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Industrial Solder Wire Manufacturer & Technical Specification

Engineered for Precision Electronics
Designed for high-volume PCB production, wiring harnesses, appliance manufacturing, automotive electronics, and industrial maintenance. Every spool is drawn from 99.9% high-purity virgin raw materials under strict process control to ensure stable melting behavior, smooth wire feeding, and robust joint formation.

Certified under ISO 9001 and IATF 16949 quality management systems for complete traceability. Fully compliant with RoHS, REACH, and IPC-J-STD-004B standards.

Industrial Grade Solid Solder Wire
Industrial-grade solder wire engineered for automated and manual electronics manufacturing, PCB assembly, and high-volume electrical production. Manufactured with tight alloy composition control and
Ultra High Purity Solid Solder Wire
Ultra High Purity Solid Solder Wire is manufactured from primary-grade raw materials using strict metallurgical control to meet the rigorous demands of advanced electronics and semiconductor
Lead Free Solid Solder Wire
Lead-Free Solid Solder Wire is a coreless soldering material formulated from primary tin grades (Sn >= 99.9%) with controlled trace element limits, designed for electronic assembly, electrical
SAC305 Solid Solder Wire
SAC305 Solid Solder Wire is an industry-standard lead-free alloy precision-formulated with 96.5% tin (Sn), 3.0% silver (Ag), and 0.5% copper (Cu). Engineered for uncompromising precision and
Sn60/Pb40 Solid Solder Wire
Formulated with 60% virgin tin and 40% lead, this solid core (non-flux-cored) solder wire is engineered for precision electronic assembly and industrial metal joining. Manufactured through
Sn63/Pb37 Solid Solder Wire
Sn63/Pb37 Solid Solder Wire is a precision-manufactured eutectic tin-lead alloy designed for electronic assembly, cable termination, and industrial repair. Comprising 63% tin (Sn) and 37% lead (Pb),
Water Soluble Flux Core Solder Wire
Water-soluble flux core solder wire is engineered for electronics assembly operations that require fast, reliable soldering combined with efficient post-solder residue removal.
No-Clean Flux Core Solder Wire
No-Clean Flux Core Solder Wire is engineered for high-efficiency electronics assembly, PCB manufacturing, and electrical wiring where post-solder cleaning is either restricted or unnecessary.
Lead Free Flux Core Solder Wire
Engineered for electronics manufacturers, component distributors, and industrial repair operations, our lead-free flux core solder wire delivers reliable joint formation without lead content.
SAC305 Flux Core Solder Wire
Our SAC305 solder wire uses virgin raw materials (Sn purity >= 99.99%) to strictly maintain the standard 96.5% Tin, 3.0% Silver, and 0.5% Copper ratio.
Sn60/Pb40 Flux Core Solder Wire
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
Sn63/Pb37 Flux Core Solder Wire
Sn63/Pb37 flux core solder wire is a high-purity eutectic alloy composed of 63% tin (Sn) and 37% lead (Pb). Engineered for high-reliability electronics manufacturing, PCB rework, and industrial

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Key Performance Characteristics

Compositional Stability: Alloy ratios are maintained within tight tolerances through precise smelting, ensuring predictable melting points (Tm) and mechanical strength across continuous production batches.

Rapid Wetting Performance: Formulated to spread quickly across copper pads and oxidized component leads, forming stable intermetallic bonding layers without requiring prolonged thermal exposure.

Controlled Flux Distribution: Chemically balanced cores effectively remove surface oxides while leaving a stable protective residue. Available in Rosin (ROL0/ROM1), No-Clean (ROL0/REL0), and Water-Clean / Water-Soluble (ORH1) systems.

Low Spatter Formulation: Optimized core construction minimizes flux micro-explosions during rapid heating, keeping PCB assemblies clean and reducing post-solder inspection time.

Dimensional Tolerance: Monitored continuously via inline laser micrometers to ensure strict wire diameter consistency, preventing feeding jams in manual irons and automated wire-feeding systems.

Product Specifications

Parameter	Specification Details
Alloy Types	SAC305 (Sn96.5Ag3.0Cu0.5), Sn99.3Cu0.7, Sn63Pb37, Sn60Pb40, Custom formulations
Wire Diameters	0.3 mm, 0.5 mm, 0.6 mm, 0.8 mm, 1.0 mm, 1.2 mm, 1.6 mm, up to 3.0 mm
Flux Content	1.0% to 3.5% (customizable per process requirement)
Flux Classifications	Rosin Core, No-Clean, Water-Soluble, Halide-Free, Low Residue
Spool Weights	100 g, 250 g, 500 g, 1 kg, Industrial bulk packs
Surface Finish	Bright, oxidation-free metallic finish
Shelf Life	12–24 months under standard dry storage conditions

Manufacturing & Quality Control

Production Workflow

Raw Material Inflow -> High-Frequency Melting -> Vacuum Degassing -> Multi-Pass Wire Drawing -> Precision Flux Injection -> Laser Diameter Calibration -> Automatic Spool Winding -> Hermetic Vacuum Packaging -> Outgoing Inspection

Batch Testing Parameters

Every production lot undergoes rigorous laboratory verification prior to shipment:

Inductively Coupled Plasma (ICP) elemental purity testing for alloy composition.
Laser tolerance verification for diameter consistency and ovality.
Spread factor and wetting balance testing.
Halide content and Surface Insulation Resistance (SIR) testing for flux residues.
Tensile strength and spool winding uniformity checks.

Application Fields

PCB Assembly

Surface Mount Technology (SMT) rework, through-hole wave soldering, and general circuit board manufacturing.

Automotive Electronics

Electronic Control Units (ECUs), under-hood wiring harnesses, and sensitive sensor nodes.

Consumer Electronics

Mobile communications devices, computing hardware, and household appliances.

Electrical Equipment

Industrial circuit breakers, relays, switches, and power distribution units.

Customization & OEM Solutions

We support direct factory customization for industrial buyers, EMS providers, and global distributors:

Alloy & Flux Customization

Tailored melting profiles and specialized flux activity levels.

Packaging & Branding

Private label spools, custom carton printing, barcode labeling, and moisture-barrier vacuum packaging.

FAQ

Q: What solder alloys do you manufacture?

A: We manufacture lead-free alloys such as SAC305 and Sn99.3Cu0.7, traditional tin-lead alloys including Sn63Pb37 and Sn60Pb40, as well as customized alloy formulations based on customer requirements.

Q: Can you produce solder wire with different flux contents?

A: Yes. Flux content can be customized to suit different soldering processes, typically ranging from 1.0% to 3.5%.

Q: Which flux type should I choose?

A: Rosin Core: Widely used for general electronics.
No-Clean Flux: Suitable where residue cleaning is not preferred.
Water-Soluble Flux: Commonly selected for high-reliability applications requiring thorough post-solder cleaning.

Q: Do you support OEM branding?

A: Yes. We provide private label manufacturing, customized spool labels, retail packaging, export cartons, and complete OEM packaging solutions.

Q: What wire diameters are available?

A: Standard diameters range from 0.3 mm to 3.0 mm, with custom sizes available for specific production requirements.

We're well-known as one of the leading solder wire manufacturers and suppliers in China. Please feel free to buy or wholesale bulk high quality solder wire for sale here from our factory. Good service and competitive price are available.