Industrial Grade Sn60/Pb40 Flux Core Solder Wire
Direct Factory Supply | Bulk Wholesale & Custom OEM/ODM Services
Technical Specifications & Alloy Characteristics
Engineered for high-performance electronics manufacturing, PCB assembly, and industrial repair with over 10 years of specialized manufacturing experience, our Sn60/Pb40 flux core solder wire is manufactured with a strict, certified 60% Tin (Sn) and 40% Lead (Pb) alloy ratio. It delivers reliable mechanical strength and stable electrical conductivity for demanding production environments, having successfully served global distributors and industrial clients across 30+ countries.
Physical Properties & Performance
Solidus Temperature: 183C
Liquidus Temperature: 190C
Melting Behavior: The narrow 7C melting range allows the alloy to transition rapidly from solid to liquid, minimizing the risk of cold solder joints and making it easier for operators to control manual or automated soldering processes.
Wetting Performance: Spreads evenly across copper pads, PCB terminals, component leads, and connector pins, preventing weak electrical connections and reducing rework rates.
Wire Diameters & Recommended Applications
Precision manufacturing ensures consistent wire diameter, roundness, and surface quality, preventing feeding interruptions during automated or manual soldering.
|
Diameter |
Typical Applications |
|
0.3mm – 0.5mm |
Precision electronics, fine-pitch PCB repair, micro-components |
|
0.6mm – 0.8mm |
General electronics assembly, standard circuit boards |
|
1.0mm – 1.2mm |
Larger terminals, heavy-duty electrical connections, industrial soldering |
Integrated Flux Options & Selection Guide
The internal flux core (controlled at 2.0% +/- 0.5% standard content) melts prior to the solder alloy, removing surface oxides to improve adhesion and solder flow.
RMA (Rosin Mildly Activated): Recommended for standard PCB assembly and precision electronics where mild activity and reliable joint formation are required.
No-Clean: Recommended for high-efficiency production lines and repair work where post-solder cleaning is difficult. Leaves minimal, non-conductive residue.
RA (Rosin Activated): Recommended for industrial soldering and slightly oxidized metal surfaces that require strong oxide removal properties.
Custom Formulations: Tailored flux percentages and specific halide contents available upon request.
Quality Control & International Compliance
To guarantee batch-to-batch consistency for global distributors and industrial buyers, every production run undergoes multi-stage verification:
Chemical composition is verified via advanced spectrometer equipment to maintain strict compliance with the Sn60/Pb40 ratio.
Continuous monitoring of wire diameter tolerance, surface smoothness, and winding uniformity to eliminate feeding jams.
Tested for continuous distribution along the core, activity level, and residue characteristics.
Manufactured under strict ISO 9001 quality management systems, meeting standard international reliability benchmarks.
OEM Packaging & Global Supply Chain Support
Spool Options
100g, 250g, 500g, and 1kg plastic spools, plus industrial bulk packaging.
Customization
Full OEM and private label services are available for global distributors, including custom core ratios, specific flux types, and branded packaging.
Logistics & Export
Stable monthly production capacity, secure export packaging, and flexible shipping terms (FOB, CIF, DDP available).
FAQ
Q: What is Sn60/Pb40 solder wire used for?
A: Sn60/Pb40 Flux Core Solder Wire is mainly used for electronics assembly, PCB soldering, component repair, industrial maintenance, and electrical connections where tin-lead solder is required.
Q: What is the melting temperature of Sn60/Pb40 solder wire?
A: Sn60/Pb40 solder melts at approximately 183C to 190C, providing a relatively narrow melting range for stable soldering control.
Q: What is the difference between Sn60/Pb40 and Sn63/Pb37 solder wire?
A: Sn60/Pb40 melts within a small temperature range (183-190C).
Sn63/Pb37 is a eutectic alloy with a single melting point of approximately 183C.
Both are widely used in professional electronics soldering applications.
Q: Is Sn60/Pb40 Flux Core Solder Wire suitable for PCB assembly?
A: Yes. Sn60/Pb40 solder wire is commonly used for PCB assembly, repair, and rework applications because of its excellent wetting performance and reliable solder joint formation.
Q: What flux types are available for customization?
A: We supply RMA, RA, No-clean flux, and customized flux formulations. The best choice depends on your specific soldering temperature, surface condition, and cleaning requirements.
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