solutions through specific tempers:

• KE (Anil Sepenuhnya – Lembut):​ Achieved by heating above the recrystallization temperature and cooling slowly. This results in a ductility peak. Aplikasi:​ Essential for pots requiring a depth-to-diameter ratio greater than 1:1, such as stockpots, wajan, and high-sided saucepans.
• H14 / H24 (Setengah Keras):​ H14 is strain-hardened; H24 is strain-hardened and partially annealed. They offer a balance. Aplikasi:​ Perfect for fry pans and sauté pans where the base requires rigidity to avoid oil pooling (“oil canning”) but the sides require slight curvature.
• H18 (Full-Hard):​ Cold-worked to the hardest possible state for this alloy. Aplikasi:​ Lids, base plates for induction cookware, and pizza trays where zero deformation is required.

3. Critical Performance Analysis: Focus on Elongation

3.1 Understanding Elongation (A50 Standard)

Elongation is the percentage increase in the gauge length of a test specimen before it breaks under tension. In cookware terms, it measures how far the metal can stretch before fracturing. We utilize the A50 standard​ (50mm gauge length) because it provides the most accurate simulation of real-world stretching in a press.

Detailed Mechanical Properties Table

• Why these numbers matter:​ The high elongation of our HO temper (28-32%) provides a massive “safety margin.” If a drawing operation requires 20% stretch, standar 1100 might fail, but our 1050 performs flawlessly. Yang tinggi nilai-r​ indicates excellent deep drawability (resistance to thinning), sementara itu nilai-n​ ensures uniform deformation rather than localized necking.

3.2 Physical Properties and Thermal Dynamics

• Konduktivitas Termal (230 W/m·K):​ Aluminum dissipates heat 3x faster than stainless steel. Kita 1050 circles ensure there are no “titik panas” which cause food to burn. During the spin-forming process, this property also helps dissipate frictional heat, preventing die sticking.
• Kepadatan (2.70 gram/cm³):​ This low density allows for thicker gauge walls (for durability) without increasing the final product weight, improving the end-user experience.
• Modulus Elastisitas:Kira-kira 69 IPK. This ensures that while the material is ductile, it retains enough spring-back control for accurate dimensional stability after forming.

4. Spesifikasi, Tolerances, and Dimensional Integrity

4.1 Comprehensive Size Range

We offer the widest range of diameters and thicknesses to suit every niche of the kitchenware market:

• Thickness Window:​ 0.3mm to 10.0mm.
  • Sub-0.5mm:Used for disposable foil containers or ultra-light camping cookware.
  • 0.5mm – 3.0mm:The sweet spot for consumer cookware.
  • 3.0mm – 10.0mm:Heavy-duty commercial braising pans and induction bases.
• Diameter Window:​ 20mm to 1600mm.
  • Kecil (<200mm):Components for appliances, tutup, and butter warmers.
  • Besar (>1200mm):Commercial paella pans and industrial mixing bowls.

4.2 Precision Tolerance Standards

Our tolerance standards are twice as strict as typical commodity aluminum:

• Toleransi Ketebalan:​ Held to ±0,02mm​ for thin gauges. Mengapa? Because a 0.05mm deviation in thickness can cause a 10% variation in stretching force, leading to inconsistent forming heights and premature tool wear.
• Kualitas Tepi:​ Cut edges are deburred and rounded (Radius > 0.1mm) to prevent stress risers. A sharp edge acts as a pre-existing crack, drastically reducing the effective elongation during drawing.

5. Advanced Manufacturing Processes

5.1 DC Casting vs. CC Continuous Casting

We operate both Direct Chill (DC) and Continuous Casting (CC) lines to serve different market segments:

• Pengecoran DC (Dinginkan Langsung):​ Molten aluminum is poured into a water-cooled mold. This creates a thick slab with a highly directional solidification structure. It is excellent for thick-gauge products requiring high structural integrity.
• CC Casting (Pengecoran Berkelanjutan & Bergulir):​ Molten aluminum is fed through a twin-roll caster, creating a thin strip directly. This results in a much finer, more isotropic grain structure. Keuntungan:​ Superior surface finish (no “lubang kecil”) and approximately 30% better elongation consistency compared to DC cast material. Recommended for high-end non-stick cookware where surface perfection is mandatory.

5.2 The Science of Precision Annealing

Annealing is where the magic happens. Kita Gradient Annealing Furnaces​ utilize a 5-zone temperature profile.

1. Recovery:​ Heating to remove internal stresses from rolling.
2. Rekristalisasi:​ Heating to ~350°C to form new, strain-free grains.
3. Grain Growth Control:​ Precisely holding temperature to achieve the “Goldilocks” grain size (~30-40 microns). Too small = stiff; too large = “orange peel.”
4. Pendinginan Terkendali:​ Slow cooling to prevent re-introduction of thermal stress.

   This scientific approach ensures that every circle leaving our facility possesses the exact elongation required for the job.

6. Surface Technology and Finishing Compatibility

6.1 Native Surface Characteristics

The as-rolled surface is protected by a thin, invisible oxide layer that prevents staining during transit. It is chemically clean, free of rolling oils, and ready for immediate processing. There are no “tanda rol” (ghosting) which can telegraph through to the final polished cookware surface.

6.2 Pre-Treatment and Conversion Coatings

Kita 1050 alloy is the ideal substrate for value-added processes:

• Anodisasi:​ The high purity ensures a thick, seragam, and clear anodic layer. We recommend our CC-cast material for hard anodizing to prevent pitting.
• Lapisan Anti Lengket (PTFE/Ceramic):​ The surface can be etched (chemically or mechanically) to create a micro-anchoring profile. Our material’s low impurity content ensures zero “popping” or outgassing during the high-temperature curing of non-stick coatings.
• Pemolesan:​ Due to the absence of hard intermetallic particles, our circles polish to a mirror finish faster and with less abrasive consumption than lower-purity alloys.

7. Strategic Product Advantages

1. Yield Optimization:​ Our consistent elongation (28-32%) reduces your scrap rate from an industry average of 5% down to <1%. On a production run of 100,000 units, this saves 4,000 circles worth of material and labor.
2. Tooling Longevity:​ Consistent material properties reduce shock loading on presses and spinning machines, extending tool life by up to 20%.
3. Regulatory Peace of Mind:​ Full compliance with FDA 21 CFR, Peraturan UE 1935/2004, and LFGB standards. Our material is certified for direct food contact, containing no heavy metals (hal, CD, Sebagai).
4. Logistical Efficiency:​ We offer JIT (Just-in-Time) delivery programs. Our circles are interleaved with neutral craft paper or PE film to prevent scratching during automated feeding.

8. Expanded Application Portfolio

• Consumer Hardlines:​ High-end forged fry pans, clad stainless steel cookware cores, Dutch ovens.
• Small Appliances:​ Air fryer baskets, panci bagian dalam penanak nasi, badan ketel listrik, coffee machine boilers.
• Commercial/HORECA:​ Hotel pans (Steam table pans), buffet chafing dishes, heavy-duty stockpots, cetakan kue.
• Specialty Items:​ Reflectors for lighting (utilizing the high reflectivity of pure aluminum), heat sinks for electronics.

9. Quality Assurance Infrastructure

9.1 Laboratory Capabilities

Our in-house lab is equipped with:

• Instron Universal Testing Machine:​ For precise tensile testing (Pemanjangan, UTS, YS).
• Mikroskop Metalografi:​ For grain size analysis (ASTM E112).
• Spectrometers:​ For instant chemical composition verification.
• Coating Adhesion Testers:​ To simulate non-stick application performance.

9.2 Certification Portfolio

• ISO 9001:2015:​ Quality Management System.
• ISO 14001:2015:​ Environmental Management System.
• FDA (Amerika Serikat), DJCCRF (Perancis), LFGB (Jerman):​ Food Contact Compliance.
• MENCAPAI & RoHS:​ Restriction of Hazardous Substances.

10. Logistik, Kemasan, and Support

10.1 Export-Standard Packaging

• Eye-to-Sky or Eye-to-Wall:​ Orientation based on customer preference.
• Moisture Barrier:​ Each bundle is wrapped in LDPE sheeting and sealed with desiccant packs to prevent oxidation during sea freight.
• Wooden Crates:​ Heat-treated (ISPM-15 compliant) wooden crates for maximum protection against forklift damage.

10.2 Technical Partnership

We don’t just sell aluminum; we provide engineering support. Our technical team can assist with:

• Blank Diameter Calculation:​ Helping you determine the exact circle size needed for your specific pot shape to minimize trim scrap.
• Draw Reduction Ratios:​ Advising on the number of drawing stages required for deep pots to maximize success with our material.
• Sample Provision:​ Free samples (up to 5kg) are available for press trials and laboratory verification.