4047 aluminum (Al-Si alloy with 11–13% silicon) is a widely used brazing and welding material, supplied in sheet, coil and strip forms. Known for its excellent fluidity, low thermal expansion and strong crack resistance, 4047 is the preferred alloy for automotive heat exchangers, condenser coils, electronic packaging and structural brazing assemblies.
As a trusted 4047 aluminum supplier, Chalco provides both stock sizes and customized solutions with full material traceability, fast delivery and compliance to international standards. As a global 4047 aluminum supplier (AA4047/AlSi12), Chalco supports both stock and custom projects.
*Highlights: Superior Brazing – Dimensional Stability – Corrosion Resistance – Global Supply*
Specification of Chalco 4047 aluminum coil strip
Temper: O, H12, H14, H16, H18, H22, H24, H26, F, H112
Thickness: 0.05 mm – 6.0 mm
Width: 5 mm – 2200 mm (sheet: 450–2200 mm; coil/strip: 5–2200 mm)
Coil inner diameter: 75 / 76 / 150 / 200 / 300 / 505 mm
Roll weight: 200–300 kg per roll (customized packaging on request)
Surface condition: Cold rolled smooth, descaled, optional protective film
Standards: ASTM B209, AMS 4185, AWS A5.8 (ER4047), EN AW-4047A / AlSi12(A), AA4047
*Custom sizes and surface finishes can be produced according to project needs.
4047 Aluminum Sheet, Coil & Strip Products
Chalco supplies 4047 aluminum sheet, coil and strip with high silicon content, low melting point and excellent brazing performance. These products are widely used in automotive heat exchangers, EV battery cooling plates, HVAC and electronic thermal systems.
Choose standard stock sizes or request custom specifications. All 4047 aluminum products are manufactured under strict quality control and supplied with full traceability.
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4047 Aluminum Sheet – Fixed Panels for Brazed PartsChalco 4047 aluminum sheet is supplied in flat panels with high surface quality and formability, ideal for airtight structural joints, cooling plates and heat exchanger housings.
Applications: EV battery cooling plates, brazed thermal panels, HVAC shells
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4047 Aluminum Coil – Continuous Rolls for Brazing
Chalco 4047 aluminum coil features consistent thickness and smooth surfaces, suitable for large-area brazing, cladding layers and roll-to-roll lamination.
Applications: heat exchanger substrates, cold plate laminations, slitting and tape making
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4047 Aluminum Strip – Precision Slit for Fins & ModulesChalco 4047 aluminum strip is slit with high precision to ensure neat edges and dimensional stability, widely used in condenser fins, cooling channels and electronic packaging modules.
Applications: automotive condenser fins, compact heat exchanger parts, electronic cooling systems
High-performance 4047 aluminum variants: ultra-thin, clad, and custom integration
In addition to standard sheet, coil and strip, Chalco also supplies 4047 aluminum variants for specialized brazing and thermal systems, including ultra-thin foil, custom slit strip, clad brazing sheet, and tube-forming clad strip. These products are designed for precision applications in automotive, HVAC, electronics and battery cooling.
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4047 Ultra-thin Foil
Thickness: 0.08–0.20 mm
Applications: electronic packaging, micro heat exchangers, precision connectors
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4047 Custom Slit Strip
Width: ≥5 mm (±0.1 mm accuracy)
Applications: condenser fins, electronic connectors, small cooling modules
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4047 Clad Brazing Sheet
Structure: 4047/3003, 4047/6061, multi-layer
Applications: heat exchanger plates, battery cooling parts, brazed fittings
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4047 Tube-forming Clad Strip
Thickness: 0.5–2.5 mm
Applications: condenser tubes, battery cooling pipes, HVAC small exchangers
*Also referred to as 4047 aluminium (AlSi12), these variants serve precision brazing applications.
Key Application Areas of 4047 Aluminum Brazing Materials
Chalco 4047 aluminum coils, clad strips, and foils are widely used in industries that demand reliable brazing, corrosion resistance, and stable thermal performance. From automotive heat exchangers to data center cooling, our solutions deliver proven results under diverse operating conditions.
Automotive Industry
4047 aluminum coil and clad brazing sheets are used in condensers, evaporators, and oil coolers. They ensure strong brazing joints, lightweight design, and long-term corrosion resistance for automotive thermal management systems.
Power Battery Cooling Systems
For EV battery cooling plates and hydrogen fuel cell modules, 4047 brazing strip ensures precise brazing, durability, and effective heat dissipation under demanding conditions.
Industrial Heat Exchange Equipment
Applied in air coolers, plate heat exchangers, and hydraulic oil coolers, 4047 clad coil delivers high strength, dimensional stability, and corrosion resistance.
Rail Transit and Ship Systems
4047 brazing coils and strips are widely used in high-speed rail and ship engine cooling systems, offering robust brazing quality and reliable operation under harsh environments.
Electronics and Communications
For 5G base stations, servers, and data centers, 4047 aluminum strip ensures efficient heat transfer with stable brazing and tight dimensional accuracy.
HVAC and Home Climate Systems
In commercial HVAC systems and home appliances like condensers and heat pumps, 4047 aluminum clad coil offers reliable brazing performance, corrosion resistance, and stable thermal efficiency.
Whether in automotive, energy, industrial, or electronics sectors, Chalco provides 4047 aluminum coil, clad strip, and foil solutions with proven performance and flexible customization to support your projects.
4047 Aluminum Coil & Strip Manufacturing Process and Quality Control
At Chalco, we integrate the entire production chain of 4047 aluminum sheet, coil, and strip — from alloy melting, hot & cold rolling, composite rolling, slitting, to surface finishing. This in-house control guarantees stable composition, precise dimensions, smooth surface quality, and reliable brazing performance. Beyond production, our large inventory and flexible customization enable both small trial batches and mass production with fast delivery.
We supply not only single-material 4047 coils but also a wide range of composite brazing products (single-, double-sided, or multi-layer). This one-stop capability helps customers reduce supply chain complexity, cut procurement costs, and accelerate project schedules.
| Chalco 4047 Aluminum Coil & Strip Production Capabilities | ||
| Key Process | Core Capability | Customer Benefit |
| Alloy Melting | High-purity feedstock; real-time spectrometer control | Consistent chemistry; fine grain structure |
| Hot & Cold Rolling | Multi-pass precision rolling; AGC thickness control | Excellent flatness; tight tolerance for brazing |
| Composite Rolling | Single/double-sided or heterogeneous coatings with 3003/6063/6951 cores | Flexible clad solutions for diverse brazing needs |
| Slitting & Surface Treatment | High-speed precision slitting (5–1600 mm); optional film coating | Custom widths; clean surface; smooth edges |
| Quality Control & Traceability | Ultrasonic & peel tests; ASTM/EN/ISO compliance | Reliable bonding; full batch traceability |
Why choose Chalco for 4047 aluminum coils & strips:
- Real-time spectrometer analysis ensures chemical consistency and brazing reliability.
- Automatic AGC rolling system delivers precise thickness and flatness.
- Ultrasonic and peel tests confirm strong, delamination-free bonding.
- Certified to ISO 9001, ASTM B209/B928, EN 485/1396, and customer-specific standards.
- Flexible supply: inventory stock + custom sizes, supporting both sampling and large orders.
- Each coil marked with unique batch ID for full quality traceability.
Looking for certified 4047 aluminum coil & strip with stable quality? Contact Chalco today to get samples and technical support.
4047 Aluminum Sheet, Coil & Strip Technical Parameters
| Technical Parameters and Quality Indicators of 4047 Aluminum Coil & Strip | |
| Composite structure | 4047/3003/4047 three-layer or 4047/6063, 4047/6951 heterogeneous composites |
| Coating thickness | 0.03–0.15 mm (customizable) |
| Coating type | Single-side, double-side, or multi-layer |
| Surface protection | Optional anti-oxidation film |
| Peel strength | ≥10 N/mm, no delamination |
| Testing | Ultrasonic NDT, salt spray >96h |
| Standards | ASTM B209/B928, EN 573/485/1396, GB/T 3190 |
| Chemical composition of 4047 alloy | |
| Element | Range |
| Si | 11.0–13.0% |
| Fe | ≤0.80% |
| Cu | ≤0.30% |
| Zn | ≤0.20% |
| Al | Balance |
| Mechanical properties (typical H18 temper) | |
| Tensile strength | 170–200 MPa |
| Yield strength | 80–120 MPa |
| Elongation | 1–5% |
| Hardness | 60–75 HB |
| Welding & brazing performance | |
| Melting range | 577–605°C |
| Brazing fluidity | Excellent |
| Hot crack resistance | Excellent (better than 4045) |
| Typical processes | Vacuum brazing, molten salt brazing, inert gas brazing |
Chalco provides detailed technical datasheets for 4047 aluminum sheet, coil, and strip. Request now to get engineering support.
Chalco 4047 Aluminum Sheet Coil Strip Stock Sizes
Chalco offers a wide selection of 4047 aluminum coils and strips to support automotive, battery, industrial, and electronic cooling projects. With precise composition control, excellent brazing performance, and stable quality, our 4047 aluminum stock (sheet, coil & strip) supports urgent production needs and spot purchases.
| 4047 aluminum coil dimensions | ||
| Size (Thickness × Width × Length) | Specification | Remarks |
| 0.003" × 4" × 24" | ASTM B209 | Standard coil stock |
| 0.005" × 6" × 24" | ASTM B209 | Thin sheet coil |
| 0.008" × 6" × 12" | ASTM B209 | Lightweight applications |
| 0.010" × 6" × 24" | ASTM B209 | General brazing use |
| 0.010" × 6" × 36" | ASTM B209 | Extended size option |
| 0.010" × 12" × 36" | ASTM B209 | Wide-format coil |
| 0.012" × 6" × 36" | ASTM B209 | Structural applications |
| 0.015" × 6" × 24" | ASTM B209 | Mid-thickness usage |
| 0.015" × 12" × 36" | ASTM B209 | General-purpose sheet |
| 0.020" × 12" × 72" | ASTM B209 | Large format coil |
| 0.025" × 3" × 24" | ASTM B209 | Narrow width option |
| 0.030" × 12" × 72" | ASTM B209 | Heavy-duty applications |
| 0.040" × 12" × 72" | ASTM B209 | Structural components |
| 0.045" × 6" × 36" | ASTM B209 | Medium-thickness usage |
| 0.050" × 12" × 72" | ASTM B209 | Common in heavy brazing |
| 0.060" × 12" × 72" | ASTM B209 | Industrial usage |
| 0.080" × 12" × 72" | ASTM B209 | Reinforced applications |
| 0.090" × 12" × 36" | ASTM B209 | High strength requirement |
| 0.125" × 12" × 72" | ASTM B209 | Heavy structure fabrication |
| 0.160" × 4.5" × 6" | ASTM B209 | Small part manufacturing |
| 0.190" × 24" × 12" | ASTM B209 | Specialty component use |
| 0.190" × 24" × 72" | ASTM B209 | Heavy plate size |
| 0.250" × 8" × 12" | ASTM B209 | Medium-thick plates |
| 0.500" × 6" × 12" | ASTM B209 | Thick plate stock |
| 0.500" × 12" × 36" | ASTM B209 | Heavy duty applications |
| 0.750" × 12" × 32" | ASTM B209 | Maximum thickness range |
| 4047 aluminum strip dimensions | ||
| Size (Thickness × Width × Length) | Specification | Remarks |
| 0.003" × 4" × 24" | ASTM B209 | Precision strip stock |
| 0.005" × 6" × 24" | ASTM B209 | Thin strip for forming |
| 0.008" × 6" × 12" | ASTM B209 | Lightweight strip |
| 0.010" × 6" × 24" | ASTM B209 | Strip for brazing |
| 0.010" × 6" × 36" | ASTM B209 | Extended strip format |
| 0.010" × 12" × 36" | ASTM B209 | Wide strip for fabrication |
| 0.012" × 6" × 36" | ASTM B209 | Medium gauge strip |
| 0.015" × 6" × 24" | ASTM B209 | General-purpose usage |
| 0.015" × 12" × 36" | ASTM B209 | Wide strip |
| 0.020" × 12" × 72" | ASTM B209 | Large dimension strip |
| 0.025" × 3" × 24" | ASTM B209 | Narrow cut strip |
| 0.030" × 12" × 72" | ASTM B209 | Industrial usage strip |
| 0.040" × 12" × 72" | ASTM B209 | Heavy structure usage |
| 0.045" × 6" × 36" | ASTM B209 | Mid-range thickness strip |
| 0.050" × 12" × 72" | ASTM B209 | Heavy duty strip stock |
| 0.060" × 12" × 72" | ASTM B209 | High load applications |
| 0.080" × 12" × 72" | ASTM B209 | Structural strip |
| 0.090" × 12" × 36" | ASTM B209 | Compact heavy strip |
| 0.125" × 12" × 72" | ASTM B209 | Thick strip option |
| 0.160" × 4.5" × 6" | ASTM B209 | Small size strip use |
| 0.190" × 24" × 12" | ASTM B209 | Specialty heavy strip |
| 0.190" × 24" × 72" | ASTM B209 | Large heavy strip format |
| 0.250" × 8" × 12" | ASTM B209 | Medium-thick strip |
| 0.500" × 6" × 12" | ASTM B209 | Maximum thickness strip |
| 0.500" × 12" × 36" | ASTM B209 | Heavy industrial usage |
| 0.750" × 12" × 32" | ASTM B209 | Extra heavy strip |
4047 Alloy Comparison and Related Product Recommendations
| Alloy | Feature Comparison | Recommended Application Scenarios |
| 4045 | Slightly weaker fluidity than 4047, slightly better corrosion resistance | Air conditioning heat exchanger, standard heat exchange plate |
| 4047 | Low melting point, excellent fluidity, good thermal crack resistance | Power battery liquid cooling plate, high airtight brazing structure |
| 4343 | Slightly higher melting point, good fluidity, excellent joint toughness | Industrial heat exchanger, special atmosphere brazing |
| 7072 | Very high corrosion resistance, used as a protective layer rather than brazing main material | Used as corrosion-resistant surface layer of composite materials |
Related Brazing Materials & Recommended Alloys
Widely used as a brazing and welding filler alloy, with stable flow and good bonding performance.
High-strength core alloy, commonly clad with 4047 for automotive and electronic heat exchangers.
Popular core alloy in brazed panels and cooling plates, balancing strength and corrosion resistance.
General brazing and welding filler rods, suitable for multiple aluminum alloys and applications.
High-performance welding wire with strong corrosion resistance and excellent brazing flow.
Stronger than 4043 while maintaining good weldability, widely used in structural brazing.
FAQs for 4047 Aluminum Coil & Strip
What thicknesses are available?
0.08 mm – 3.0 mm in coils or strips, with slitting and cut-to-length options.
What surface treatments can be provided?
Cold-rolled smooth, descaling, protective film, or customized flux coating.
Can you provide certificates?
Yes, including composition analysis, mechanical properties, ultrasonic, or peel strength reports.
Do you support small-batch or samples?
Yes, quick samples are available to shorten R&D cycles.
Which brazing processes are suitable?
Vacuum brazing, molten salt, and inert gas brazing (e.g., argon shielded).
Do you provide application support?
Yes, from alloy selection to process optimization and custom composite solutions.
As a leading 4047 aluminum supplier, Chalco delivers coil, sheet, and strip with full certification, competitive pricing, and global shipping support.
Chalco can provide you the most comprehensive inventory of aluminum products and can also supply you customized products. Precise quotation will be provided within 24 hours.
Get a quote