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| Customization: | Available |
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| Type: | Seamless |
| Technique: | Cold Rolled |
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4343/3003 Clad Aluminum Coil 0.8x1250mm | Zero Sagging at 600°C Brazing for Heavy Equipment Radiators
Engineered Thermal Solution for High-Temperature Core Assembly
Designed for heavy-duty radiator manufacturing, our 4343/3003 clad aluminum coils deliver unmatched brazeability and structural integrity under extreme thermal cycling. With precision-controlled cladding ratio and H24 temper strength, this composite material eliminates core sagging during 600°C brazing processes - outperforming monolithic alloys and composite designs in durability and production yield.
Key Performance Advantages
High-Temperature Stability
Zero Sagging: Maintains flatness within 0.3mm/m at 600°C (per ASTM E831)
Controlled Si Diffusion: 4343 cladding layer prevents intergranular penetration
Brazing Window: 590-615°C optimal processing range
Manufacturing Efficiency
| Property | Value | Benefit |
|---|---|---|
| Cladding Ratio | 10% ±1% (4343 side) | Consistent filler metal distribution |
| Post-Braze Strength | 110 MPa min YS | Withstands 3 bar pressure cycling |
| Formability | 15% elongation | Deep fin forming (R/t=0.5) |
Corrosion Performance
Post-braze salt spray resistance: 1000+ hours (ASTM B117)
Internal pitting resistance equivalent to AA3003
30% lower galvanic corrosion vs. Zn-coated cores
Technical Specifications
| Parameter | Specification |
|---|---|
| Core Alloy | AA3003-H24 (AlMn1Cu) |
| Cladding Alloy | AA4343 (AlSi7.5) |
| Thickness x Width | 0.80mm ±0.03mm x 1250mm +2/-0mm |
| Tensile Strength | 140-180 MPa (20-26 ksi) |
| Yield Strength | ≥125 MPa (18 ksi) |
| Cladding Thickness | 80μm ±5μm (total both sides) |
| Surface Finish | Mill finish (STD) / Chromated (OPT) |
| Certifications | ASTM B209, EN 508, JIS H4080 |
Brazing Performance Data
| Test Condition | Result | Standard |
|---|---|---|
| 600°C / 5 min dwell | 0.2mm/m deflection max | AMS 2682 |
| Thermal Cycling (-40°C/120°C) | No joint degradation | SAE J2566 |
| Post-Braze Tensile Strength | 95% retention vs. parent | ISO 6892-1 |
| Filler Metal Spread | 100% coverage | AWS C3.7 |
Application-Specific Benefits
Off-Highway Radiators
Sustains 50g vibration loads (ISO 19453)
Compatible with NOCOLOK flux brazing
Power Generator Cores
Thermal shock resistance (600°C→25°C in <60s)
15% higher heat transfer vs. monolithic cores
Hydraulic Oil Coolers
Withstands phosphate ester fluids (MIL-PRF-23699)
Zero intergranular corrosion at brazed joints
Construction Equipment
20% weight reduction vs. copper-brass systems
Corrosion protection in pH 3-11 environments
Competitive Comparison
| Property | 4343/3003 Clad | Monolithic 3003 | Composite Tubes |
|---|---|---|---|
| 600°C Flatness | <0.3mm/m | >2.0mm/m | 0.5mm/m |
| Brazing Yield | 99.5% | 85% | 92% |
| Corrosion Resistance | ★★★★★ | ★★★☆☆ | ★★★★☆ |
| Material Cost | $8.5-10.5/kg | $6.0-7.5/kg | $12-15/kg |
| Service Life | 12+ years | 5-7 years | 10 years |
Brazing Process Guidelines
Furnace Parameters:
Ramp rate: ≤10°C/min below 300°C
Dwell: 3-5 min @ 600±5°C (N2 atmosphere)
Cladding Protection:
Max storage: 90 days before brazing
Degrease with ethanol (no alkaline cleaners)
Tooling Design:
Support spacing ≤150mm during brazing
Fixture CTE match: 23.5 μm/m·°C
Quality Assurance
Mill Certification: EN 10204 3.1 with chemical/microstructural report
Dimensional Controls:
Thickness tolerance: ±0.03mm
Camber: ≤1mm/3m coil length
Testing Protocol:
Ultrasonic cladding ratio verification (100% coverage)
Metallographic cross-sections (per ASTM E3)
Brazing simulation samples per batch
Transform Radiator Manufacturing - Specify 4343/3003 Clad Aluminum Coil for:
Zero Core Collapse in CAB Furnaces
40% Faster Brazing Cycles
Leak-Free Joint Formation
10-Year Corrosion Warranty
Technical Support
Our metallurgical team provides:
Custom brazing profile development
Finite element analysis for sag prediction
Microstructural failure investigation
Coil slitting optimization (max 0.1mm edge burr)
Certification Highlights:
ASME BPVC Section II Material Approval
PED 2014/68/EU Compliance
ISO 9001:2015 Quality System
1. who are we?
We are based in Liaoning, China, start from 2015,sell to Western Europe(25.00%),Mid East(20.00%),Eastern Europe(6.00%),Central America(6.00%),South America(5.00%),Southeast Asia(5.00%),Africa(5.00%),Oceania(5.00%),South Asia(5.00%),Domestic Market(5.00%),Eastern Asia(4.00%),Northern Europe(4.00%),Southern Europe(3.00%),North America(2.00%). There are total about 11-50 people in our office.
2. how can we guarantee quality?
Always a pre-production sample before mass production;
Always final Inspection before shipment;
3.what can you buy from us?
Prepainted coil / sheet;Galvanized steel coil / sheet; Galvalume steel coil / sheet; Cold rolled steel coil / sheet.
4. why should you buy from us not from other suppliers?
The professional steel supplier in China.
5. what services can we provide?
Accepted Delivery Terms: FOB,CIF;
Accepted Payment Currency:USD,EUR,CNY;
Accepted Payment Type: T/T,L/C;
Language Spoken:English,Chinese,Japanese,Arabic,French,Russian;
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